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

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No Signal from cable setting.

When I turn on my tv,the cable will work for about two minutes. I can hear a click like a switch turning off,then the screen will go black and say No Signal. After that the screen will go fuzzy for a bit and then turn back to black and No Signal. I checked the Cable wire from the board to where you hook the cable in the back, and all connections are clean and tight.

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  • waznthanes Feb 10, 2009

    Its,actually a coax cable,sorry should have specified. I did recheck the coax with my old tv just to make sure that I had not damaged a connector and it worked fine.

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Check settings on your source...make sure you are not plugging into a DVI/HDMI port on your TV unless you are in fact converting from DVI to HDMI (there a connector to buy) if thats not it replace the cable with a different one. There are several varities of HDMI cable and the signal is faster as you increase in price normally. I have Monster cables that work Perfectly....I would also check TV settings on the port you are plugging into and try a different one to see if the result is the same. If the result is the same you may have a bad source. Always rule out the cable too.

Posted on Feb 10, 2009

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2) A multimeter (to measure the DC voltage levels on the TV Set)

 

3) An oscilloscope (to measuer the AC voltage and signal levels in the TV set and compair them to the values in the schematic)

 

4) A signal generator (to generate a reference signal for troubleshooting)

 

I hope this helps,

 

Shuttle83

 

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