TA30 broken

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Bottle Rocket
Posts: 5
Joined: Tue Mar 07, 2017 3:28 am

TA30 broken

Post by Faff » Mon Nov 12, 2018 4:10 am

My wonderful TA30 112 stopped working. Very loud crackling sound when switched on which subsides but then no output. This is on 15 & 40 W settings on both channels but works perfectly ok on 30W.
ALL tubes changed.
An amp tech diagnosed and replaced some diodes on the channel switching board but it went again soon after I got it home. He is well capable of finding the fault eventually, but I'd appreciate any ideas here to save me a few hours of amp tech time (money).

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