Original replacement upgrade, open frame board design, 11 pins for phono or line amp. New.
Parts unit sold as is. Unit has been partially repaired but has a bad transformer (L01-1611-05). Definitely repairable but this part must be replaced. Circuit boards were repaired at one time.
Intact machine good for parts. Two channel power amp.
Parts for repair. 380004400 rev 8. AMP board only, intact low use and tested with switch. Output transistors listed 2SD746A, 2SB608A $28 each. 2 pieces or more to purchase 22 each.
This is a complete Precedent Series 900, but one channel has failed at low level circuits. Very good cosmetic condition, very good electronic condition overall with no burnt parts. Buy the whole amp as is for $140 and shipping will be expensive, or but just the remaining perfect condition channel board (502-622) for $100. An experienced hobbyist could repair channel 2 with a basic parts kit.
We offer expert time-saving advice on repairing many types of home and studio equipment, as well as consulting for product and recording issues, at a fair and reasonable cost. For complex matters, we sometimes must charge a small technical fee. If we can help solve your repair problem or technical conundrum, give us a call. (617)926-8020.
Amplifier module only, Updated with better power supply capacitors (better reliability), Speaker level input/Speaker output, Line level input, Auto/On/Off sensing, Level control, Low-pass frequency 55Hz-170Hz (variable), Phase switch (0/180 degrees), Tested/burned in Good, Condition #8+