Monitor Problem

From: David Rudich <redolphn_at_tidalwave.net>
Date: Wed Aug 04 1999 - 16:01:05 EDT

A few days ago I was playing my Star Wars with the Wells Gardner 6100 monitor in it and the monitor shut off. I decided to install the LV2000 that I had bought and still no monitor but R920 on the HC board blew. I replaced R920 then I realized as I was checking over everything that P101 was off one to the left(or one up). So then, I read the Gregg Woodcock document and in there it said I now had to change Q703, D702 and R711. I changed all of these and still no picture. After talking to Jeff (thanks for your help!!) we found out that I needed to change the chassis transistors that went with P100. I changed those two and the screen finally came on. The only problem was that all the lines were shaking up and down. Then I changed the two on the side of the chassis and I still got the same thing. So now I decided to just change the rest of them and see what happens. Well I noticed that on the monitor chasis the transistor that is in the middle bottom (I think Q102) was a 2N3792 and I thought it was supposed to be a 2N3716 from what I have read. Also I think Q706 which should have been a SN3792 orignally had a 2N3716 in there. So I changed the 2N3792(Q102) to a new 2N3716 that came with my cap kit. Now when I turned it on everything was crystal clear and all the lines were great, but the whole screen was squished up to the top part of the screen and the bottom was just all black. So now I decided to change Q706(With the correct one that it says should be in the manual) and Q705 now with new ones and I got the same thing just picture on the top. This next thing I regret doing since there was a 2N3792 in Q102 originally and and a 2N3716 in Q706 originally and tried going back to that. Well I turned in on and I got a spark which looked like it came over from the deflection area. I turned it off immediately and went back to the way it says in the manual and now when I turned it on in the middle left of the screen there are about 3 short lines and it looks like the whole screen is squished into these couple of short lines. The short lines don't even go half way to the screen. I am sorry for this being so long, but if someone could please help me out that would be great. Thank you very much.

David Rudich
reddolphin@home
410-356-4441
Received on Wed Aug 4 15:02:21 1999

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