Question about Projection Televisions

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I have a Sanyo TV model HT30744. The problem is that there is sound but no picture when the TV is turned on. After about 10-15 minutes a picture will appear. Distorted at first, the picture gradually improves until the picture appears normal. The picture will sometimes go blank at times and then return to normal. Is this a problem that can be fixed at a reasonable cost? The TV is about 3.5 years old. Thank you Dale Mrotek at dmrotek@wi.rr.com

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  • dmrotek Aug 28, 2008

    This TV has a picture tube, it is NOT a projection TV

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Sir/madam,

It sounds that a voltage regulator problem and weak picture tube.

check out it's working properly or not?

thanks
good luck

Posted on Aug 28, 2008

  • Asfiya Ahamed
    Asfiya Ahamed Aug 28, 2008

    Dear Sir/madam,

    Also check these things....

    First check: High voltage flyback transformer. If you have sound, but no picture, this is probably the culprit.



    Second: The horizontal deflection amplifier.



    Third check: Main power supply; look for bad rectifier bridge and/or bad electrolytic filter capacitors.



    Hope this helps.




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This problem could be fixed by you with a few tools and you wanting to take it apart. if you want some one to do it for you i would say the tv isnt worth repairing.
good luck
paul

Posted on Aug 28, 2008

  • paul erickson
    paul erickson Aug 28, 2008

    i just checked the specs on your tv. the labor rate is so high anymore that it realy is tough to have someone repair this tv. and yes there has been changes in the new tv's since you bought this one. you spend $200 on it and for a little more you can get a new on with warranty.

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  • Projection T... Master
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Yes, its still reasonable to have it fix , because the tv will be working fine after they replace probably the tube.

Hope that helps.........

Posted on Aug 28, 2008

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