On 2021/07/22 1:36 p.m., Kurt Freund wrote:
> I had to replace the backup battery holder on a Twilight Zone CPU board. That worked fine, but now the upper left flipper stays up in the activated position... it goes up as soon as I turn on the power. It seems like I must have shorted something out on the CPU board when I was soldering the battery holder, but I can't find it. Can anyone help?
Check the ribbon cables that go from the top of the MPU board to the
other boards. I expect you will find one is offset either one or two
pins - either sideways or up/down.
Happens to all of us every now and then!
(Please post followups or tech inquiries to the USENET newsgroup)
John's Jukes Ltd.
MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
(Pinballs, Jukes, Video Games)
"Old pinballers never die, they just flip out."