We've got an MK2 player here which doesn't take inputs from the remote or via buttons or encoder except on very rare occasion when a lot of the buttons are mashed at once and repeatedly, an occasional command will squeek through, usually repeated over and over until the unit is shutdown. We don't see huge numbers of missed interrupts although there are some. All the connections to the PIC from the pushbuttons and encoder test good as does the cable connection to the board. We've tried resoldering the IR receiver but that didn't change anything.

Anyone else seen this and know how to correct it?
Stu