How long can equipment go unused before powering up runs the risk of damage? Announcing the arrival of Valued Associate #679: Cesar Manara Planned maintenance scheduled April 23, 2019 at 23:30UTC (7:30pm US/Eastern)Can the noise of any switching PSU be attenuated if I put linear regulator before the output?What can cause this damage to the GPU?How long can a capacitor stay charged?Reduction of DC motor noiseHow do the NEC Article 460 requirements apply to small capacitors mounted outside of equipment?how the capacitor equation can be modified?Given specific equipment wattage, and the capacity of an industrial grade portable battery, how can I determine theoretical run time?How can removing a piezoelectric speaker/buzzer damage a circuit?Can parallel addition of a bigger capacitor damage the smaller one?Protecting a coin cell from high current spikes - using a capacitor or not?
How to compare two different files line by line in unix?
Has negative voting ever been officially implemented in elections, or seriously proposed, or even studied?
What would you call this weird metallic apparatus that allows you to lift people?
How does the math work when buying airline miles?
AppleTVs create a chatty alternate WiFi network
What does this say in Elvish?
Flash light on something
Induction Proof for Sequences
Significance of Cersei's obsession with elephants?
How often does castling occur in grandmaster games?
What does Turing mean by this statement?
What makes a man succeed?
How do living politicians protect their readily obtainable signatures from misuse?
Is there hard evidence that the grant peer review system performs significantly better than random?
Random body shuffle every night—can we still function?
How did Fremen produce and carry enough thumpers to use Sandworms as de facto Ubers?
Why weren't discrete x86 CPUs ever used in game hardware?
Why does it sometimes sound good to play a grace note as a lead in to a note in a melody?
Dyck paths with extra diagonals from valleys (Laser construction)
Co-worker has annoying ringtone
Why are my pictures showing a dark band on one edge?
What to do with repeated rejections for phd position
How can I prevent/balance waiting and turtling as a response to cooldown mechanics
How long can equipment go unused before powering up runs the risk of damage?
How long can equipment go unused before powering up runs the risk of damage?
Announcing the arrival of Valued Associate #679: Cesar Manara
Planned maintenance scheduled April 23, 2019 at 23:30UTC (7:30pm US/Eastern)Can the noise of any switching PSU be attenuated if I put linear regulator before the output?What can cause this damage to the GPU?How long can a capacitor stay charged?Reduction of DC motor noiseHow do the NEC Article 460 requirements apply to small capacitors mounted outside of equipment?how the capacitor equation can be modified?Given specific equipment wattage, and the capacity of an industrial grade portable battery, how can I determine theoretical run time?How can removing a piezoelectric speaker/buzzer damage a circuit?Can parallel addition of a bigger capacitor damage the smaller one?Protecting a coin cell from high current spikes - using a capacitor or not?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
$begingroup$
I have an older solid state radio transceiver I want to power up but I understand that electrolytic capacitors loose their function after a long time of non-use. There are articles about reforming electrolytics, but not much is said about how long electrolytics can be unpowered before precautions need to be take on powering up again.
The equipment is non-critical, no tubes, linear power supply. It is a TenTec Argosy II amateur radio transceiver. I can replace the caps if I need to. (And, yes, I am licensed to use the radio. KD4TTC)
power-supply capacitor damage
asked 4 hours ago
kd4ttckd4ttc
1163
$endgroup$
add a comment |
$begingroup$
I have an older solid state radio transceiver I want to power up but I understand that electrolytic capacitors loose their function after a long time of non-use. There are articles about reforming electrolytics, but not much is said about how long electrolytics can be unpowered before precautions need to be take on powering up again.
The equipment is non-critical, no tubes, linear power supply. It is a TenTec Argosy II amateur radio transceiver. I can replace the caps if I need to. (And, yes, I am licensed to use the radio. KD4TTC)
power-supply capacitor damage
asked 4 hours ago
kd4ttckd4ttc
1163
$endgroup$
2
$begingroup$
Electrolytics can also dry out...reforming can't do anything about that.
