Re: Aux Power Drive Unit Board Caught On Fire!

The idea is valid...but you'd best know that you are connecting it to the
right place first! Sounds like you maybe were on the wrong pin and/or, had
a short and or bad coil. Also don't forget sometimes the same color wire is
used more than once.
As Korn said ohm it out first. Now if you don't find it there ya gotta
question if you are in the right place or if the wire is just broken.
You can physically chase the wire from the coil to it's source looking for a
break to verify also that it goes to where you expect.

Dallas...

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"PinballPoor" <super.pcc@xxxxxxxxxxx> wrote in message
news:Byzrg.235$bd4.204@xxxxxxxxxxx
Decided to try something someone else had success on here with. In
diagnosing a right ball popper that wasn't firing and coil is good, I ran
a long wire from the violet/yellow popper coil connection to point 1P11-5
on the CPU board connector. The schematic said that this point had a
Grey/Yellow wire connection and it does.
I turned on the pin (Space Station) and put it in coil test, let it auto
test to RT BALL POPPER and pushed the blk manual button so that popper
will continually test when I put the wire onto the 1P11-5 point with a
probe. I did just that and the coil did fire but there was a spark that
left black residue on the plastic connector. Retried the probe on the same
point and FLAMES! Diode D35 burst in 2 pieces on the Aux PWR DRIVER BOARD
and flamed. I barely dodged the flaming flying piece..The diodes just
above are either singed from the fire or got some collateral damage.
I don't know what I did wrong here.. Isn't this test a logical way to test
for a broken wire down to the coil from the head?


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