by Peter W. Mon Nov 19, 2018 9:34 am
thermionicvinyl wrote:I’ve monitoring the amp a bit more have been playing different sources through it. Managed to get both channels working but the sound only contains very high frequencies and even at the highest volume level is only very quiet. The back left socket continues to make any tube in it arc and spuder. I’m running out of ideas of what to do with this amp.
At this point, I very strongly suggest that you put the amp out of service until it may be checked by a specifically knowledgeable individual with the correct tools and instruments. Everything is 'good' until you toast a transformer, or worse. Equally, I would not even consider remote diagnosis however good the pictures inasmuch as the process from your initial post to the one above is not linear. This is not a criticism by any means or implication. It is simply that what you describe could be:
a) A bad tube or tubes.
b) A faulty component or components.
c) Faulty wiring - although if it ran properly for a year, the fault would be very likely mechanical rather than miswiring.
d) Something else...
e) Two-or-more-of-the-above.
And it is the 'something else' that leads to the suggestion above.
Consider cascade effects - 'something' causes 'something else', which, in turn causes another 'something'.
Again, where are you? This amp is not something you wish to ship, casually.