The amp in question is a KAC1021
Symptoms are - blowing in line fuse, hissing sound and smoke coming from within the amp before inline fuse blows.
the output transistors were tested against a working 1021 and a few were proved to be out of tolerance, so I pulled the lot.
the power supply transistors and diodes checked out fine.
after pulling the output devices I powered the amp up to test the power supply, a few resistors in what I believe to be the pre-amp stage went up in smoke behind one of the TA2030 devices.
R77 completely burnt
R69 burnt
R79 burnt
I can match the components from my other amp, my question is, could the damage be a result of the TA2030 failure?
if so how can I test it before ordering the parts to repair?
thanks in advance
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Symptoms are - blowing in line fuse, hissing sound and smoke coming from within the amp before inline fuse blows.
the output transistors were tested against a working 1021 and a few were proved to be out of tolerance, so I pulled the lot.
the power supply transistors and diodes checked out fine.
after pulling the output devices I powered the amp up to test the power supply, a few resistors in what I believe to be the pre-amp stage went up in smoke behind one of the TA2030 devices.
R77 completely burnt
R69 burnt
R79 burnt
I can match the components from my other amp, my question is, could the damage be a result of the TA2030 failure?
if so how can I test it before ordering the parts to repair?
thanks in advance


