checked switch no change. Two questions, can you tell me if the return wire is soldered to the correct pin under the mother board? Don't laugh at this second question. I know I can take can take a good chip from a MTH PS1 board and swap it with a bad chip in another PS 1 to see if I have a bad chip, The question is I do not have a test unit to check the RS board. Can I take another RS board diesel or steam and swap it out just to see if the original board is bad ? Not concerned about the type of sound, but weather the board or chip are bad. I hate to spend $ 50.00 on a guess
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