Fixed a garage remote by breaking it
$begingroup$
I have a garage remote that stopped working. I changed battery and it worked again, but only for a few days.
I measured the resistance between the poles of the battery terminals and it was about 760ohms. My assumption is that it should be much greater (ideally infinite). So I noticed that what it seemed to be a capacitor (a surface mounted spec, with a yellowish band) and it had exactly the same resistance, so I thought that either that was not a capacitor or it had failed (because the resistance should be also zero).
To complete the picture that capacitor was just after the battery terminals). I decided to remove it.
The end result is that the remote keeps working and resistance between battery terminals is now off the scale. Hopefully it will not discharge as fast.
What was the purpose of that capacitor? (If it was a capacitor in the first place)
capacitor circuit-analysis antenna decoupling-capacitor remote-control
asked 3 hours ago
gurghetgurghet
13216
$endgroup$
|
show 1 more comment
$begingroup$
I have a garage remote that stopped working. I changed battery and it worked again, but only for a few days.
I measured the resistance between the poles of the battery terminals and it was about 760ohms. My assumption is that it should be much greater (ideally infinite). So I noticed that what it seemed to be a capacitor (a surface mounted spec, with a yellowish band) and it had exactly the same resistance, so I thought that either that was not a capacitor or it had failed (because the resistance should be also zero).
To complete the picture that capacitor was just after the battery terminals). I decided to remove it.
The end result is that the remote keeps working and resistance between battery terminals is now off the scale. Hopefully it will not discharge as fast.
What was the purpose of that capacitor? (If it was a capacitor in the first place)
capacitor circuit-analysis antenna decoupling-capacitor remote-control
asked 3 hours ago
gurghetgurghet
13216
$endgroup$
$begingroup$
why downvoter why?
$endgroup$
– gurghet
3 hours ago
4
$begingroup$
Repair questions are off-topic. Without a schematic, impossible to answer. You ask about a component and you're not even sure what type of component it is. How are we supposed to provide a proper answer then?
$endgroup$
– Bimpelrekkie
3 hours ago
$begingroup$
You would be well-advised to read the FAQ's available before posting.
$endgroup$
– Solar Mike
3 hours ago
1
$begingroup$
Well this is not the first time I see a capacitor between battery terminals so I assume it's well known what they do. Also it's not a repair question I do not ask how to repair stuff.
$endgroup$
– gurghet
3 hours ago
$begingroup$
@SolarMike I always read the FAQ I just like to give a little context to my questions.
$endgroup$
– gurghet
3 hours ago
|
show 1 more comment
$begingroup$
I have a garage remote that stopped working. I changed battery and it worked again, but only for a few days.
I measured the resistance between the poles of the battery terminals and it was about 760ohms. My assumption is that it should be much greater (ideally infinite). So I noticed that what it seemed to be a capacitor (a surface mounted spec, with a yellowish band) and it had exactly the same resistance, so I thought that either that was not a capacitor or it had failed (because the resistance should be also zero).
To complete the picture that capacitor was just after the battery terminals). I decided to remove it.
The end result is that the remote keeps working and resistance between battery terminals is now off the scale. Hopefully it will not discharge as fast.
What was the purpose of that capacitor? (If it was a capacitor in the first place)
capacitor circuit-analysis antenna decoupling-capacitor remote-control
asked 3 hours ago
gurghetgurghet
13216
$endgroup$
I have a garage remote that stopped working. I changed battery and it worked again, but only for a few days.
I measured the resistance between the poles of the battery terminals and it was about 760ohms. My assumption is that it should be much greater (ideally infinite). So I noticed that what it seemed to be a capacitor (a surface mounted spec, with a yellowish band) and it had exactly the same resistance, so I thought that either that was not a capacitor or it had failed (because the resistance should be also zero).
To complete the picture that capacitor was just after the battery terminals). I decided to remove it.
The end result is that the remote keeps working and resistance between battery terminals is now off the scale. Hopefully it will not discharge as fast.
What was the purpose of that capacitor? (If it was a capacitor in the first place)
capacitor circuit-analysis antenna decoupling-capacitor remote-control
capacitor circuit-analysis antenna decoupling-capacitor remote-control
asked 3 hours ago
gurghetgurghet
13216
asked 3 hours ago
gurghetgurghet
13216
asked 3 hours ago
gurghetgurghet
13216
asked 3 hours ago
gurghetgurghet
13216
asked 3 hours ago
gurghetgurghet
13216
13216
$begingroup$
why downvoter why?
