Sunday, 6 November 2011

Harley Benton GA5 head - Diagnosis

Took the GA5 to see Oli today, as he knows a bunch more about amps than I do and I was sorting and IDing a load of old (and I mean old) Warhammer stuff for him.

Turns out the problem is the power amp valve (EL84)... which it had occured to me it might be but without any other valves to test it with I couldn't be sure. Just glad it wasn't the power transformer really, as apparently those can be expensive.

So next thing is to get a new valve, I might replace the 12AX7 at the same time just so then it's full of all new valves. Oli tested it with Mullards, but I suspect those'll be a bit out of my price range.

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