Basic CD player in a micro music centre

Can't think of anything that you seem to be overlooking. First place I would have gone is the same as you - to the door switch. Even though the switch is working ok in itself, I would still feel inclined to make sure that its connections are making it all the way back to the micro, and doing something ie pulling a pin to ground or whatever. I've had internal pull-up resistors on micro pins fail. The only other thing that it's worth doing when all else has failed, and you've given up, is to try a possible 'real' system reset, by holding in the power button and applying power, and if that fails, a 'naughty' engineer's reset, by turning off and removing power, then hooking a croc lead to ground, and stroking round every pin of every 'micro-ish' IC both on the front panel, and the CD process board. I've known this to restore screwed up system controls on a number of occasions. I got it originally from a manufacturer's training course, but so far back in the dim mists of time, I can't remember which one now ...

Arfa

Don't forget the sled limit switch - brand and model info might help.

Mark Z.

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Perhaps stripping off at midnight and dancing around it on a full moon might work as well.

Only if it's a Philips ...

Arfa

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