$endgroup$
– gurghet
3 hours ago
4
$begingroup$
Repair questions are off-topic. Without a schematic, impossible to answer. You ask about a component and you're not even sure what type of component it is. How are we supposed to provide a proper answer then?
$endgroup$
– Bimpelrekkie
3 hours ago
$begingroup$
You would be well-advised to read the FAQ's available before posting.
$endgroup$
– Solar Mike
3 hours ago
1
$begingroup$
Well this is not the first time I see a capacitor between battery terminals so I assume it's well known what they do. Also it's not a repair question I do not ask how to repair stuff.
$endgroup$
– gurghet
3 hours ago
$begingroup$
@SolarMike I always read the FAQ I just like to give a little context to my questions.
$endgroup$
– gurghet
3 hours ago
|
show 1 more comment
$begingroup$
why downvoter why?
$endgroup$
– gurghet
3 hours ago
4
$begingroup$
Repair questions are off-topic. Without a schematic, impossible to answer. You ask about a component and you're not even sure what type of component it is. How are we supposed to provide a proper answer then?
$endgroup$
– Bimpelrekkie
3 hours ago
$begingroup$
You would be well-advised to read the FAQ's available before posting.
$endgroup$
– Solar Mike
3 hours ago
1
$begingroup$
Well this is not the first time I see a capacitor between battery terminals so I assume it's well known what they do. Also it's not a repair question I do not ask how to repair stuff.
$endgroup$
– gurghet
3 hours ago
$begingroup$
@SolarMike I always read the FAQ I just like to give a little context to my questions.
$endgroup$
– gurghet
3 hours ago
$begingroup$
why downvoter why?
$endgroup$
– gurghet
3 hours ago
$begingroup$
why downvoter why?
$endgroup$
– gurghet
3 hours ago
4
4
$begingroup$
Repair questions are off-topic. Without a schematic, impossible to answer. You ask about a component and you're not even sure what type of component it is. How are we supposed to provide a proper answer then?
$endgroup$
– Bimpelrekkie
3 hours ago
$begingroup$
Repair questions are off-topic. Without a schematic, impossible to answer. You ask about a component and you're not even sure what type of component it is. How are we supposed to provide a proper answer then?
$endgroup$
– Bimpelrekkie
3 hours ago
$begingroup$
You would be well-advised to read the FAQ's available before posting.
$endgroup$
– Solar Mike
3 hours ago
$begingroup$
You would be well-advised to read the FAQ's available before posting.
$endgroup$
– Solar Mike
3 hours ago
1
1
$begingroup$
Well this is not the first time I see a capacitor between battery terminals so I assume it's well known what they do. Also it's not a repair question I do not ask how to repair stuff.
$endgroup$
– gurghet
3 hours ago
$begingroup$
Well this is not the first time I see a capacitor between battery terminals so I assume it's well known what they do. Also it's not a repair question I do not ask how to repair stuff.
$endgroup$
– gurghet
3 hours ago
$begingroup$
@SolarMike I always read the FAQ I just like to give a little context to my questions.
$endgroup$
– gurghet
3 hours ago
$begingroup$
@SolarMike I always read the FAQ I just like to give a little context to my questions.
$endgroup$
– gurghet
3 hours ago
|
show 1 more comment
2 Answers
2
active
oldest
votes
$begingroup$
It's a reservoir capacitor, the lithium button cells used in remote control have a high internal resistance, the capacitor (if intact) has a low internal resistance and can supply surges of current. this the remote to operate transmit stronger signals than without it.
I recommend replacing the broken capacitor with a new capacitor 10uF is probably about right.
answered 2 hours ago
JasenJasen
10.2k1428
$endgroup$
$begingroup$
This is probably more correct
$endgroup$
– gurghet
1 hour ago
add a comment |
$begingroup$
this could be radio frequency suppressor capacitor to avoid radio interference to other sensitive gadgets nearby.
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
1
$begingroup$
This is more of a comment than an answer. I know that you, as a new user, can't post comments to questions yet – but you will be able to, in short time. Ask a few good questions, write a few answers (which actually are answers, not just comments), and you'll easily have the points necessary.
$endgroup$
– Marcus Müller
3 hours ago
$begingroup$
your answer is correct!
$endgroup$
– gurghet
3 hours ago
$begingroup$
@gurghet how do you know its correct? I was just about to write a very different answer.
$endgroup$
– Steve G
3 hours ago
$begingroup$
@SteveG similar to Jasen's?
$endgroup$
– gurghet
1 hour ago
$begingroup$
Yes. The internal resistance increases as the battery ages so the associated problems get worse. Your new battery will have a low internal resistance and so appears to work, but without the capacitor it may stop working prematurely. Replace the cap and you should be Ok.
