(Topic ID: 307267)

Please Help with Addams family solenoid issue

By Dr-Hex

2 years ago


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#10 2 years ago

TAF is a FlipTronics I game.
It has a special "50V flipper power supply" on a small board in the head.
All other coil power comes from the power/driver board, J107, pins 1, 2, and 3.
Just below J107 is a row of 5 fuses. All of them are 3ASB fuses. The two left most fuses protect the flipper circuit. The three rightmost fuses are for high power, low power, and continuous power coils.

Ensure that the three wires that are pressed into J107/1-3 have not come out.
Ensure that J107 is plugged in.
Post a pic of the upper part of the power/driver board.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#13 2 years ago

Looks good.
Meter on DC.
We need to measure for power at the coil.
Game on.
Balls out.
PF vertical.
Black on side rail.
Red on coil solder tab of (say) slingshot.
Both tabs should read about 70VDC.
LMK.

Chris Hibler - CARGPB #31
Http://chrishiblerpinball.com/contact
http://www.PinWiki.com/ - The new place for pinball repair info

#16 2 years ago

With power at the coil lugs, the only thing left is for that power to find ground via the solid state switch (transistor) on the driver board.

I can see that C2 was changed out in the past.
The probable reason for that was that it leaked.
I'm wondering if the corrosion from that leaky cap has severed one or more very fine traces just below it. Those traces send the enable signals for everything.

Get a bright light and check that out.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

#22 2 years ago

That doesn't look like Rob's work. If that much corrosion was present when Rob got the board, I'm sure he would have abated it.

As my two friends above have noted, the parts to the left of C2 are corroded and require attention. Those parts are in the "zero cross" circuit.

The trace that pins4u highlighted may very well be severed. It goes to pin 1 of all of the 74LS374s and is the blanking signal. Without that signal, nothing on the driver board will work.

Are the lamp matrix lamps working?
If not, then that trace is definitely severed (eaten through).
Your board requires professional attention.
I can take care of it if you'd like, or Rob is certainly a good choice.
--
Chris Hibler - CARGPB #31
http://www.ChrisHiblerPinball.com/Contact
http://www.PinWiki.com - The Place to go for Pinball Repair Info

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