开云体育

Hi,

I had a couple of intermittent faults on mine (E14 & 35) which could never be induced to appear when the top two PCBs were 'unfolded' to their service position.

One was tracked down to one of the ribbon cables that, when the PCBs were folded down and the ribbon was tucked under the board had damaged insulation which looked it was caused by the ends of its own PCB connector tails on the underside of the board. Clipping the tails and a bit of Kapton tape fixed that. The other took an age to find and turned out to be one of the big plug-in ICs with heatsinks (U302?) on the bottom board had one of its legs curled under itself rather than plugged into the socket and thus contact was intermittent depending what was pressing on it - or not!

The moral of the story was just the act of opening the thing up (and closing it) could induce faults (and clear them!) it doesn't have to be anything to do with the bit you worked on!