U2000 monitor issue... intermittently dropping greens
I have a question about a U2000 monitor.
Short version of issue...
This chassis was completely bulled-proofed by Chad @ Arcadecup a year ago. Now it is intermittently (but becoming more frequent) dropping all greens. I've checked the Jamma harness and the input pins on the chassis and they look okay. I have very little knowledge of working with monitors beyond a basic cap kit / replacing a flyback so I have no clue where to look next. Please help.
Longer version of issue...
This chassis is one that Chad @ Arcadecup fixed/rebuilt/bulletproofed about a year ago. Over the holidays as my brother in law was playing a soccer game on that cab the green grass turned completely black. Basically all of the greens dropped out of the picture. The first time this happened it lasted for about 5 minutes then went back to normal for a bit. It happened a few more times throughout the night with the final time happening for about 20 minutes before it went back. Since then when I turn that cab on (the one my Gamebox 450-in-1 is in) sometimes the monitor is fine for the duration but other times it switches from having a red hue (no greens) to being fine. In fact tonight I turned the cab on and it came up messed up and never went back to normal. I have checked out the wiring on the Jamma harness as well as at the input pins on the chassis and see no issues. Beyond that I'm stuck.
I hate monitors... hate working on them... hate trouble shooting them. But a lot of this hatred probably comes from my lack of knowledge about them. I'm really hoping this isn't a tube issue because I don't have the time/energy to search for a suitable 25" tube for a swap. If it really came down to it I'd probably sell the chassis or entire monitor for what I paid Chad for the repair and put that towards a new monitor for my game. Hell, I'd even consider going LCD for this cab since the games aren't of the classic era... and I hate working on CRT's.
Any pointers on where I should start to look would be awesome. I wrote Chad about the issues and he said it's probably either in the neckboard or a short in the tube. Situation just sucks because it's the one game my kids really love playing and the beautiful monitor is acting all crappy. Maybe that's why I'm leaning more towards pins recently... no monitors to deal with.
I have a question about a U2000 monitor.
Short version of issue...
This chassis was completely bulled-proofed by Chad @ Arcadecup a year ago. Now it is intermittently (but becoming more frequent) dropping all greens. I've checked the Jamma harness and the input pins on the chassis and they look okay. I have very little knowledge of working with monitors beyond a basic cap kit / replacing a flyback so I have no clue where to look next. Please help.
Longer version of issue...
This chassis is one that Chad @ Arcadecup fixed/rebuilt/bulletproofed about a year ago. Over the holidays as my brother in law was playing a soccer game on that cab the green grass turned completely black. Basically all of the greens dropped out of the picture. The first time this happened it lasted for about 5 minutes then went back to normal for a bit. It happened a few more times throughout the night with the final time happening for about 20 minutes before it went back. Since then when I turn that cab on (the one my Gamebox 450-in-1 is in) sometimes the monitor is fine for the duration but other times it switches from having a red hue (no greens) to being fine. In fact tonight I turned the cab on and it came up messed up and never went back to normal. I have checked out the wiring on the Jamma harness as well as at the input pins on the chassis and see no issues. Beyond that I'm stuck.
I hate monitors... hate working on them... hate trouble shooting them. But a lot of this hatred probably comes from my lack of knowledge about them. I'm really hoping this isn't a tube issue because I don't have the time/energy to search for a suitable 25" tube for a swap. If it really came down to it I'd probably sell the chassis or entire monitor for what I paid Chad for the repair and put that towards a new monitor for my game. Hell, I'd even consider going LCD for this cab since the games aren't of the classic era... and I hate working on CRT's.
Any pointers on where I should start to look would be awesome. I wrote Chad about the issues and he said it's probably either in the neckboard or a short in the tube. Situation just sucks because it's the one game my kids really love playing and the beautiful monitor is acting all crappy. Maybe that's why I'm leaning more towards pins recently... no monitors to deal with.
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