$endgroup$
– Toor
4 hours ago
$begingroup$
You should probably seek input from other users of that model on an Amateur Radio forum. The question is not really on topic here, because it is about the usage/repair of a product for which you are not providing any design information.
$endgroup$
– Chris Stratton
2 hours ago
$begingroup$
@ChrisStratton hm, maybe the question of "would the proposed procedure actually help, and does it potentially have any downsides for devices from the mid-80ies" would be more on-topic?
$endgroup$
– Marcus Müller
2 hours ago
$begingroup$
@MarcusMüller - this kind of gear is designed to actually be maintained and has a technically aware user community. Consulting that expertise is much better than taking guesses from first principles.
$endgroup$
– Chris Stratton
2 hours ago
add a comment |
$begingroup$
I have an older solid state radio transceiver I want to power up but I understand that electrolytic capacitors loose their function after a long time of non-use. There are articles about reforming electrolytics, but not much is said about how long electrolytics can be unpowered before precautions need to be take on powering up again.
The equipment is non-critical, no tubes, linear power supply. It is a TenTec Argosy II amateur radio transceiver. I can replace the caps if I need to. (And, yes, I am licensed to use the radio. KD4TTC)
power-supply capacitor damage
asked 4 hours ago
kd4ttckd4ttc
1163
$endgroup$
I have an older solid state radio transceiver I want to power up but I understand that electrolytic capacitors loose their function after a long time of non-use. There are articles about reforming electrolytics, but not much is said about how long electrolytics can be unpowered before precautions need to be take on powering up again.
The equipment is non-critical, no tubes, linear power supply. It is a TenTec Argosy II amateur radio transceiver. I can replace the caps if I need to. (And, yes, I am licensed to use the radio. KD4TTC)
power-supply capacitor damage
power-supply capacitor damage
asked 4 hours ago
kd4ttckd4ttc
1163
asked 4 hours ago
kd4ttckd4ttc
1163
asked 4 hours ago
kd4ttckd4ttc
1163
asked 4 hours ago
kd4ttckd4ttc
1163
asked 4 hours ago
kd4ttckd4ttc
1163
1163
2
$begingroup$
Electrolytics can also dry out...reforming can't do anything about that.
$endgroup$
– Toor
4 hours ago
$begingroup$
You should probably seek input from other users of that model on an Amateur Radio forum. The question is not really on topic here, because it is about the usage/repair of a product for which you are not providing any design information.
$endgroup$
– Chris Stratton
2 hours ago
$begingroup$
@ChrisStratton hm, maybe the question of "would the proposed procedure actually help, and does it potentially have any downsides for devices from the mid-80ies" would be more on-topic?
$endgroup$
– Marcus Müller
2 hours ago
$begingroup$
@MarcusMüller - this kind of gear is designed to actually be maintained and has a technically aware user community. Consulting that expertise is much better than taking guesses from first principles.
$endgroup$
– Chris Stratton
2 hours ago
add a comment |
2
$begingroup$
Electrolytics can also dry out...reforming can't do anything about that.
$endgroup$
– Toor
4 hours ago
$begingroup$
You should probably seek input from other users of that model on an Amateur Radio forum. The question is not really on topic here, because it is about the usage/repair of a product for which you are not providing any design information.
$endgroup$
– Chris Stratton
2 hours ago
$begingroup$
@ChrisStratton hm, maybe the question of "would the proposed procedure actually help, and does it potentially have any downsides for devices from the mid-80ies" would be more on-topic?
$endgroup$
– Marcus Müller
2 hours ago
$begingroup$
@MarcusMüller - this kind of gear is designed to actually be maintained and has a technically aware user community. Consulting that expertise is much better than taking guesses from first principles.
$endgroup$
– Chris Stratton
2 hours ago
2
2
$begingroup$
Electrolytics can also dry out...reforming can't do anything about that.
