Panny th-50pz85u 10 blink trouble - AVS Forum
Forum Jump: 
 
Thread Tools
post #1 of 5 Old 06-14-2009, 02:14 PM - Thread Starter
Newbie
 
Bravesfan54's Avatar
 
Join Date: Jun 2009
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
We bought the Panny about 14 months ago. It has been beautiful until about 1 month ago. It would occasionally fail to come on when either the remote or power button were used to "power up". If the unit was unplugged and left off for a few minutes and then plugged in again it would come on OK. This happened several times and then we left for a couple of weeks. When we came back the TV would not power up at all. We called Panasonic and were given the local authorized service providers name & number. They came out and looked the thing over and declared the "main power board" was bad. They ordered a new board and we waited, and we waited, and we waited some more. They never did find a board and we finally cancelled the order. We did learn the part number for the board (ETX2MM704MGL) and I was able to find and purchase it in about 1 hour. Received it last Friday and installed it today (simple unbolt, remove, place and rebolt). This has resulted in absolutely NO improvement.

What have I done wrong? Lets consider the possibilities:
- the power board is not the problem (I have read here that it might be the video board)
- the new power board is also faulty (not likely)
- I am failing to do something after installing the new board that is necessary (if so, please tell me what to do!!!)
- I should stick to my chosen career and leave the technical work to the professionals (who said the power board was bad!!@#*&^%)

Your insight and help is greatly appreciated!!
Bravesfan54 is offline  
Sponsored Links
Advertisement
 
post #2 of 5 Old 06-14-2009, 03:05 PM
AVS Special Member
 
LarryInRI's Avatar
 
Join Date: Jun 2007
Location: in RI
Posts: 5,265
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Liked: 147
Did you check all the ribbon wire conections when you had the back off? A loose connector can cause the same symotoms as a bad board.

Larry
LarryInRI is offline  
post #3 of 5 Old 06-14-2009, 04:46 PM
AVS Special Member
 
JChin's Avatar
 
Join Date: Oct 2008
Location: Mesquite Tx
Posts: 8,526
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 86 Post(s)
Liked: 132
Try disconnecting (HDMI, comp cables,etc..) all components from the unit and power cord. Then reconnect power cord only, turn the set on and see if it would come on.
Did you purchase an extend warranty?
JChin is offline  
post #4 of 5 Old 05-04-2010, 10:16 AM
Newbie
 
rglover1168's Avatar
 
Join Date: May 2010
Posts: 2
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I didn't see if you figured out what the problem was. I'm facing the same problem. Repair shop says it will cost $601.48 to repair this problem I'm thinking about doing it myself. If anyone has any links to a step by step that would be helpful.

Also does anyone know where I can buy this part because its nowhere to be found. Part # ETX2MM704MGL
rglover1168 is offline  
post #5 of 5 Old 05-05-2010, 08:12 PM
Newbie
 
loconsx's Avatar
 
Join Date: Aug 2008
Posts: 1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked: 10
I found a company that has used power supplies, they sell them for $60.00. I just got mine today and I just noticed that they recommend that a professional install the board because the voltage needs to be adjusted after the install or you could damage something else. There web address is plasmafix.com.

There was another posting from someone that replaced their own power supply, he had a technicians repair manual. Good Luck let me know if you find out how to replace the board.
loconsx is offline  
Reply Plasma Flat Panel Displays

User Tag List

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off