Question about Sony KP-51HW40 51" Rear Projection Television

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Sony KP51W40 Blue tube flashes

The blue tube flashes a few times before HV shutdown. Im thinking my blue crt is cathode arcing. Was told there are no tubes available for this model.
I will try my old tube rejuvinator on it. maybe I can blow the slivers off the filament. Can any technicians here advise the price and availability on the blue CRT?
I do not have the service manual or the part number.

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  • Paul Tribbey Apr 21, 2008

    Well, It is nice and dry for starters. When I said arcing, I meant between the heater filement and the cathode. It used to be a common problem on straight CRT televisions. I read on here somewhere that this tubelot was a lemon from the beginning.

    Thanks for trying to answer anyway Jamie867.




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I do not think the old tube rejuvenator will do much if the HV is arcing. The CRT it might leaking some coolant or some moisture from it is causing the arcing.
I would suggest to read the info from this website to re-seal it or replace the coolant.
Let me know if you need further assistance.

Posted on Apr 21, 2008

  • Jaime Hernandez Apr 21, 2008

    My apologies Paul for not reading well what you wrote.

    I could send you the service manual later on.

    Let me know if you need it and where to send it to.



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