Question about Sony KP-51HW40 51" Rear Projection Television
Hello, tv first had a convergence problem that i fixed just by reading about a small turn left or right and the blue lines were gone.after a couple months i now have the horizontal blue line problem fixed but tv is now flashing blue and then shuts off with the 8 blinks.had a tv repair guy check it out and he said convergence was fine but needs a blue picture tube.how he found this out was he took a screw driver and tapped the tubes ad when he tapped the blue pic tube the screen started flashing blue and he said there is a short in there and it needs to be replaced..Does this sound correct about needing a new blue picture tube just by him tapping it and the screen flashed blue ??? thanks !!
The tech is correct about the internal short inside the blue CRT. There is a way to remove that short by applying a small amount of current to burn the short but that might damage the CRT even more. At this point the CRT needs to be replace.
I will post the instructions on how to remove that short but you will need to have a good regulated power supply and limit the amount of current to 1 to 2 amps.
Posted on Apr 24, 2008
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Posted on Jan 02, 2017
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