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problem in sun GDM 20E20 Monitor

i hv two Sun GDM 20E20 . some time it got the problem when it was running. suddenly red color got off. now the only red and green color comes in screen . in second monitor there is only red color .plz help me wht may be the problem??

i hv checked for cold solder but i hvn' found any cold solder . i gave my monitor for repairing in my city but he couldn't found exact problem in it . he told me there is problem in color processing IC. but i don't know which IC processes the color.

I think tube is ok bcoz i hv changed the board which connected to back of tube. when i interchange the board the problem is also interchanged.

Can any buddy tell me which IC may be faulty

thanx in advance every buddy

Reply to
ankurjasani
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It may not be the chip. You should use a scope and follow the video process path to determine where the failure actually is.

In most of the Sony monitors, there is a main driver IC on the video board that is on the CRT socket. There are also other devices that can cause this type of fault.

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JANA _____

i hv checked for cold solder but i hvn' found any cold solder . i gave my monitor for repairing in my city but he couldn't found exact problem in it . he told me there is problem in color processing IC. but i don't know which IC processes the color.

I think tube is ok bcoz i hv changed the board which connected to back of tube. when i interchange the board the problem is also interchanged.

Can any buddy tell me which IC may be faulty

thanx in advance every buddy

Reply to
JANA

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