$endgroup$
– Toor
4 hours ago
$begingroup$
Electrolytics can also dry out...reforming can't do anything about that.
$endgroup$
– Toor
4 hours ago
$begingroup$
You should probably seek input from other users of that model on an Amateur Radio forum. The question is not really on topic here, because it is about the usage/repair of a product for which you are not providing any design information.
$endgroup$
– Chris Stratton
2 hours ago
$begingroup$
You should probably seek input from other users of that model on an Amateur Radio forum. The question is not really on topic here, because it is about the usage/repair of a product for which you are not providing any design information.
$endgroup$
– Chris Stratton
2 hours ago
$begingroup$
@ChrisStratton hm, maybe the question of "would the proposed procedure actually help, and does it potentially have any downsides for devices from the mid-80ies" would be more on-topic?
$endgroup$
– Marcus Müller
2 hours ago
$begingroup$
@ChrisStratton hm, maybe the question of "would the proposed procedure actually help, and does it potentially have any downsides for devices from the mid-80ies" would be more on-topic?
$endgroup$
– Marcus Müller
2 hours ago
$begingroup$
@MarcusMüller - this kind of gear is designed to actually be maintained and has a technically aware user community. Consulting that expertise is much better than taking guesses from first principles.
$endgroup$
– Chris Stratton
2 hours ago
$begingroup$
@MarcusMüller - this kind of gear is designed to actually be maintained and has a technically aware user community. Consulting that expertise is much better than taking guesses from first principles.
$endgroup$
– Chris Stratton
2 hours ago
add a comment |
2 Answers
2
active
oldest
votes
$begingroup$
If your worried about it then get a capacitor ESR tester, deslolder a few from the board and test the values of the caps and make sure they match the markings on the package. Also test the ESR. If you can find a datasheet for the caps, then you might find nominal ESR values there or find an equivalent capacitor in that range. If the ESR values seem high then replace the caps.
If that can't be done then find the voltage of the circuit and unsolder a few and test them with a supply, if they are leaking a lot of current, then don't use them.
It's probably better to replace them anyway if there is a question, especially any caps that could have large currents flow through them.
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
$endgroup$
$begingroup$
I agree........+1
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
$begingroup$
This was an excellent transceiver. But it is so old that the service manual used MF for uF=μF and yet UH for uH=μH.
MF is these days means millifarads not microfarads as in this unit service manual.
The 100W Tx will have need of good low ESR e-caps on supply for low ripple if they need replacing.
Do not operate Tx without a dummy load or antenna.
- Get the service manual below. or email to them for service related questions.
Get a DMM to measure Vdc and Vac ripple on large caps where the ripple voltage must be << 1% of Vdc to be considered good. ( Dissipation Factor, DF at 120Hz in datasheets.)
http://www.tentec.com/wp-content/uploads/2016/05/Argosy_II_Model_525_Manualf933.pdf
Unfortunately the service manual omitted the power supply board which is the main concern for worn out e-caps after 10 to 20 yrs with low C and high ESR values.
- so you **want to wing it* by looking for signs of slight end-bulge and measurements or hum on Rx or Tx.
- If everything looks OK, power it up. The only potential damage can be from pressing Tx without a load.
a portable RLC meter is often a good investment to verify caps out of the circuit.
anecdotal: When my Sanyo receiver was 15 yrs old and had spurious noise, I found one bad electrolytic or e-cap then replaced all of similar size or bigger and discover a few more were also bad. so I ordered/replaced about a dozen of them. The cost of parts are cheap from Digikey and often less than the courier cost.
Cap conditioning.
At one time Computer grade 100k uF capacitors had high leakage currents which could be conditioned by a high series R to clear up the leakage currents. This unfortunately does nothing from failed caps that suffer from high Effective Series Resistance (ESR) and low Capacitance. As others have said. it wont help.
