Panasonic PT-51HX40 51" Rear Projection Television Logo

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

1 Answer

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?

Posted by Tony Martin on

  • 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?



1 Answer


  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

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


Add Your Answer


Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:


Why does the channel up or down sometimes not work?

It sounds to me like you have a fault in the tuner circuit. I suggest you take it on for service.

Error code SC 352

Error Code Explanation :
ID sensor, pattern edge detect error
The ID sensor pattern edge voltage is
detected to be not 2.5V twice
consecutively during an 800 ms
Posible Causes :
• ID sensor defective
• ID sensor connector defective
• Poor ID sensor connector connection
• I/O board (IOB) defective
• High voltage supply board defective
• Dirty ID sensor
• Defect at the ID sensor pattern
writing area of the drum

Source mode randomly change

The main digital board should be checked and replaced.

Viewsonic HDTV 32" Channel Issue

Might have a bad tuner, try using one of the a/v inputs and an external signal device such as a vcr. Julio [email protected]

Mits WD-52525 random 1-pixel jitter

if you are a profetional replaced all capacitors on FMT and DM board.. or replaced the chassis........

DM and FMT board N/L/A .........

Channel skipping in Sony Rear projection KP-EF41 TV

is the channel flipping always happening at set intervals? Or, just randomly? Try replacing the batteries in the remote. If that doesn't work, start looking for other sources of IR(infrared). In some rare cases, direct sunlight on the TV will get it to do strange things.

Random screen format adjustment!

try blocking the sensor built into the front of the tv. If it cant sence light, it wont change.

Turns off randomly

mine does also does yours click at random times and the screen goes out in small places for a split second?


re- program...................................................
Not finding what you are looking for?


Ask a Question

Usually answered in minutes!

Top Panasonic Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76849 Answers

Jaime Hernandez

Level 3 Expert

2338 Answers

Cindy Wells

Level 3 Expert

6497 Answers

Are you a Panasonic Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides