High Speed problems

gars943

Member
Joined
Sep 4, 2010
Messages
114
Reaction score
2
Location
Parma, Ohio
A friend has a "High Speed" with a few problems that happened all at once. It was played one day and a few days later it was turned on and is getting the following errors:
Left side ball trough #2 (center) Switch #11, and Left side ball trough #1 (lower right) Switch #12, would not recognize the ball when it entered the trough. Ball shooter #36, Left flipper engine revving e.o.s. #37, and Right flipper engine revving e.o.s. #38 will not work. Also, all 3 pop bumpers work, but do not register points.
All fuses that I could find were removed and checked- all okay. Checked the connectors at 1J8 and 1J10 on the CPU, everything seems to be fine.
Can someone give me an idea of where to start looking or any other ideas?
Thanks,
Gary
 
There is a switch test in the game, use that to check switches.

Then check for adjustment, clean if necessary for point blade switches, and follow each switch that doesn't work to other switches of the same color wires back to the board in the head for broken wires.

LTG :)
 
Thanks, LTG for the reply. Been there done that, even tried bypassing the switches (2) on the playfield no go. Just seems like all this stuff happened at one time and is controlled by something that I'm not seeing. I did not jumper wires on the cpu to confirm that the cpu has got problems, I feel like I'm missing a fuse or plug or something like that...
Can anyone else add to the troubleshooting?
Thanks,
Gary
 
Sounds like you need to isolate if it is under play field or in the back box. Probably should do some jumper testing with the play field disconnected. When mine went haywire similar to that it ended up being a shorted diode in the lamp matrix that was the root cause. Took lots of testing to find it but by jumper testing the boards without the play field I knew it was in the wiring under the play field and not the boards.
 
Back
Top Bottom