This week I bought a empeg MK2a player from someone at ebay. I knew that the player is not working correctly. So I had to repair the display (two burnt fuses on the mainboard) and a problem with the IDE controller. (Cold soldered connection at a buffer chip). (At purchase time I only knewed about the display problem, not about the other errors )
Now everything is working but the IR receiver. The player does not react if I press at a keys on the remote control. If I exchange the display board with one of my spare empegs the remote control works as expected.
So the problem must be on the display board itself. All the other parts on the display board works as expected (Display, Buttons, LED)
Any idea what can cause this problem? Detective ir receiver? Any possibility to measure some signals somewhere?
Thanks for any help