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Questions & Answers
Why cant you find a simple circuit board when i
Other than its a power board for a KLM 10" powered subwoofer board I can't really help you. I have been looking for a schematic for it for months. I am looking for were the black wire connects from the selector board to the power board. I guess a photo of it would work for me, it connects the base of q1 to the other board.
on Jan 19, 2018
If the sound is more of a low hum than a buzz, you probably have bad capacitors in the power supply...Time to take it to a shop.
on May 14, 2016
18 volt supply too low. resistor R42 burned. Q20
I would fit the same type, unless the schematic shows a change, which clearly it doesn't. However I would be surprised if R42 burnt up alone! Look at the schematic, is R42 linked to any other transistor or part? If so check them if you can.
By the way is R42 a fuseable resistor, for example is the symbol on the schematic or on PC board different to most other resistors?
on Mar 16, 2015
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