Hi fellow pinheads,

I bought my first pinball machine a few weeks ago ( Rollergames ) and I've been struggling with a few issues.

When we played the first game, I found out that the Knocker (07A), Upper kickback (13), Lock Kickback (14), Ramp Diverter (18) and Outlane kickback (20) weren't working.

I read a few tips on system11 and busted out the DMM. The Outlane kickback (20) was only reading 1.4v at both lugs even in diagnostic mode, so it made sense that it wasn't working properly.

I checked all the fuses on and they all beeped but I found out some of them were way higher in amperage than they should be so I replaced them with what is listed in the manual. Still not working but wasn't surprised. Then I found out there was a hidden fuse below the playfield (2 1/2A) that was blown. I replaced that one and now the Outlane kickback (20) worked but was stuck open. Also, the flippers were super weak. Then I saw that the F7 fuse on the auxiliary board had blown. Replaced it and now the 3 bank target (WAR) doesn't reset, the ball popper doesn't work and all the other problems that I had before stayed too.

Today I was reading the manual and there seems to be an error somewhere regarding the correct fuses to use.

Could it just be my problem all along was the blown fuse and since I replaced the (2-F4 and 2-F7) 7A for a 21/2A and 4A respectively that it doesn't have enough power to work properly?

Thanks for your help!
AuxiliaryPowerDriverBoardPage44 (resized).pngFuseListingPage40 (resized).png

OK so I tried to continue diagnosing the issue today:

I replaced the Aux. F4 and F7 fuses with 7A fuses again and put a new 2.5A under the playfield because it was blown.
Powered the game on, ran the solenoids diagnostics and the 13, 14, 18 were now working. As soon as the test got to 20 (Outlane Kickback) though, it did not fire and when it circled around, 13, 14 and 18 weren't working anymore. Looked at the fuse under the playfield and sure enough, it had blown.

- Checked the diode and the transistor on the high current driver assembly, everything was reading fine.
- Checked the diodes on the Aux. board as well as the transistors, everything reads fine.
- Same thing with the CPU board transistors, none of them "beeped" as shorted...
- Removed and resoldered the Upper Kickback (13) as I thought the diode could be bad. (Is there even supposed to be a diode on this coil? I don't see this anywhere in the schematics)

Anyway, so I think the issue must be with the Outlane Kickback now but... what could make the fuse(s) blow? (Either Aux. F4 or under the playfield, both are related to the same solenoids I think)
Is it normally a bad component somewhere (diode, transistor, other?)

I'm back!

I unscrewed and replaced the fuse holder that is located below the playfield, clipped the old quick-disconnect terminals and crimped some new ones.
This fuse holder is now visible and allowed me to easily found the issue. I put a new fuse in and ran the coil diagnostics. As soon as it hit the Ramp Diverter (18) coil, the fuse blew.

So I removed the plastic in the back and the coil looks totally toasted. I clipped one of the wire and put some electrical tape at the end of it.
I put a new fuse in and everything else is now in working order!

So now...

1. This coil is NOT easily accessible. Looks like I'll have to take the playfield out to replace it. Does anyone know of an "easy" method to do so?
I do not have a rotisserie and would love to be able to avoid building one just for this.

2. While running the diagnostics previously, I also saw that the left flipper was sometimes twitching when other coils were firing. Is that normal?