I'm hoping someone can help me out.

I was trying to diagnose issues with my STTNG, so I tried swapping the MPU board from my Getaway (both WPC-89) to see if that eliminated the problems. I swapped the ROMs at U8. It didn't work, in fact the STTNG became even worse.

I switched everything back as it was, but now on Getaway I have a plethora of issues:
- Row 8 and Column 8 in the lamp matrix are out
- 7 switches show closed when they are open, but they are spread out all over the place (5 are the optos related to the supercharger ramp)
- 3 coils no longer fire; kickback, outhole and lo diverter (where is the lo diverter coil on Getaway anyway?)
- left sling flasher doesn't work on the playfield but does work on the backbox
- right sling flasher does work on the playfield but doesn't work on the backbox
- the relay clicks randomly during test mode

Now here's the funny part. These all go in and out as you let the game sit in attract mode. You can see the lamp matrix row 8 and/or column 8 turn on then off, and I've even had all the coil issues disappear briefly.

What did I cook?

So I've reseated the ICs the ribbon cables and the IDCs and Getaway now lives again. Not sure which of those three was the ultimate culprit.

The only thing is when it starts from cold, it takes about 1 minute before the flippers will actually work. Until then they are weak to the point of not working at all and garbage is displayed on the DMD everytime you flip. After a ball or two everything starts working as it should.

Which boards? What parts?

I have replaced BR1, BR2, C4, C5, repinned J114, J115, J210, so I'm getting 4.98V all the way to the MPU now.

I've now gone even further, replaced all caps on the PDB and DMCB as well as the bridge rectifiers on the DMCB.

No change. As a matter of fact, the flippers now don't work any better when the game warms up. They are constantly weak beyond usability. Still get garbage on the DMD when you flip

While I wait for my ribbon cable order . . .

I have a ball eject issue into the shooter lane. Many times the ball won't make it into the shooter lane and sits halfway between the lane and the ball trough. I took the ball shooter lane eject assembly out and noticed a fair bit of play/slop in the mechanism (at least a half inch). My guess is that the arm may be glancing the ball instead of hitting it directly due to this play. Are they supposed to be this way?

I'll continue to bang my head now

Road block.

Apparently Marco no longer sells ribbon cable kits, at least not for HS2. Is it as simple as taking the ribbon cables to a local computer store to try to find the closest replacement?

Finally got replacement ribbon cables - no help

Tried replacing the flipper leaf switches, and the problem changed slightly but is still there. Right flipper more powerful but still not great, left flipper no longer works, garbage on the DMD is gone. Maybe need to look at the leaf switch wiring more closely.

Does anyone have photos of their flipper leaf switches?

Have since sold the machine, including the flipper issue - never did get it resolved.

Good luck to the new owner - he has some very capable technical help locally so I'm certain the issue will be resolved soon.