Arcade Collecting > Pinball
Black Knight
ChadTower:
Replaced Q19, the predriver right above it, and the two resistors above that. They all looked questionable. The traces on the backside were intact but toasted off the board so I used a cut resistor leg to jump a really short one and some wire to jump the long one. They beep out much stronger now...
...but more importantly coil 3 fires nicely now. ;D All coils pass, all sounds pass, lights look as good as old bulbs will, and when I manually reset the drop banks all switches pass. Looks like I'm ready to tackle the upper playfield soon.
I also got the 5101 issue fixed. Turns out it wasn't the 5101 at all. The new batteries leaked. Let's hear it for the off board battery holder mod! That just saved me a bunch of hassle. :applaud:
ChadTower:
That thought did occur to me. What's weird is it was the middle battery only. I'm sure I'll have to pull the CPU again sooner than later for some reason. When I do I'll just swap that out even if it tests good. It's a 60 second job.
Q*Bert_OP:
--- Quote from: pinballjim on October 19, 2009, 09:58:10 am ---If anyone in here gets their ball trough plated they deserve to be kicked in the nuts.
--- End quote ---
:scared
Warn me before you come to Corpus...I'll have to protect my ball trough
I even sent the prop stick off to be plated on my Xenon restoration...
ChadTower:
Put the top of the playfield back together, mostly shopped on top, so we could put some test games on it. Plus we want to play it.
Won't register end of ball -> none of the trough switches are working -> trace the line to the scoring switches on the kickers -> lower playfield turnaround -> lower playfield eject. That's the whole green-orange line in the switch matrix.
EDIT: traced it back to the driver board connector, if I hold down one of the switches and wiggle the connector, the switch starts working. It's either a cold joint on the header or a bad pin on the connector or both. Headers were all reflowed when I did the driver board so I'm betting on the connector. IDC sucks anyway - I have the parts to replace.
ChadTower:
I have pulled it a lot of times lately while working on the boards. Guess that got this pin... may as well do the whole connector to be sure.
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