72Demon
Active member
I am hoping someone can help me with a non-working Sinistar I bought. It will power on, and originally showed a darkish blue screen with about 10 vertical lines going down the middle of the screen, no sound, will not go into test mode, will not take credits. I did some research and found a similar problem on another old forum thread where an owner of Sinistar brought his one out of storage and had the same looking screen (sorry I do not have a picture of that screen). It said to check the voltages at the 4116 ram and his was too low. He changed out the P/S and all 4116 ram. After that his worked. I checked my voltages at the 4116 ram and mine was to low: 11.08, 4.02, -4.18. I replaced my p/s with a switcher & adapter and all the 4116 ram. Checked voltages and they were still low. I adjusted the switch p/s to approx 12.02, 5.05, and -5.12. Now I have the attached picture on the screen. Still does not go to test mode, does not enter credits, etc. At one point It did make two beeps. But would not do it again if I turned it on or off or let it run for awhile. The boards look good, and I do not see any damage caused by the batteries. They were replaced at some point. Does anyone know what I should check next or what would be causing this screen. I appreciate any help you can offer.
