Re: Quad 303 repairs.
Before you switch back on you need to know why the resistor failed and what else failed at the same time. It sounds like one in the bias chain in which case you should test the driver transistors. As you have a working driver board, you can do some in circuit checks by comparing resistance measurements between the good and failed board. Don't switch power back on till you are confident all transistors on the board are good.
|