Silntdoogood

Erm...I have yet to find a cause. I recently got my hands on a copy of the service manual. Now I know what all the little unmarked switches & jumpers do. Just today I found the volume controller. Probably inprobable, but the volume may be turned down. I found the knob initially, but it was seized in place. Mr. Benway (on youtube) was kind enough to give me an annotation at the end of a video today. This is shining a bit of light on the video I had up in front of the community of retro gamers he has gathered. I've gotten some new suggestions from them I will have to try. Thus far, all efforts have been unsuccessful.

Thanks for the tip! Also, I have published a video on the query, for future reference to this post. http://www.youtube.com/watch?v=cCJYJZ73tJY

Probably, but I want to be sure that it is a screen problem before I sink money into it, since there is also no audio.

I've been browsing the forums for well over a year, but I'm a noob to posting, this is my first. In my travels stumbled across a 1986 centipede arcade cabinet. It's in rough shape, the power unit looks like a piece of machinery from WWII(that has been outside since then). I went over the wiring so it didn't blow up in our face when we plugged it in, it looked alright. The keys are MIA, so we are servicing it through the coin hopper door in the front because the lock there is broken. It has a basic instruction sheet, but there is no "book" manual, which the sheet alludes to existing. We were messing with it for about an hour. I tried fussing with switches & jumpers until I found a sheet of paper in the bottom under some cigarette buts that says "out of order". I guess it was dead by the time these owners got it. I thought at first it was a dead screen tube, because the system lights, and you can hear the high pitched CRT whine, but we also have no audio. I tried some of the screen and audio tests, nothing responded. None of the fuses are blown, every thing seems to be on. The system board seems to be fine(fine on the grounds the red LED indicator light lit, and there are no melted points, or scorch marks). I checked the connections to the board, and all seem to be fine. I have some pictures, I can link on request. If anyone has any idea of why I have no sound or video, I'd appreciate the advice. I'd prefer to not get "your system board is dead, buy a new one". It would appear there are Red, Yellow, Blue and Green wires going into the actual tube, so I don't think I can test the screen with anything I have, but is there is a simple way, I'd love to know how. The screen has words burned into it, but the screen in mounted portrait, and the words are burned in landscape, so I think it's on it's second screen.