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
$endgroup$
1
$begingroup$
The trolls are back ( non-contributors = -2) and shall remain nameless.
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
Your Answer
StackExchange.ifUsing("editor", function ()
return StackExchange.using("schematics", function ()
StackExchange.schematics.init();
);
, "cicuitlab");
StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "135"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);
else
createEditor();
);
function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);
);
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f433492%2fhow-long-can-equipment-go-unused-before-powering-up-runs-the-risk-of-damage%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
If your worried about it then get a capacitor ESR tester, deslolder a few from the board and test the values of the caps and make sure they match the markings on the package. Also test the ESR. If you can find a datasheet for the caps, then you might find nominal ESR values there or find an equivalent capacitor in that range. If the ESR values seem high then replace the caps.
If that can't be done then find the voltage of the circuit and unsolder a few and test them with a supply, if they are leaking a lot of current, then don't use them.
It's probably better to replace them anyway if there is a question, especially any caps that could have large currents flow through them.
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
$endgroup$
$begingroup$
I agree........+1
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
$begingroup$
If your worried about it then get a capacitor ESR tester, deslolder a few from the board and test the values of the caps and make sure they match the markings on the package. Also test the ESR. If you can find a datasheet for the caps, then you might find nominal ESR values there or find an equivalent capacitor in that range. If the ESR values seem high then replace the caps.
If that can't be done then find the voltage of the circuit and unsolder a few and test them with a supply, if they are leaking a lot of current, then don't use them.
It's probably better to replace them anyway if there is a question, especially any caps that could have large currents flow through them.
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
$endgroup$
$begingroup$
I agree........+1
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
$begingroup$
If your worried about it then get a capacitor ESR tester, deslolder a few from the board and test the values of the caps and make sure they match the markings on the package. Also test the ESR. If you can find a datasheet for the caps, then you might find nominal ESR values there or find an equivalent capacitor in that range. If the ESR values seem high then replace the caps.
If that can't be done then find the voltage of the circuit and unsolder a few and test them with a supply, if they are leaking a lot of current, then don't use them.
It's probably better to replace them anyway if there is a question, especially any caps that could have large currents flow through them.
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
$endgroup$
If your worried about it then get a capacitor ESR tester, deslolder a few from the board and test the values of the caps and make sure they match the markings on the package. Also test the ESR. If you can find a datasheet for the caps, then you might find nominal ESR values there or find an equivalent capacitor in that range. If the ESR values seem high then replace the caps.
If that can't be done then find the voltage of the circuit and unsolder a few and test them with a supply, if they are leaking a lot of current, then don't use them.
It's probably better to replace them anyway if there is a question, especially any caps that could have large currents flow through them.
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
answered 2 hours ago
laptop2dlaptop2d
28.2k123786
28.2k123786
$begingroup$
I agree........+1
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
$begingroup$
I agree........+1
$endgroup$
– Sunnyskyguy EE75
1 hour ago
$begingroup$
I agree........+1
$endgroup$
– Sunnyskyguy EE75
1 hour ago
$begingroup$
I agree........+1
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
$begingroup$
This was an excellent transceiver. But it is so old that the service manual used MF for uF=μF and yet UH for uH=μH.
MF is these days means millifarads not microfarads as in this unit service manual.
The 100W Tx will have need of good low ESR e-caps on supply for low ripple if they need replacing.
Do not operate Tx without a dummy load or antenna.
- Get the service manual below. or email to them for service related questions.
Get a DMM to measure Vdc and Vac ripple on large caps where the ripple voltage must be << 1% of Vdc to be considered good. ( Dissipation Factor, DF at 120Hz in datasheets.)
http://www.tentec.com/wp-content/uploads/2016/05/Argosy_II_Model_525_Manualf933.pdf
Unfortunately the service manual omitted the power supply board which is the main concern for worn out e-caps after 10 to 20 yrs with low C and high ESR values.
- so you **want to wing it* by looking for signs of slight end-bulge and measurements or hum on Rx or Tx.
