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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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TV Missing color diagnosis
Been working on this 29" TV and cannot work out why the voltage on the
one of the driver transistors is low. Drive transistors located on the CRT neck board. Blue =120VDC Green =195VDC Red =195VDC Green does show up on the screen but very dull. Red/magenta hue. Am i correct to say that the blue it under driven causing the complementary color to produce the hue. Or are the other two guns over driven???? Since there is green am i to assume there is nothing wrong with the RGB IC and it is still just a driver circuit problem Where to diagnose from next??? Just stuck on this cos never come across it before. Thanks TEX |
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