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there is no burn mark s on pcb and the supply is ok as it was not in use for some months .
there is 20mhz crystal two PC817 opto isloators for panel control ok i will try to get the picture of the board sorry its not so clear
i Have a dead gym tread mill unit i suspect the ic ATMEGA48-20PU is faulty
or needs to be re programed supply is ok crystal 20MHZ is ok
i am new with this
there is one sticker sayimg Model number TRC5001(2B)-DOACO (B46V/42V)
on the unit .IC has a sticker 48-N15 DOACO-000886FDI-13KM if i...
PLEASE CAN SOMEONE MODIFY THIS FOR 10HZ to 60MHZ using BF199 and 10uh ,100nf at input for personal use
like EG : Electronics DIY - Electronic Schematics FM Transmitters TV Transmitters Stereo Transmitters
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