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How hard is it to solder and replace capacitors on a Power supply board?

post #1 of 3
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So it seems like my Viewsonic VX2835WM Power Supply failed on me. I was reading it was a common problem and was a failed capacitor(s) in the power supply board. I will open it up later and post pics.

Just some questions.
How hard is it to solder a capacitor? It's the first time I'm actually soldering so I'm a bit nervous.
Should I replace only the capacitors that are bulging, or all of them?
post #2 of 3
Replacing capacitors isn't that hard, dependant on their location. Try and obtain the specs for the specific solder that is required and also make damn sure you use the correct capacitors.

I would however like to advise against this, especially for CRT monitors and power supplies. These puppies are no joke, and messing with capacitors in this technology is extremely dangerous as they can store a powerful charge for extended periods of time. If you're going to do this, read up on how to effectively dissipate the charge within the PSU and then leave it for a couple of days just to be sure. The last thing you want is a jolt from a 1500W PSU.
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post #3 of 3
Quote:
Originally Posted by gbatemper View Post

So it seems like my Viewsonic VX2835WM Power Supply failed on me. I was reading it was a common problem and was a failed capacitor(s) in the power supply board. I will open it up later and post pics.
Just some questions.
How hard is it to solder a capacitor? It's the first time I'm actually soldering so I'm a bit nervous.
Should I replace only the capacitors that are bulging, or all of them?


It's not hard, and it gets easier if the capacitors you're talking about are big.

Whether you should replace only the ones that exploded and the ones that are bulging or all of them really comes down to whether the ones that still appear good are the same model as the ones that are bulging (better be safe and replace them all in that case) or how old the PSU is. Oh, make sure that the acid from the exploded capacitors didn't corrode the circuit board, otherwise you might have additional problems, like having to rebuild the circuit board with some wires, but at that point I'd just say it's better to just buy a new PSU.

Edit: completely agree with IcedEarth, be careful, the capacitors can hold charge for long periods, so take the precautions he said.

Rep to you IcedEarth!
Edited by tpi2007 - 3/11/12 at 4:41am
 
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