$endgroup$
– Steve G
1 hour ago
add a comment |
Your Answer
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
$begingroup$
It's a reservoir capacitor, the lithium button cells used in remote control have a high internal resistance, the capacitor (if intact) has a low internal resistance and can supply surges of current. this the remote to operate transmit stronger signals than without it.
I recommend replacing the broken capacitor with a new capacitor 10uF is probably about right.
answered 2 hours ago
JasenJasen
10.2k1428
$endgroup$
$begingroup$
This is probably more correct
$endgroup$
– gurghet
1 hour ago
add a comment |
$begingroup$
It's a reservoir capacitor, the lithium button cells used in remote control have a high internal resistance, the capacitor (if intact) has a low internal resistance and can supply surges of current. this the remote to operate transmit stronger signals than without it.
I recommend replacing the broken capacitor with a new capacitor 10uF is probably about right.
answered 2 hours ago
JasenJasen
10.2k1428
$endgroup$
$begingroup$
This is probably more correct
$endgroup$
– gurghet
1 hour ago
add a comment |
$begingroup$
It's a reservoir capacitor, the lithium button cells used in remote control have a high internal resistance, the capacitor (if intact) has a low internal resistance and can supply surges of current. this the remote to operate transmit stronger signals than without it.
I recommend replacing the broken capacitor with a new capacitor 10uF is probably about right.
answered 2 hours ago
JasenJasen
10.2k1428
$endgroup$
It's a reservoir capacitor, the lithium button cells used in remote control have a high internal resistance, the capacitor (if intact) has a low internal resistance and can supply surges of current. this the remote to operate transmit stronger signals than without it.
I recommend replacing the broken capacitor with a new capacitor 10uF is probably about right.
answered 2 hours ago
JasenJasen
10.2k1428
answered 2 hours ago
JasenJasen
10.2k1428
answered 2 hours ago
JasenJasen
10.2k1428
answered 2 hours ago
JasenJasen
10.2k1428
10.2k1428
$begingroup$
This is probably more correct
$endgroup$
– gurghet
1 hour ago
add a comment |
$begingroup$
This is probably more correct
$endgroup$
– gurghet
1 hour ago
$begingroup$
This is probably more correct
$endgroup$
– gurghet
1 hour ago
$begingroup$
This is probably more correct
$endgroup$
– gurghet
1 hour ago
add a comment |
$begingroup$
this could be radio frequency suppressor capacitor to avoid radio interference to other sensitive gadgets nearby.
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
1
$begingroup$
This is more of a comment than an answer. I know that you, as a new user, can't post comments to questions yet – but you will be able to, in short time. Ask a few good questions, write a few answers (which actually are answers, not just comments), and you'll easily have the points necessary.
$endgroup$
– Marcus Müller
3 hours ago
$begingroup$
your answer is correct!
$endgroup$
– gurghet
3 hours ago
$begingroup$
@gurghet how do you know its correct? I was just about to write a very different answer.
$endgroup$
– Steve G
3 hours ago
$begingroup$
@SteveG similar to Jasen's?
$endgroup$
– gurghet
1 hour ago
$begingroup$
Yes. The internal resistance increases as the battery ages so the associated problems get worse. Your new battery will have a low internal resistance and so appears to work, but without the capacitor it may stop working prematurely. Replace the cap and you should be Ok.
$endgroup$
– Steve G
1 hour ago
add a comment |
$begingroup$
this could be radio frequency suppressor capacitor to avoid radio interference to other sensitive gadgets nearby.
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
1
$begingroup$
This is more of a comment than an answer. I know that you, as a new user, can't post comments to questions yet – but you will be able to, in short time. Ask a few good questions, write a few answers (which actually are answers, not just comments), and you'll easily have the points necessary.
$endgroup$
– Marcus Müller
3 hours ago
$begingroup$
your answer is correct!
$endgroup$
– gurghet
3 hours ago
$begingroup$
@gurghet how do you know its correct? I was just about to write a very different answer.
$endgroup$
– Steve G
3 hours ago
$begingroup$
@SteveG similar to Jasen's?
$endgroup$
– gurghet
1 hour ago
$begingroup$
Yes. The internal resistance increases as the battery ages so the associated problems get worse. Your new battery will have a low internal resistance and so appears to work, but without the capacitor it may stop working prematurely. Replace the cap and you should be Ok.
$endgroup$
– Steve G
1 hour ago
add a comment |
$begingroup$
this could be radio frequency suppressor capacitor to avoid radio interference to other sensitive gadgets nearby.
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
$endgroup$
this could be radio frequency suppressor capacitor to avoid radio interference to other sensitive gadgets nearby.
