All Questions
19
questions
17
votes
4
answers
4k
views
I ripped the lead off this film capacitor by mistake - is it beyond repair?
As the title says, I accidentally ripped the lead off this film capacitor. It was the only one I had - am I out of luck, or can this be soldered back on? I've provided photos, including one under my ...
- 314
-1
votes
1
answer
135
views
Help identifying silver oval capacitor
[Edited to stay on topic]
My induction hob recently went 'pop'. I believe I have a blown capacitor. "C24" on the main board. It is showing subtle 'bubbling' at the end.
My issue is that I ...
- 1
0
votes
0
answers
227
views
Scratched capacitors at the top. Should I care?
I've ordered a couple of big capacitors and one of them (the one on the right) seems to have been repeatedly hammered by the other's leads during transportation. So much so that it has some ...
- 37
5
votes
1
answer
535
views
Can capacitors be damaged by a DMM in continuity mode?
Some multimeters have a pretty high open circuit voltage in continuity test mode and resistance mode (possibly to improve SNR?), but they are current limited. For example, the Fluke 87V behave like an ...
- 61
1
vote
0
answers
108
views
How could this capacitor have been damaged?
During testing, a capacitor was found to cause an intermittent failure - going short circuit when heated.
The capacitor style is a through hole, radial lead, CECC rated 68nF MLCC. Our supplier makes ...
- 1,108
2
votes
2
answers
964
views
How can you damage DMM if you haven't discharged a capacitor?
Hi, I measured capacitance on some capacitors using my UNI-T 139S True RMS Multimeter without discharging them first. To be clear, I don't even know if they were charged because they are mounted on ...
- 23
0
votes
2
answers
1k
views
Is this Bad Capacitor repairable on this power supply?
A capacitor blew on my B-Tron 16-8-1 power supply.
When I removed the cover and unseated and reseated the fuse. The power supply began to function again. BUT the power it was giving to each channel ...
5
votes
2
answers
581
views
How long can equipment go unused before powering up runs the risk of damage?
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 ...
- 173
5
votes
4
answers
6k
views
Is a capacitor bad when it looks like this?
Hello I am new to the electronics field. I am looking inside of one of my synthesizers and I see some capacitors (I think they are Mylar, correct me if I'm wrong) that look like this. I know it is a ...
- 97
0
votes
1
answer
83
views
Can parallel addition of a bigger capacitor damage the smaller one?
I have connected big capacitors to the speakers to increase the bass. Now, after months of using, I notice that one of the speakers sounds 2x low. I ejected those big capacitors, still the same.
I don'...
- 105
0
votes
1
answer
164
views
Can you identify these two SMD components? [closed]
A couple of components get knocked off by some loose elements during the shipping of some equipment. I'd like to identify the elements and solder in some replacement.
My guesses:
left one is a 270uF ...
- 101
3
votes
1
answer
264
views
Protection from leaking capacitors - store upside down?
I collect many vintage computers. Most of them use through-hole capacitors, some axial, etc. Some also use SMD caps.
When I store my computers, I always remove any batteries.
Anyway, I was ...
- 1,208
3
votes
1
answer
827
views
Can a capacitor damage an Arduino?
For a low-current IC (< 1 mA) where I need to be able to switch it on and off, I'm connecting it directly to an Arduino analog pin. In order to ensure a stable voltage, I was thinking of adding a ...
- 405
5
votes
1
answer
6k
views
Electrolytic Capacitors damaged while Soldering
While adding a new lead to a pcb board by soldering iron touched one of the electrolytic Capacitors, and melted the plastic casing of the Cap.
Should I replace this Cap?
1
vote
3
answers
11k
views
damaged capacitor and/or power amp
I have a Mackie MR8 MK2 powered studio monitor that recently started making a horrendously loud humming and clicking noise (I mean LOUD, as in cover your ears). Being just out of warranty, I decided ...
- 209