Sunday 16 February 2014

Carlsbro PA60 - Power Up Test

New resisistor and HT fuse in, powe cord into amp, plugged into circuit breaker (safety first).
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Power on! Light! Wheeee!
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Check HT fuse, just to be sure, and it's blown with no valves in the amp.
New HT fuse = blown

Dodgy capacitor is the most likely culprit according to Foxen and sure enough there's a bit of white fluff by the vent on one of the filter caps, which means it's probably dead, and this is further borne out by a quick voltage test across the caps. Best thing at this stage is to do a 'brute force' recap, so that's more money to spend.

Bah. But learning is good.

1 comment:

  1. Hi mate!
    I have recently acquired one of these amps with the matching speakers.
    its in not back nic, I opened it up and found some of the small caps are leaking, I have tried searching for caps of the same value but am struggling. I have never changed caps so not sure if they can be changed for different voltage values with the same uF rating? could you keep the posts coming please with details of the parts you use so I can bring the old amp back to its former glory without damaging it and learn in the process too! thank you!

    Ash :-)

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