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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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Any comments? Samsung TV
Samsung TV Model TXK2554 - Chassis KS2A
Problem with the set is that it had a dark picture (low Screen Voltage). After trying to adjust the screen voltage on the flyback I lost the screen voltage altogether. Disconnecting the wire from the CRT board and measuring the voltage direct from the flyback gives 0 volts. So I figure that the flyback is bad... but another technician told me he had a similar problem once and just barely adjusting the screen voltage on the flyback caused the picture tube to go to a blue screen. CRT was shorted. The set I'm into, when pressing the power button, turns on for about 10 seconds and then turns off, but is not in shutdown. I can turn it right back on without disconnecting it. I measured the power supply, checks OK. High voltage comes up, looks normal. Does anybody have experience with this set? Is the CRT causing the flyback to self-destruct? Is it worthwhile replacing the flyback? |
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