Do you have? or where can i get a schematic drawing of Adcom GFA-5300 amp? need to know where the driver circuits are. and how do i check the driver circuits and know they are working?.output transistors are fried.
The driver circuits should be just before the outputs in the circuitry. The easiest way to check this circuit is to remove the outputs and turn on the unit. Measure each of the transistor pads relativce to ground for DC voltage. You should see the following: B+,0.6V (or 1.1V), and 0V on one transistor and negative values on its compliment. If you have questions, measure the pads and post the measurements here. In some cases the output transistor needs to be in place to get the values above, so if yours don't measure that way, just post what you get and we'll continue from there.
Dan
Testimonial: "thankyou!!"
Register and download the sparse manual for free at retrevo.com
http://www.retrevo.com/support/Adcom-GFA-545-Amps-manual/id/582ci563/t/2/
Pictures:
http://www.audiocostruzioni.com/r_s/ampli/amplificatori-2/Adcom%20GFA%20545/adcom-GFA-545.htm
It has two clearly labeled inputs and TWO corresponding speaker outputs.
(Wincing) in-line volume controls???? For casual listening? Say it ain
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