My TV shuts off automatically after sometime. First the picture get squeezed and when whacked on tv it get turns to normal picture. how ever after sometime even whacking doesnt help and the picture and sound is completely gone.
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Re: Phillips 29" TV
Sounds like it has an intermittant connection somewhere which is very
common now a days due to the lead-free solder all the makers went
to. Resolder everything that looks suspicious, especially the
bigger components. It could also be a failure of the flyback
transformer though which often times fail like this.
Hope Ya Fix It.
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Hello, the grey screen could be due to a missing 220Volt source which feeds the color (RBG cathodes)inside the CRT(picture tube). When this happens the beam current inside the CRT goes high in a matter of second, thus triggering the beam current protection circuit(blinking green light)shutting down the TV. Repairing the secondary voltage source is necessary to get the TV working normal, a good technician should be able to repair it for between 80 to 100 dollars parts included, except a picture tube, which could be also the cause of the problem(K-A shorts).
the tv turns on fine,
but after 5 - 30 min or so, "sometimes MORE " the picture all of a sudden go's black. Sound is ok
it is 100% loose contact problem.
1 please check for any connector or print for loose.
2 in signal processor ic there might be loose.
remember there is no component failure.
From what you describe, a solder joint has probably cracked loose in a power supply or deflection circuit, which is quite common. Since you do sometimes see a good picture, all of your major components are fine. Repairing cracked solder joints is a very easy procedure and definately worth fixing on a 32 inch TV. The first 2 digits of the model number indicate the size of the TV.
Symptoms are not related,what you hear is the high voltage turning on and that is normal if it only does it for less than a second,the grainy picture might be intermitant,dont turn it off,when the picture is grainy tap the side of the set to see if it racts and if it does you know you have a loose conection.This could be outside because of a loose ground on tha cable or inside in the tuner.
Your problem is a common one and wht tells me this is when you wack the set. Theres a couple of coils that look like small towers that stand up and would have an L4#### number of some sort. They would be located toward the right side in the middle.. BUT for cryin out loud BE CAREFULL please!!!theres thousands of volts in a tv set. Oh and NO for sure this is not a Picture tube problem Good Luck