- If everything looks OK, power it up. The only potential damage can be from pressing Tx without a load.
a portable RLC meter is often a good investment to verify caps out of the circuit.
anecdotal: When my Sanyo receiver was 15 yrs old and had spurious noise, I found one bad electrolytic or e-cap then replaced all of similar size or bigger and discover a few more were also bad. so I ordered/replaced about a dozen of them. The cost of parts are cheap from Digikey and often less than the courier cost.
Cap conditioning.
At one time Computer grade 100k uF capacitors had high leakage currents which could be conditioned by a high series R to clear up the leakage currents. This unfortunately does nothing from failed caps that suffer from high Effective Series Resistance (ESR) and low Capacitance. As others have said. it wont help.
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
$endgroup$
1
$begingroup$
The trolls are back ( non-contributors = -2) and shall remain nameless.
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
$begingroup$
This was an excellent transceiver. But it is so old that the service manual used MF for uF=μF and yet UH for uH=μH.
MF is these days means millifarads not microfarads as in this unit service manual.
The 100W Tx will have need of good low ESR e-caps on supply for low ripple if they need replacing.
Do not operate Tx without a dummy load or antenna.
- Get the service manual below. or email to them for service related questions.
Get a DMM to measure Vdc and Vac ripple on large caps where the ripple voltage must be << 1% of Vdc to be considered good. ( Dissipation Factor, DF at 120Hz in datasheets.)
http://www.tentec.com/wp-content/uploads/2016/05/Argosy_II_Model_525_Manualf933.pdf
Unfortunately the service manual omitted the power supply board which is the main concern for worn out e-caps after 10 to 20 yrs with low C and high ESR values.
- so you **want to wing it* by looking for signs of slight end-bulge and measurements or hum on Rx or Tx.
- If everything looks OK, power it up. The only potential damage can be from pressing Tx without a load.
a portable RLC meter is often a good investment to verify caps out of the circuit.
anecdotal: When my Sanyo receiver was 15 yrs old and had spurious noise, I found one bad electrolytic or e-cap then replaced all of similar size or bigger and discover a few more were also bad. so I ordered/replaced about a dozen of them. The cost of parts are cheap from Digikey and often less than the courier cost.
Cap conditioning.
At one time Computer grade 100k uF capacitors had high leakage currents which could be conditioned by a high series R to clear up the leakage currents. This unfortunately does nothing from failed caps that suffer from high Effective Series Resistance (ESR) and low Capacitance. As others have said. it wont help.
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
$endgroup$
1
$begingroup$
The trolls are back ( non-contributors = -2) and shall remain nameless.
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
$begingroup$
This was an excellent transceiver. But it is so old that the service manual used MF for uF=μF and yet UH for uH=μH.
MF is these days means millifarads not microfarads as in this unit service manual.
The 100W Tx will have need of good low ESR e-caps on supply for low ripple if they need replacing.
Do not operate Tx without a dummy load or antenna.
- Get the service manual below. or email to them for service related questions.
Get a DMM to measure Vdc and Vac ripple on large caps where the ripple voltage must be << 1% of Vdc to be considered good. ( Dissipation Factor, DF at 120Hz in datasheets.)
http://www.tentec.com/wp-content/uploads/2016/05/Argosy_II_Model_525_Manualf933.pdf
Unfortunately the service manual omitted the power supply board which is the main concern for worn out e-caps after 10 to 20 yrs with low C and high ESR values.
- so you **want to wing it* by looking for signs of slight end-bulge and measurements or hum on Rx or Tx.
- If everything looks OK, power it up. The only potential damage can be from pressing Tx without a load.
a portable RLC meter is often a good investment to verify caps out of the circuit.
anecdotal: When my Sanyo receiver was 15 yrs old and had spurious noise, I found one bad electrolytic or e-cap then replaced all of similar size or bigger and discover a few more were also bad. so I ordered/replaced about a dozen of them. The cost of parts are cheap from Digikey and often less than the courier cost.
