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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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Toshiba 50A61 Picture shifted up.
This rear projection set is about two years old. Picture suddenly shifted up so that only bottom two/thirds show with upper one/third missing. Bottom third of screen is black. The part I can see has good color and convergence only at center of screen, the rest is progressively worse as you approach the edges. I have repair manual with schematics. The three gun assembly is not loose nor shifted. Mirror is OK also, therefore it is an electronic problem. Any help is appreciated. Thanks, -- franwagner |
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Vertical deflection and/or convergence output circuits. Check the + & -
supplies going to the convergence output devices "franwagner" m wrote in message . com... This rear projection set is about two years old. Picture suddenly shifted up so that only bottom two/thirds show with upper one/third missing. Bottom third of screen is black. The part I can see has good color and convergence only at center of screen, the rest is progressively worse as you approach the edges. I have repair manual with schematics. The three gun assembly is not loose nor shifted. Mirror is OK also, therefore it is an electronic problem. Any help is appreciated. Thanks, -- franwagner |
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