Hello, I am a newbie here and my first post has to do with a Williams system 7 Laser Cue. All my displays are scrolling or rolling from right to left! I have reseated everything, checked everything I could think of and don't have a clue as to whats going on! Anybody ever had this problem and if so what did it take to fix it? Just about bought a new display driver board, but it could be my power supply board too, correct?

Thanks in advance for your help!
Dave

update, I have done more reading and troubleshooting. What I have learned is the high voltage runs the displays, and you have a + 100dcv and a - 100dcv, well my - is only 50dcv! So if I am correct it's a bad power supply? Replace or rebuild? Or is there another fix or problem I should be looking for?

How hard is the rebuild? I know enough to be dangerous!I took basic electronics in high school, but that was a life time ago!

Thank you for the info! Now I got to make a decision! And price solder suckers! LoL
Just checked GPE and wouldn't you know it, it's out of stock!

I will do that, thanks

thedefog I have a iron and a meter, it's the desoldering iron or solder sucker I am lacking. But I see one in my future!

I got my parts and desoldering iron, did the rebuild on the HV on the power board tonight and the good news is the game still works but I still have the same problem! Anybody got any ideas what might be going on with my displays?

The other thing I was confused about is where is ZR1 on the board, my schematic does not show a ZR1 on my power supply board! Thank for your help!!

Hi. sorry I haven't been on here much lately! Busy time of year! Yes I did get it fixed, I ended up replacing the whole power supply with a aftermarket board. I just didn't have any luck fixing it myself so I just replaced it! It is the High voltage that controls the displays, if you have better luck then me a rebuild will fix you up or you can just do what I did and throw rotten dog power supply in there and call it good! Good luck!

I still have the original board and one day hope to fix it! I was looking for the quick fix, just to get it playing!

I don't have that much experience, so hopefully someone else will chime in here, all I can tell you was mine was caused by the high voltage section of my power supply. Hope someone else has a answer for you!