So a little backstory... for the past four or so years I've been "restoring" a Williams Indiana Jones machine. There's never been anything wrong with it, it's been in great shape... until I got my hands on. I first started small by just replacing the lights, but afterwards I got ambitious and decided to do a flipper rebuild kit because the left flipper had always been noticeably weak. The kit didn't really help, and I took a hiatus until I got ambitious again. I replaced the coils on the flippers which seemed to help a little, but there was still a problem (I eventually fixed this by researching the Fliptronics II board); however, during this ordeal I noticed there was corrosion on the battery pack/board area, so I desoldered it, and replaced it with a battery pack I made, but in doing this I made huge mistake by running the AAs in series instead of in parallel When I started the game again the DMD just comes up blank with the lights turned on. I eventually figured out my mistake and took off the battery pack, but it's been a year and I still haven't fixed it. So, my question is, since I presume the batteries go straight to the ram, do I just need to replace the ram? Or did the over-voltage completely ruin the board? Any help would be great.

Are you sure it's supposed to be in series to be circa 5v? Because otherwise you wouldn't be able to use a watch battery, as some users do, since it only does about 1.5v. I've checked the cables numerous times, that doesn't seem to be the issue.

I've already dealt with that issue - the corrosion wasn't too bad, and I was able to treat it with vinegar.

I attempted to reseat the ribbon cables to no avail.IMG_6477 (resized).JPGIMG_6478 (resized).JPGIMG_6480 (resized).JPG

One lamp turns on, some gargled mess on the DMD, and all of the LEDs turn on (potential error code?).
Here's what it looks like normally.IMG_6475 (resized).JPGIMG_6476 (resized).JPG

I reseated those connectors and on first boot up it showed more pixels, but still garbled; however, on second boot up it went back to the fewer pixels.

D19 is blank, D20 is blank (it was blinking continuously like normal at one point, then I restarted the machine and it stopped again), and D21 is on.

These are good resources, but from the reading it, it sounds like the display has overvoltage due to the sparkles. Any thoughts?

I checked the cable it looked off due to the angle of the picture, but I reseated it anyways to no luck. I'm starting to remember more of what I did when I installed the remote battery pack. I was using a crappy soldering iron when doing the work and accidentally melted the solder of an induction coil and put it back as best I could, but I think I may have not fixed the mistake properly (ie not a solid connection), so what I am to do now, if some of you agree, is that as soon as I attain a better iron I'll resolder the coil.