Bayamon
Jaja ok,I’m waiting for the pre drivers to come,let you know
Thanks for your help
(Topic ID: 203202)
Linked Games
Elvira and the Party Monsters
Bally, 1989
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Quoted from robertg130:Not righ slingshot,right bumper I mean
Check coil resistance, should be 4.0 ohms or more.
Remove 1J11, 1J12, 1J19 and 5J11, 5J12. Measure resistance from the ground braid to the control wire on right bumper.
Not sure what is the control wire some measures
Ground to positive in the coil is 1(open)
Ground to white (in the bumper switch)=820 ohms
Ground to green/brown stripe (center of switch)1.2k
Ground to yellow/violet(switch) =2k and up
Ground to red(violet strip) =1
Let me know if this ir right
Thanks very much
Quoted from robertg130:Not sure what is the control wire some measures
There should have been a blue/orange wire on the coil lug.
Remove 1J11, 1J12, 1J19 and reconnect 5J11 and 5J12. Turn on power. Start a game, does any coils lock on now?
With everything hooked up like this
Quoted from robertg130:No coil is lock with 1j11,1j12,1j19 out and 5j11 and 5j12 in
Start a game and test resistance to ground on each pin on the CPU board of the disconnected connectors J11,J12 and J19.
This all looks good, so with game powered on and a game started slowly plug in each connector. If a coil fires while plugging in connector, remove it right away.
If all is good then unplug 1J8 and 1J10 and put in switch test, does any switch show up on the display.
My fault, you need to be in switch test first. Then disconnect J8 and J10, see if any switches show up as stuck closed. If something shows up it's a board problem. If nothing shows then remove the balls and reconnect J8 and J 10. Does anything show up now. If something shows up look to see if the switch is stuck closed.
Test in again
With 1j11,1j12 and 1j19 out and 1j4,1j5 in
No coil lock
Testing again resistance in
1j11,1j12 and 1j19
1j11 all pins 1
1j12 pin 5=650 ohms the other all 1
1j19 pin 1 and 2=.4 ohms the others all 1
So there is something wrong in 1j12 pin 5
Check this and let my know
Sorry for my mistake
Thanks again
Quoted from robertg130:1j12 pin 5=650 ohms
Yes this is a problem, do not connect J12 at this time.
I'm in Vegas for the next 5 days, so I wont be around to much. You better keep 1J19 disconnected too. It seem that sometimes the pins are good and then later they are low ohms and locking on coils. This can be a bad Pia chip. Hard to catch this when it happens. I had this on a Pinbot board where a pia chip would randomly lock on one coil, even in attract mode.
Spottsville, KY
All this board checking... start looking at wires or something other than that. You are to focused on board being the main problem. I'm a newbie at pins but mechanic problems do not have silver bullet fix. I would eye ball the hell out anything that might cause a board problem.
Quoted from robertg130:I’m gonna change the pia chip and see what happens
I would test it first.
I'm back.
Quoted from robertg130:1j12 pin 5=650 ohms
This is for the A/C relay, some games switch this on and off in attract mode so some flashers can work. I don't have an Elvira so I can't confine this.
Quoted from robertg130:When I connect IJ19 right bumper stuck
Clip logic probe on U-45 pin 2 and leave game in attract mode and monitor the output, this should stay constant high.
I'm taking for granted that you checked the power supply output voltages. 5 and 12 volt.
1 month later
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