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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Trinitron monitor with yellow tint
Hi,
I've got a 17" sony trinitron which developed a yellow tint when i switched it on this morning. A white test image appears white for the first inch or so from the left edge of the screen, but distinctly yellow for the rest. Also, if i display a test image with thick black and white vertical bars, each of the white bars will also be 'pure white' for the leftmost inch or so, but yellowed from there on in, so it looks like it's okay for the first 'x' amount of time after turning the gun on each time. Does anyone have any ideas what might be causing this, or where i should start with diagnosing the problem? Martin. |
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I would put up a grey scale test pattern, and use a scope to trace out
the video drive circuits to see where the problem is occurring. -- Jerry G. ====== "Martin Bonner" wrote in message om... Hi, I've got a 17" sony trinitron which developed a yellow tint when i switched it on this morning. A white test image appears white for the first inch or so from the left edge of the screen, but distinctly yellow for the rest. Also, if i display a test image with thick black and white vertical bars, each of the white bars will also be 'pure white' for the leftmost inch or so, but yellowed from there on in, so it looks like it's okay for the first 'x' amount of time after turning the gun on each time. Does anyone have any ideas what might be causing this, or where i should start with diagnosing the problem? Martin. |
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