Tv was on the other day and the screen just went blank. when I unplug then plug it back in I can hear it power-up, but get no response when I try to turn it on. it is out of warranty. have you heard of any similar problems with this tv, and can it be fixed inexpensively by someone who know virtually nothing about electonics.
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first check to see if any power is getting to set. if so then see if your power light is on. i would then proceed to check the power supply and see if there is 160v on the main filter. then go to your horizontal circuits. i advise more than anything for you to have a service tech to do these things for you. write back and tell me your voltages.
Sorry, but you've been had. From what you describe, it sounds like the set is going into high voltage shutdown. It does this if picture tube voltage goes over limits that might cause excess x-ray radiation, and the only way to clear the shutdown is to unplug the set. A number of things might be causing the problem, including a bad picture tube which would exceed the cost of a new TV. Without checking the set myself I couldn't suggest anything specific, and there are few repairs you would be able to try for yourself without the tools and some experience.
The only "solution" to this, I think, is to try to get your money back from the seller as the item was misrepresented, and apply it toward a set you can see working before you buy it.
jdosk-the high pitch noise you hear is generally from the horizontal output being shorted,the horizontal output is usually near the flyback transformer,get a digital multimeter to checkthis part.Let me know I'll try to help. cooltek Feb.16/08
Sounds like it could be H.O.T which stands for horizontal output transistor or a fuse is possible. Another possibility is the FLYBACK transformer. Is there a local repair facility you could take it too? Keep me posted. Have a good day...Jay
This set has a common problem with th main fuse opening for no other apparent reason... One of the few exceptions to my corner-stone statement that a fuse is never the cause only a symptom..
Don't replace it though with the same type grade, use a 6.3a slo-blow gma type - available at Radio Shack... Try that and if everything works you're back in business.. If not we nee to find a cause...