I've had a number of these in for service over the last number of
years. I cannot remember the exact details, but I remember having to
change the outputs, drivers, and some bias resistors. I did the job
without the service manual. It is best to have the service manual, if
the faults are not streight forward.

In any case, if the service person does not have a lot of experience
with this type of repair, the service manual is an absolute necessity.

Jerry G.
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