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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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Faulty tv
"Art" wrote in message
... Actually time to turn this one over to the repair shops and stop the dribble!! IMHO That would depend on the OP's desire and resources, would it not? I doubt you know enough to gauge either at this point. Mr. Terrell's suggestion to take the issue to news:sci.electronics.repair is more appropriate under the circumstances, IMHO. Followups set accordingly. "Larry Brasfield" wrote in message ... "Lessie" wrote in message ... When the picture suddenly goes on a t.v., what is it usually due to? Operation of the power switch. I don't think this could be it, as there is sound, hence the power switch must be delivering current. Hmmm. I almost wrote that more symptoms would help narrow the cause a bit. g Are you thinking of fixing a TV? If so, you will be concerned with why yours is broken, not common cases. That said, a common failure is breakdown of the flyback HV winding, a fairly expensive part to replace. Are there cheap generic replacements? What is expensive 10 Pounds or 100 Pounds ? They may have become generic lately. When I was last looking into it. the transformers tended to have so many taps, different output voltages, and primary inductance values, that they were all different. If you really want to diagnose your TV's problem, it would help to describe more of what you can see, especially with different input stimulii if they vary the result. For example, how long after turn-on before the picture "goes". What does "goes" look like? Does it ever come back? Is there a change in the sound emitted? Any odd smells? What can you see when you open the cover and shine a light on the circuit board(s)? Do you have any instruments to apply to the task? Are you willing to purchase the schematic for the set? -- --Larry Brasfield email: Above views may belong only to me. |
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