sooooo....weird question about my who dunnit.

pudluther

Active member
Joined
Aug 15, 2007
Messages
2,200
Reaction score
9
Location
South Carolina
ok, so, i was playing the other night...about a week ago...noticed that after a bit my game would suddenly go dead, no lights/music/sounds/power/etc, and then restart. i thought it was weird, thought i had a bigger problem, but it was late and i left it be.

fast forward to tonight...

i fire up who dunnit again to see if i can tell what's triggering the reset and right off the bat, i hit both the right and left flipper at the same time and BAMMM!!! it resets.

try it again...same result.

one more time for good measure. yep. resets itself.

ok...sooooooo...something is shorting out something somewhere (that's the technical definition. lol). what's my issue with this pin? what's going on?

and i should state that i can't check it right this second because, for whatever reason, my keys to this pin no longer work. they used to. nothing changed that i'm aware of. but they no longer work. it's like something is bound in there and the key simply will not turn the lock.....and i'm the only one to ever go inside my pins.





<sigh>
 
Put some dry graphite on the key, put it in and out of the lock 10-15 times and then see if you can turn it. Sometimes the springs inside the lock are shitty and "forget" the layout of the key. Had this happen with my car key a month ago.
 
Put some dry graphite on the key, put it in and out of the lock 10-15 times and then see if you can turn it. Sometimes the springs inside the lock are shitty and "forget" the layout of the key. Had this happen with my car key a month ago.


thanks frax.


any idea on the dual-flipper-short-out thingy?
 
Have heard that can be due to the 5v supply to CPU dropping when the voltage is already weak and both flippers are engaged, sucking all the amps out of the power supply.

I would check the +5v test point on the CPU board, get a helper or some alligator clip test leads, flip one flipper and watch what the +5v does, then do both flippers at once and see if it drops significantly. That could be causing the resets. Fix as far as I know is to rebuild the +5v rectifier supply (bridge rectifier and a cap).


The only other thing I can think of is a bad diode on the flipper coil, or the coil wired backwards, but you said it's only happening when it's BOTH flippers, so I'm pretty much ruling that out.

Couldn't type all that on the phone with the other post. :)
 
Back
Top Bottom