Some times my tv screen goes dim (black) then back to normal, then turns off. If I turn back on then some times it work fine, sometimes blue/green light flash and turn off or some times dim and back to normal. Please help me.
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Re: Sony KP-51hw40 goes dim and turn off
Unless you know how to solder and where to solder you need to take your set to a repair shop ,however if you do know both of these things to do solder around Flyback Transfomer pins.
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Most of the time it is due to a bad CRT. You have three of them in this set and if you do one, I would do them all so there would not be a color imbalance. The Cost of repairing the set would be too great to consider. I would estimate the cost of 900.00 in parts alone. Plus Sony does not have the CRT assemblies to send out. You must remove them from the unit and send them to Sony so they can mount new CRTs on the Optical Coupler. I would price a new set and let this one go.