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Old 18th Aug 2018, 5:00 am   #11
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: Fuses keep blowing on Rotel RX400 amp

Thanks for checking the fuse identities.

People move fuses around and fit all sorts of values, so it can be risky thinking you've identified which is which just by the value fitted.

If you can post a photo of the substance at the base of the capacitors, we can tell you whether it's glue or not. These electrolytic capacitors are liquid-filled and the liquid is highly conductive and quite corrosive. It can leak out of capacitors which are failing or have been abused.

It sounds like your transformer is OK. Rectifiers and capacitors are cheap. If it's the transistors in the power amplifiers, then that's more trouble to fix, but still worth doing.

David
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