Measure the test point for 12 volts opto power on the power driver board. And see if the 12 volt fuse is good.

LTG : )

TP1

F116

If your 12v is blowing on power up, I would test the Bridge Rectifier that feeds F116 for a short. Pinwiki has all of thetesting details.

Probably the bridge and cap but you can always pull J116, J117 and J118 to see if it's a load issue. If it still blows with those pulled then it's the bridge and or cap. If your 12V comes back at TP1 comes back then it's a load problem on pin 2.

Section 18.2 for testing BR5.
http://www.pinwiki.com/wiki/index.php?title=General#Testing_a_Bridge_Rectifier

Bridge rectifiers normally cause fuses to blow because one of the AC inputs shorts over to the (+) or (-) output when it fails.

Sweet! Enjoy your game and have a Merry Christmas.

Hi All,

Not sure if it is better to start a new thread or jump in on this one...

I have an IJ with similar problem to above ?

Both the mini playfield and the idol motors will not function.
Same errors show up as the ops above
LED 7 is out on the power driver board.
I tested TP1 and was getting nothing... maybe half a volt...
J112 connector looked ok and still had power through the F116 fuse.

Is the problem the bridge rectifier at the top left of the power driver board ?
If yes, I guess try reflowing the solder joint first and then replace if needed ? 35A 200v

Thanks in advance for any advice. I read a bunch of threads about folks doing work that doesnt need to get done and then making things worse.

Jim

You could pull the board and with a meter compare readings of the legs to other bridge rectifiers.

Then consider replacing if it is different from the others.

LTG : )

You need to check this out just as this OP has done.

thanks guys. will pull the board and check out the rectifier... appreciate all the advice on this site. I would not even be this far without everyone's posting and help. glad to hear I am headed in the right direction...

Can't say I ever seen a solder problem on a bridge rectifier unless it was previously replaced. Even then it may be more of a damaged feedthrough.