High Def Forum - Your High Definition Community & High Definition Resource

Go Back   High Def Forum - Your High Definition Community & High Definition Resource >
Rules HDTV Forum Gallery LINK TO US! RSS - High Def Forum AddThis Feed Button AddThis Social Bookmark Button Groups

Flat-Panel TVs Plasma, LCD

Panasonic new twist to 7 blinks

Reply
AddThis Social Bookmark Button
 
Thread Tools
Old 06-19-2017, 04:40 PM   #1  
What is HD?
Thread Starter
 

Join Date: Nov 2006
Posts: 1
Default Panasonic new twist to 7 blinks

I have it then I don't.
I fixed this TH-42PZ77U once, replacing 16 FETs not under a heat sink. ONE was shorted. It worked for about 4 months with very little use - vacation home. Then went out again.
I found one bad FET and replaced that. It worked a few hours and died. After being unplugged for a while it came back to life. Then repeated its on again off again operation. If I turn it off/on a couple of times it will probably die with 7 blinks. It seems to try to come on with a burst of sound and a flash of picture, then off. It was off a couple hours ago. Right now it is working perfectly. I don't find any components getting unreasonably warm/hot.
I tried replacing the SC board with one from Ebay. Unfortunately, that one was bad to the point of smoking. So I replaced the old board and the symptoms are as they were.
All the troubleshooting I did points to the SC board, but it is intermittent.

Anyone had an issue like this?

Any ideas to tracking this down?
ruggb is offline   Reply With Quote
Old 09-24-2017, 08:07 PM   #2  
High Definition is the definition of life.
 

Join Date: Aug 2013
Posts: 162
Default

If your TV comes on and stays on, one of the reasons for that is the screws which hold s the board need to be replaced. Any time we ordered that board from Panasonic, they sent us set of new screws. You may have something else with your TV, but I would replace those screws, jut to eliminate a possible problem there.
rprman is offline   Reply With Quote
Sponsored Links
Go Back   High Def Forum - Your High Definition Community & High Definition Resource >
AddThis Social Bookmark Button
Reply

Thread Tools

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



All times are GMT -6. The time now is 11:08 AM.



Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2004 - 2018, MH Sub I, LLC dba Internet Brands