I got a nice Kenwood KA-3500 amplifier from a friend wich I'm planning to re-cap. First I measured the DC offset wich is aprox 28mV per channel, so that's not too bad. Next I wanted to measure the bias but the service manual is not clear to me, so I'm hoping some can help me out.
Do I need to attach the propes like this to measure the bias:
An externally hosted image should be here but it was not working when we last tested it.
Do I need to attach the propes like this to measure the bias:
An externally hosted image should be here but it was not working when we last tested it.
Yes you are correct.
Mark the trimpot positions with a very fine permanent marker pen BEFORE you start.
Allow amp to run to get up to temp (lid on) before adjusting and check again after running with lid back on.
Dan.
Mark the trimpot positions with a very fine permanent marker pen BEFORE you start.
Allow amp to run to get up to temp (lid on) before adjusting and check again after running with lid back on.
Dan.
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