ok so doing everybody's favorite activity SWITCH MATRIX TROUBLESHOOTING,, as right bumper firing causes upper vuk and slingshots to fire, with no balls In trough switch edge test read normal for right bumper with balls in trough get multiple switches reading for r bumper ,

no ball, just r bumper(56) reads when bumper is activated
ball in trough 3 : 56 read and 53 read
ball in trough 3 and 2: 56 and 53 and 52
ball in trough 3 and 2 and 1: 56 and 53 and 52 and 51
ball in outhole : 56 and 50

as well r flipper works but does not show up on switch test , disconnecting c1 connector of flipper board all the switch errors go away, seems like issue with sw16 (/ flipper board ) and short between column 2 and7,
i have checked all the diodes and the trough switches test ok ,, checked the matrix on the mpu board with the play field disconnected all switch readings correct

wondering if there might be 2 or more areas causing this, could a shorted diode pr other malfunction on the flipper board explain part or all of this ? thanks for any ideas

hook full 078 (resized).jpg

hopefully this works ,, a little better switch matrix view thanks to astyy of hook board

https://images.pinside.com/6/89/af/689afc05bfe2446fb82521f636b91ba39e4be761.png

when I jumper the switch matrix at the mpu board pins after disconnecting the cn 8 and cn10 connectors all switch readings are as expected, I thought this would mean a playfield issue?

I appreciate your ongoing help!

you are one step ahead of me then! , probably should have reminded that I have the rottendog mpu board in so the schematic will be different?

ok thank for the guidance pinball maniac so the pins on the chips read either 5-7( hundred) or 12-15 , for example pin 1 reads 500 ohms , pin 2 1500 ohms, pin 3 500 ohms, no discernible pattern between the legs or from chip to chip, on all the chips pin 20 reads pretty much 0 ohms ( maybe 30 ohms) . will check the original board for readings when I get a chance

If I am following your reasoning a short on the chips that go to the coils would cause them to fire when they shouldn't and this would not show up on the board pin matrix test?

but if this was the cause how is the multiple switch readings on the playfield edge test interpreted? I thought playfield switch edge test errors with normal pin switch matrix would mean playfield not mpu board issue?

when I disconnect the flipper board the switch edge test errors go away, and the right flipper switch does not show up on the switch edge test .as well when I measure the voltages at the cn10 connector disconnected from board with game in play mode for left flipper get 0 volts , for right flipper I get 4 volts or 4.7 volts with r flipper activated, is this normal or an issue with the flipper board?

I LOVE troubleshooting!( sometimes)

it is a pinled flipper board

came with machine , do not have original , looking back I think I noticed the right flipper not registering for high scores right after putting in the rottendog board , maybe the phantom firings with the right bumper too but it took me a while to figure out what was causing what, compatability issues? ,

there are a few switches on the pin led board, for 2 vs 3 flipper machines and eos vs non eos flippers , ( hook is 2 flipper , non eos)

I just had an idea , will pull the row wire for the right flipper from the flipper board connector and see if all the phantom firings go away

, if you remember the q52 transistor blew, I replaced it and it blew again , I had the rottendog so put that in, I have not gotten around to replacing the q52 on the old board yet .

sorry pinball maniac I did not realize you were not aware of the older issue you helped me with ..

https://pinside.com/pinball/forum/topic/hook-slam-tilt-phantom-need-board-repair-

to summarize fixed the old issue with the replacement board then this new issue cropped up

It seems to be an issue with the pin led flipper board( maybe with the rotten dog board it need some settings adjusted or the flipper board has a transistor or other component issue? )

disconnected the row wire for the right flipper from the flipper board and all the playfield edge switch reading errors and phantom firings are gone .

game playing great ! I can live without using the right flipper to enter high scores.

will look into troubleshooting the pin led flipper board( I can find very little info on it), any ideas?

here is a pi of the rottendog mpu board and pinled flipper board, thanks for the help

013 (resized).jpg

014 (resized).jpg