SHADOW SOUND AND DMD PROBLEM (SOLVED)
Hi all. I recently bought a restored TS and was having a great time until I hit a few hurdles. I treated myself to the Aurich alternate translite and after installing it I have about 12 evenly spaced vertical lines running across the DMD. Also, only some sound effects and music are working. During the install I took the DMD panel out and cleaned it up before putting on the new Aurich artwork and then putting it all back in the machine to start playing.
The above may be irrelevant because as I was playing the first game my GF turned off the room lights. The pinball machine is powered by a power point that also has the light switch in it. I think this it when things went downhill. Could there have been a power surge or similar that cooked a few things? I'm not sure where to start really. Other than to re-seat the things I disconnected when I remove the DMD panel. Got opto faults too, but that may unrelated. Any tips would be greatly appreciated.
Solution: I sent the boards off to a local guy Ken Shipley (Skybeau on Aussie Arcade forums) who kindly checked them over for me on Christmas Day. They were fine. So I then double checked all of the ribbon cables - first visually and then for continuity with a multimeter. Took ages and was very fiddly considering I had to jury rig my multimeter with thin wire on each end of the probes so they would fit into the ribbon pin slots. There it was - the signal wasn't getting through one of the outside wires (#1?) between two of the connectors on the 34 pin ribbon. I prised the connector open and found that the wire had snapped. A bit of back-yard basic electronics and after separating the wire from the ribbon, I joined the cut wire with the wire from a garbage bag tie and covered the join with some heat shrink. I then crimped it back into the connector, put all the boards back in the machine, connected it all up and voila! Everything worked. No more sound problems or "jail bars" on the DMD. Thanks all for your suggestions - which were all on the money as the ribbons being the cause.