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
answered 3 hours ago
Avadhoot GaikwadAvadhoot Gaikwad
111
111
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Avadhoot Gaikwad is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
1
$begingroup$
This is more of a comment than an answer. I know that you, as a new user, can't post comments to questions yet – but you will be able to, in short time. Ask a few good questions, write a few answers (which actually are answers, not just comments), and you'll easily have the points necessary.
$endgroup$
– Marcus Müller
3 hours ago
$begingroup$
your answer is correct!
$endgroup$
– gurghet
3 hours ago
$begingroup$
@gurghet how do you know its correct? I was just about to write a very different answer.
$endgroup$
– Steve G
3 hours ago
$begingroup$
@SteveG similar to Jasen's?
$endgroup$
– gurghet
1 hour ago
$begingroup$
Yes. The internal resistance increases as the battery ages so the associated problems get worse. Your new battery will have a low internal resistance and so appears to work, but without the capacitor it may stop working prematurely. Replace the cap and you should be Ok.
$endgroup$
– Steve G
1 hour ago
add a comment |
1
$begingroup$
This is more of a comment than an answer. I know that you, as a new user, can't post comments to questions yet – but you will be able to, in short time. Ask a few good questions, write a few answers (which actually are answers, not just comments), and you'll easily have the points necessary.
$endgroup$
– Marcus Müller
3 hours ago
$begingroup$
your answer is correct!
$endgroup$
– gurghet
3 hours ago
$begingroup$
@gurghet how do you know its correct? I was just about to write a very different answer.
$endgroup$
– Steve G
3 hours ago
$begingroup$
@SteveG similar to Jasen's?
$endgroup$
– gurghet
1 hour ago
$begingroup$
Yes. The internal resistance increases as the battery ages so the associated problems get worse. Your new battery will have a low internal resistance and so appears to work, but without the capacitor it may stop working prematurely. Replace the cap and you should be Ok.
$endgroup$
– Steve G
1 hour ago
1
1
$begingroup$
This is more of a comment than an answer. I know that you, as a new user, can't post comments to questions yet – but you will be able to, in short time. Ask a few good questions, write a few answers (which actually are answers, not just comments), and you'll easily have the points necessary.
$endgroup$
– Marcus Müller
3 hours ago
$begingroup$
This is more of a comment than an answer. I know that you, as a new user, can't post comments to questions yet – but you will be able to, in short time. Ask a few good questions, write a few answers (which actually are answers, not just comments), and you'll easily have the points necessary.
$endgroup$
– Marcus Müller
3 hours ago
$begingroup$
your answer is correct!
$endgroup$
– gurghet
3 hours ago
$begingroup$
your answer is correct!
$endgroup$
– gurghet
3 hours ago
$begingroup$
@gurghet how do you know its correct? I was just about to write a very different answer.
$endgroup$
– Steve G
3 hours ago
$begingroup$
@gurghet how do you know its correct? I was just about to write a very different answer.
$endgroup$
– Steve G
3 hours ago
$begingroup$
@SteveG similar to Jasen's?
$endgroup$
– gurghet
1 hour ago
$begingroup$
@SteveG similar to Jasen's?
$endgroup$
– gurghet
1 hour ago
$begingroup$
Yes. The internal resistance increases as the battery ages so the associated problems get worse. Your new battery will have a low internal resistance and so appears to work, but without the capacitor it may stop working prematurely. Replace the cap and you should be Ok.
$endgroup$
– Steve G
1 hour ago
$begingroup$
Yes. The internal resistance increases as the battery ages so the associated problems get worse. Your new battery will have a low internal resistance and so appears to work, but without the capacitor it may stop working prematurely. Replace the cap and you should be Ok.
$endgroup$
– Steve G
1 hour ago
add a comment |
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$begingroup$
why downvoter why?
$endgroup$
– gurghet
3 hours ago
4
$begingroup$
Repair questions are off-topic. Without a schematic, impossible to answer. You ask about a component and you're not even sure what type of component it is. How are we supposed to provide a proper answer then?
$endgroup$
– Bimpelrekkie
3 hours ago
$begingroup$
You would be well-advised to read the FAQ's available before posting.
$endgroup$
– Solar Mike
3 hours ago
1
$begingroup$
Well this is not the first time I see a capacitor between battery terminals so I assume it's well known what they do. Also it's not a repair question I do not ask how to repair stuff.
$endgroup$
– gurghet
3 hours ago
$begingroup$
@SolarMike I always read the FAQ I just like to give a little context to my questions.
$endgroup$
– gurghet
3 hours ago