Hafler Pro 500: Service info needed

Pro Audio Asylum

Pro studio recording equipment and music production/industry.

I picked up one of the old Pro 500 amps last week and need some help with it.
Specifically, I need adjustment information on the input/control board, called a PC-20. This board handles the balanced-to-single-ended conversion, and has the circuitry that drives the Signal and Clip LEDs, as well as the level controls.
I've found the schematics online and have figured out what chip is bad but there are some level and DC offset adjustments to be done after component replacement. That's the data I'm looking for.
Can anyone help?
Thanks in advance and cheers,
David

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Kimber Kable

Topic - Hafler Pro 500: Service info needed - doodlebug 07:19:20 01/08/07 (1)

Problem solved...... - doodlebug 19:54:09 01/12/07 (0)

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