I recently got a Williams Laser Cue. While playing a spirited game the left flipper coil fried and I will need to replace it. I'm still learning how to troubleshoot my Sterns/Bally issues. When I fried a flipper on one of my Sterns it was a case of replacing a transistor on the SDU.

I don't know anything about Williams, yet. I figured I would go and replace a transistor as I did in my Stern pin. That is not the case with the Laser Cue which has a separate board for the flippers.

I am going to have to get busy and learn to trouble shoot is problem but I was hoping someone could give me the quick-start info. on why this flipper got so hot it would fry an egg and what I need to fix before I just solder in a replacement coil.

Thanks in advance.

OK. I replaced the flipper coil. All 4 flippers are working. But before I got to that point, like a fool I wired up my replacement flipper backwards and blew two fuses before I figured out what I did wrong.

Now, after replacing the flipper coil I cannot get a game started.

Before my flipper coil went bad the pin was playing quite well. This is a Williams and it has this quirk that you have to turn the on-off switch
on-off-on in rapid succession to the pin to start a game. I was doing that on-off dance and had no problems getting a game going. Now, after I replaced the flipper and fried two fuses in the process I cannot start a game.

I was advise buy the guy who sold this pin to me about the issue if having to flip the on-off switch twice to start a game. and the other day I stumbled into this switch thing in something I read. I cab't find that article now.

So, here I am again being sort of stumped. It was working and now it is not. If someone get get me going in the right trouble-shooting direction it will be much appreciated.

Did my wiring the coil up backwards and blowing fuses cause this no-start problem I have? I have done no other work to the pin. All I did was replace the flipper coil.

THanks.

Yes. It comes up in audit mode as in your pic.

I just installed new batteries this evening. No change. I will allow that the holder might be bad it seemed to check out with the volt meter.

I cannot add credits. Or anything else.

Turns on. Flippers work. And I noticed that the pop bumpers worked, as well. So, I get flippers, pop bumpers, and GI lighting.

And now a new problem cropped up. I noticed that one of the pop bumpers was not working. I lifted the play field and manually activated the pops and sure enough one pop was not working. I did my little quick coil test by jumping across from another pop coil that was working. When I activated the working coil the jumpered coil started hitting, too. So, I know the coil is working and I must have a power problem to the jumperd coil except after popping it 3 or 4 times, I lost all of my pops. I don't know where the fuse to the pop bumpers on this pin are at so I am scratching my head.

I am going to go to pinwiki and see what I can find in the way of a troubleshooting guide.

What is this CMOS RAM? That is something I have been passing over during my reading on Data East and Williams pins.

New information on my Laser Cue:

My replacement flipper coil fried, as well. And I found out I also had not one but two pop bumper coils that were bad. So I replaced all of the TIP102 transistors and the N4401s. Replaced all three pop coils and another flipper coil. That fixed things up and I was able to get the game up and running. I played quite a few games for the next hour without any issues. However, when I turned the game off and then went to turn it back on it would not start. I tried flipping the on-off switch several times but cannot start a game. I have fresh batteries in the remote battery holder.

I will ad that now that I have had a chance to play it that it is quite fun to play.

I keep getting these error messages in the displays.

I'm going to roll the dice and assume I need to replace IC19 CMOS 5101.

Where is a good place to buy this CMOS 5101 IC? I see them for sale on Ebay. Is one brand better than another? Any thoughts and directions appreciated.

Thanks.

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