Ok, so I got my Getaway just a few days ago. Love the game. Always have since playing it as a teenager. The Supercharger was working while I've had it. Definitely kept the balls going at speed, completing the 10 loops to get the jackpot in multiball. It isn't now though. I've done some troubleshooting and wanted to share what I've done and see what you think is next.
I got some good direction from Mr. Tantrum. We chatted about a 3D part for the shifter and then I asked about the Supercharger problems. Among other suggestions, he gave me this link to a previous Supercharger problem thread:
The initial description is pretty much what mine is doing. Upon turning the game on, it tells me those same switches (optos 1, 2 and 3 plus the two ramp optos) are either stuck open or in error (says to check them). I also found my fuse F103 blown. I didn't realize at first it was blown and put another fuse in (3A SB) and I actually saw it glow and blow right in front of my eyes as I happened to keep the backbox door open when I turned the game on.
So, something shorting from what I've read. Here is the current status of things I've checked:
Switch edge test for all five optos on the ramp and Supercharger is fine. I can interfere with the beam using the tip of a pen and it goes from closed to open.
I have disconnected each of the magnets and tested each of them for continuity by putting my two leads on the multimeter into the magnet side of the plug and each is ok.
No obvious shorted or loose or disconnected wires up on the Supercharger with the magnets or optos or lights.
Underneath the playfield, I have looked extensively at the accelerator board. Nothing appears melted or charred or loose or disconnected.
I removed it completely and tested each magnet's transistors (Q1 to Q9). My results are in this screen grab. I tested it from the bottom side of the board and used the 1-2-3 notation like in the image. Grumpy's suggestion in that other thread said to test 2-3, which I did, but also checked the others too. Mixed results that I don't completely understand. I think this is where my problem is?
I put the board back in place and checked for a short on the J6 connector as Grumpy suggested. There is no short on any of the pins when testing the connector end. I wasn't sure if you also meant to check the pins on the board itself to ground? I didn't check this, only the disconnected connector and it was 0L for all six.
I have the game back together with the exception of the magnet connections. I have those disconnected. When I power up the game, fuse F103 does not blow. The magnets aren't doing anything of course, which means the game isn't playable either.
I believe I need to get those nine Q transistors replaced, is that correct from what you've read here? Thanks!!!