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In Reply to: RE: Cornell Dubilier Caps posted by bcowen on April 16, 2017 at 05:48:17
I have had people ask me about bulging capacitors, and I found that it was just the plastic disk on the bottom that had warped. Now, you may very well have a genuine problem, but it would be nice if you had the ability to run some technical measurements. Bulging capacitors usually do not test as normal.
That could well be all that's wrong with mine. I pushed on the area that was popped up, and it's pretty hard under there (no flex), but that could just be deformed plastic. I have a simple capacitance meter, but not sure how well it will work with the caps in circuit, plus I'd have to get the board out of there (which will take some work) to get to the contact points. Don't have any other testing tools beyond a DVM, unfortunately. Should have taken a picture of it when I had the bottom off...
Thanks for the info!
Any bulging electrolytic, you need to replace it.
Do not power up the unit with that cap visible to you, and wear eye protection when examining the amp. A failing electrolytic can explode violently at any time, spewing electrolite everywhere. You don't want to have to clean that up and you don't want bits of capacitor hitting you in the eye.
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