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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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#1
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tv screen lines at top
My Sony Trinitron has lines across the top 1/4 of the screen. It looks as
though you are viewing that portion through rippled glass. Can anyone tell me what is wrong? Thanks a lot. John |
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#2
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tv screen lines at top
JohnH wrote:
My Sony Trinitron has lines across the top 1/4 of the screen. It looks as though you are viewing that portion through rippled glass. Can anyone tell me what is wrong? Thanks a lot. John Probably bad capacitor(s) in the vertical circuit - though this is less common on Sony than some other brands. The specific symptom you state may be caused by a "boost" capacitor being bad. If so, the vertical output IC is running really HOT and will fail. Also, there is a chance of burning the tube at the top where the lines are. This is permanent damage. so DON'T USE THE SET in this condition . Get it fixed. Or replace it, your choice. Mark Z. |
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