Just picked up a JM for our location but the hand is starting to act up. I think one of the connectors on the driver board is bad because if I reseat it, it works for a game or two - then quits (often taking down the drop target up. Probably just going to replace it with trifurcons.

Oooh boy, back to the problems.
Repinned the offending connector but still am having no Y movement and no drop target down. Combing the manual to find where those two things have something in common.

Checked the connectors and all seem fine. I quick switched the j2 and j3 on here to see if I would get movement on the y only. I did. I’m guessing that cracked cap is causing problems. Anyone see any other obvious problems?

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Boy this game is a basket case. I finally get my hand moving again after getting the relay board put it. Now I have a column of lights out that I can't trace.
And then I get a stuck in hand error :/

Let's add the ball wont release to the problems now! Ugh.

Julius: when I get back into mine I will.
In the mean time does anyone have a pic of how the matrix clear is assembled? I followed the manual and I’m getting no range of motion.

I have my hand assembly completely out. Are you talking about behind it or under the playfield?
Still having no luck with the matrix clear (or the stupid hand release but I think I have bigger problems) if anyone has a pic of it.

Everything seems to wind through a 0 shape. Mines still a wip though.

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Does anyone have a good pic of the arm for the matrix clear? I know it has to be shimmed out with washers, but mine just doesnt move freely.
Then, I'll get into the dozen other issues (broke drop target, x movement, etc)

Thank you. Wonder if my arm isn't just a little bent out of shape.

My hand works again fine in test but the up and down range is really strange in game. What was the fix for this again?

Forward and backward. Works fine in the manual test.

Oh sorry I thought I typed a better explanation. It won’t go up high enough to read the 123 digits (were it a real phone.) it has a full range in the hand test.

Sorted the hand out. But after rebuilding the matrix clear assembly, it will simply not clear.
New coil. Voltage is fine. I can hear it fire. But something is up.

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Should I have a washer on the other side of it? I’ll try that tonight.

Finally got around to trying your advice and still no dice. I dont know what I'm missing here. I'll rebuild it all the way from the manual again.

Thanks everyone I’ll pull it and take some pics

The previous owner did have too heavy of a spring on it so I have the right one on. It works fine pressing it by hand but something still seems odd. The person who I had fix the hand said the voltage to the coil is right but I can retest it.

It’s a new coil and sleeve and it does fire in test mode it just doesn’t get enough pull to clear the thing. I can move it by hand but something is just enough off to cause a problem. This is why it’s so baffling.

Man that dolphin is really tempting. My plastics are all fine but the one over the right target and I could use an x+y nut hmm.

Good work.

Also thanks everyone for the matrix clear pictures. Mine seems to be the same way and in test if i nudge the plunger just a little bit, it catches the charge and lifts the rest of the way. Moves free by hand.
What voltage should I be getting at that coil when it fires?

Well I somehow solved my Matrix clear problem. In a related note, if anyone can take a pic of their knocker wiring, that would be great. The knocker took down the voltage on the game somehow.

There’s a bad diode or connection somewhere. It’s just time to start tracing and checking all your switches.
Does anyone have this plastic or can cut a single protector? (In the US )

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Took the glove and motors apart to clean it all so who wants to come put it back together for me