Author Topic: monitor problems (Read 7770 times)

bartkoski · « **on:** May 21, 2014, 11:02:53 PM »

i tried changing a game and got these lines on the screen, they look like alien writing.
i tried putting old games and i tried clearing with chip in slot 10 and nothing changed.
does anyone know what i did and how to fix it

dextrose42 · « **Reply #1 on:** May 22, 2014, 09:15:28 AM »

When you do the saferam clear, is the text legible?

Badbaud · « **Reply #2 on:** May 22, 2014, 12:22:38 PM »

Check the input connections on the monitor.

bartkoski · « **Reply #3 on:** May 22, 2014, 10:45:23 PM »

the text is the same.
i took the board out and put it in a different GM and got the same results.

Badbaud · « **Reply #4 on:** May 22, 2014, 11:03:44 PM »

Remove all of the game chips from the board and try them one at a time, you may find a game chip that is defective or is programmed for a wider, or narrower, monitor size (depending on the size of your monitor).

Re-seat your graphics chips they are to the right of the game chip sockets.

Buzz · « **Reply #5 on:** May 22, 2014, 11:39:58 PM »

bartkoski What make and model machine are we talking about ??

Badbaud · « **Reply #6 on:** May 23, 2014, 12:53:32 AM »

A clear chip in slot 10 implies it is a Game Maker?

bartkoski · « **Reply #7 on:** May 23, 2014, 10:18:38 AM »

it is a 1997 multi touch screen with the v7000 board.
i tried taking all games out and doing a safe ram with dip switch 7 & 8 on, then all switched on, i switched monitors, i changed battery,its 3.6v
so i took out the graphics chips and put them back in, still same block images.

Tacman · « **Reply #8 on:** May 23, 2014, 02:09:20 PM »

It seems you have another GM to use as a tester, I would switch out the mains and graphics chips, or burn new ones and try them in the board you are having problems with. It looks like corrupted/damaged programming on the eproms.

Dan (tacman)

Also, I don't mean to be a smart*$$, but the game should be off prior to removing the MPU board.

bartkoski · « **Reply #9 on:** May 23, 2014, 03:25:16 PM »

better a smart ass than a dumb ass, the eprom's are games right if so i tried that

Badbaud · « **Reply #10 on:** May 23, 2014, 03:55:51 PM »

Do you have another machine you can plug the monitor into?

Tacman · « **Reply #11 on:** May 23, 2014, 07:17:47 PM »

Quote

better a smart ass than a dumb ass, the eprom's are games right if so i tried that

If you plugged the MPU in another machine and got the same results as listed in your prior post, then the problem is within the MPU. Now you have to see if its a software or hardware problem. The starting point is your Mains and Graphics eproms. You will have to switch these out with M&G's from another working Gamemaker or burn new chips from a working file. Then see if the problem is the same or fixed.

bartkoski · « **Reply #12 on:** May 24, 2014, 01:53:35 AM »

ok first i did M0 and M1 then G0 and G1. the problem one i'll call GM1 still the same scrambled words.and GM2 is working fine. is there a way to reset to factory condition.

bartkoski · « **Reply #13 on:** May 26, 2014, 09:50:26 AM »

should i do a safe ram clear after i switch the M&G's

Badbaud · « **Reply #14 on:** May 26, 2014, 05:50:35 PM »

bartkoski · « **Reply #15 on:** May 26, 2014, 11:15:43 PM »

no luck

Badbaud · « **Reply #16 on:** May 26, 2014, 11:22:27 PM »

Then it is probably some soldered in chip on your board that went bad.

bartkoski · « **Reply #17 on:** May 27, 2014, 07:27:44 AM »

do you know of a place i can send it or is it something i can be talked through?

Badbaud · « **Reply #18 on:** May 27, 2014, 09:03:37 AM »

Call Larry 702-363-9998 11AM to 5PM PST.

bartkoski · « **Reply #19 on:** May 29, 2014, 03:35:33 PM »

thank you so very much for your time ill let you know how it went,
while i have you here do you know how to fix a two inch black line going down the center of one of my other GM monitors

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Author Topic: monitor problems (Read 7770 times)