Question about Panasonic PT-51HX40 51" Rear Projection Television

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TV changes channel on it's own

TV changes the channel (always "up" one channel) at random intervals. No other pattern detected. Does not matter what is being watched (Cable, DVD, etc). When it changes the channel it goes to a different input and screen changes to snow. Have to press tv/video button to get TV back to the correct input (Componant 1). Removed the batteries from all remotes and still get the problem. This started 2 wks ago after repairman came out to change a capacitor ($400) that blew out on one of the boards. Called him and he said the part he fixed would not cause this problem. Starting tonight I get the following code displkayed on the top left of the screen: CHK 0D36D 000000000. Ideas?

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  • Anonymous Dec 19, 2007

    I have the same problem. Began after replacement of the KTD-362-110 convergence correction circuit.

  • Brokenbigtv Apr 14, 2008

    We had the same problem called a repairman and he shook the board now instead of changing inputs the tv set goes out and wont come on for about 5 minutes after doing this about 3 or 4 time it will stay on - what is the fix?



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Check over the powerboard... I am having the same issue and I believe after looking at it briefly tonight that It might be cause by a cold/cracked solder joint..

Slide the board tray out some and back in with a little bump to kinda jar anything loose... Not hard...

You can also remove the Power Board and check each and every connection for solder quality under a Microscope... I am certain it is within this board I just have yet to have time to isolate it completely... Today was the first day I was able to open the Set up myself...


Posted on Jan 24, 2008


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