left channel went out...

djspacewhale · 2424

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Offline Paul Birkeland

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Reply #15 on: October 20, 2018, 11:14:41 AM
Quote from: djspacewhale on October 20, 2018, 10:19:41 AM
I'll try resoldering the TIP50 then and update
These are not the instructions I provided.

Your tests reveal that the TIP50 is very likely touching the heatsink. There's a warning in giant text on page 22 of the manual that is where you should start reading to get this issue resolved.

Paul "PB" Birkeland

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Offline djspacewhale

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Reply #16 on: October 22, 2018, 05:28:36 PM
I got both channels working again! I took apart the board and put it back together, and now both channels are outputting - the right channel is still quieter than the left, though, and as far as I can find from other threads that is a resistance problem? the right heatsink is still less warm than the left, haven't checked voltages yet but I did notice while reassembling that one of the insulating thingies between the transistor and the heatsink was ripped so that might be causing this? is it possible to get replacements for those?
« Last Edit: October 22, 2018, 05:35:45 PM by djspacewhale »


Offline Paul Birkeland

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Reply #17 on: October 22, 2018, 06:53:57 PM
Yes, you should not run the amp with damaged insulators, and you should never use an amp that hasn't passed its voltage checks.

You are heading down the road of burning up your power transformer, and they are very expensive and time consuming to replace.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

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