Cap conditioning.
At one time Computer grade 100k uF capacitors had high leakage currents which could be conditioned by a high series R to clear up the leakage currents. This unfortunately does nothing from failed caps that suffer from high Effective Series Resistance (ESR) and low Capacitance. As others have said. it wont help.
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
$endgroup$
This was an excellent transceiver. But it is so old that the service manual used MF for uF=μF and yet UH for uH=μH.
MF is these days means millifarads not microfarads as in this unit service manual.
The 100W Tx will have need of good low ESR e-caps on supply for low ripple if they need replacing.
Do not operate Tx without a dummy load or antenna.
- Get the service manual below. or email to them for service related questions.
Get a DMM to measure Vdc and Vac ripple on large caps where the ripple voltage must be << 1% of Vdc to be considered good. ( Dissipation Factor, DF at 120Hz in datasheets.)
http://www.tentec.com/wp-content/uploads/2016/05/Argosy_II_Model_525_Manualf933.pdf
Unfortunately the service manual omitted the power supply board which is the main concern for worn out e-caps after 10 to 20 yrs with low C and high ESR values.
- so you **want to wing it* by looking for signs of slight end-bulge and measurements or hum on Rx or Tx.
- If everything looks OK, power it up. The only potential damage can be from pressing Tx without a load.
a portable RLC meter is often a good investment to verify caps out of the circuit.
anecdotal: When my Sanyo receiver was 15 yrs old and had spurious noise, I found one bad electrolytic or e-cap then replaced all of similar size or bigger and discover a few more were also bad. so I ordered/replaced about a dozen of them. The cost of parts are cheap from Digikey and often less than the courier cost.
Cap conditioning.
At one time Computer grade 100k uF capacitors had high leakage currents which could be conditioned by a high series R to clear up the leakage currents. This unfortunately does nothing from failed caps that suffer from high Effective Series Resistance (ESR) and low Capacitance. As others have said. it wont help.
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
edited 1 hour ago
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
answered 2 hours ago
Sunnyskyguy EE75Sunnyskyguy EE75
72k227103
72k227103
1
$begingroup$
The trolls are back ( non-contributors = -2) and shall remain nameless.
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
1
$begingroup$
The trolls are back ( non-contributors = -2) and shall remain nameless.
$endgroup$
– Sunnyskyguy EE75
1 hour ago
1
1
$begingroup$
The trolls are back ( non-contributors = -2) and shall remain nameless.
$endgroup$
– Sunnyskyguy EE75
1 hour ago
$begingroup$
The trolls are back ( non-contributors = -2) and shall remain nameless.
$endgroup$
– Sunnyskyguy EE75
1 hour ago
add a comment |
Thanks for contributing an answer to Electrical Engineering Stack Exchange!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
Use MathJax to format equations. MathJax reference.
To learn more, see our tips on writing great answers.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2felectronics.stackexchange.com%2fquestions%2f433492%2fhow-long-can-equipment-go-unused-before-powering-up-runs-the-risk-of-damage%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
2
$begingroup$
Electrolytics can also dry out...reforming can't do anything about that.
$endgroup$
– Toor
4 hours ago
$begingroup$
You should probably seek input from other users of that model on an Amateur Radio forum. The question is not really on topic here, because it is about the usage/repair of a product for which you are not providing any design information.
$endgroup$
– Chris Stratton
2 hours ago
$begingroup$
@ChrisStratton hm, maybe the question of "would the proposed procedure actually help, and does it potentially have any downsides for devices from the mid-80ies" would be more on-topic?
$endgroup$
– Marcus Müller
2 hours ago
$begingroup$
@MarcusMüller - this kind of gear is designed to actually be maintained and has a technically aware user community. Consulting that expertise is much better than taking guesses from first principles.
$endgroup$
– Chris Stratton
2 hours ago