Re: TC-P55GT30; test SU/SD board procedure
Could it be possible that the ribbon cable is damaged. This is that cable that is difficult to get to as it is positioned behind the volume controller. I did make several attempts at reseating this before finally removing that part to get better access. If I had damaged the cable would the lines be the result, or are horizontal lines always caused by poorly seated ribbon cables?
Logan_c
Member
Last Activity: 04-02-2017, 09:26 PM
Joined: 09-12-2016
Location: Logan, UT
-
Re: TC-P55GT30; test SU/SD board procedure
Can it be assumed that there are 1080 horizontal lines on the panel, and I can then count up how many lines from the bottom to know exactly which ribbon cable is at fault?
If there are no shorts can it be assumed that the issue is soley not being seated properly, or could there be some other issue?Leave a comment:
-
Re: TC-P55GT30; test SU/SD board procedure
I got my SC board back from being repaired and the good news is that I have a picture. However I have two black horizontal lines that seem to stem from the 2nd from the bottom ribbon cable.
Those 10 ribbon cables are very finicky to insert and seat properly and many times I would have many, many black lines, then I would reset the cable and sometimes more black lines, sometimes less. Eventually I reset enough ribbons that I had just the two black lines left, both very near each other. I retested the SD board, running my...Leave a comment:
-
Re: TC-P55GT30; test SU/SD board procedure
tw2005,
It was the top two chips indeed! I work with electronic repair techs as part of what I do, so they did the replacement.
Because I had attempted a repair with a shopjimmy kit on my SC board, and it was unsuccessful, I sent it off to someone for a repair, plus an additional charge because it no longer had the original components. The shopjimmy kit had a bunch of diodes, IGBTs and an IC or two for the SC board and those were different than the original components. I bet there were other bad parts on the SC...Last edited by Logan_c; 03-10-2017, 09:01 PM.Leave a comment:
-
TC-P55GT30; test SU/SD board procedure
I am getting my SC board repaired, however I would like to know the procedure to test the SU/SD buffer boards so that I don't end up frying the SC board.
I did the continuity short test down all 10 (5 ribbon connectors per board) on both sides, and originally I had a short (replaced the IC601/2), and since then I no longer get a short when I do the same test, however is there more/other test I should do on those buffer boards? -
TNPA5335 7 blinks continues after "fix"
I received a repair kit for the TNPA5335BA board and while I don't have the skills I have a buddy who does. The kit ([url]https://www.shopjimmy.com/panasonic-...tc-p55gt30.htm[/url]) I ordered from shopjimmy and all the parts were installed. However Q621-623 are the original 30F131 on the SC.
After the repair I am still getting 7 blinks.
I have pulled the 3 boards out and when I ohm out the replacement FGB20N60SFD on Q401-Q403 (measuring the outer legs) I get about 47 ohms. I also get the same on Q421-Q423, also the Fairchild replacements.
This is... -
Re: 55 inch Plasma Viera (VIERA TC-P55GT30) not turning on. 7 blinking red lights.
I received a repair kit for the TNPA5335BA board and while I don't have the skills I have a buddy who does. The kit ([url]https://www.shopjimmy.com/panasonic-tnpa5335ba-sc-board-component-repair-kit-for-tc-p55gt30.htm[/url]) I ordered from shopjimmy and all the parts were installed. However Q621-623 are the original 30F131 on the SC.
After the repair I am still getting 7 blinks.
I have pulled the 3 boards out and when I ohm out the replacement FGB20N60SFD on Q401-Q403 (measuring...Last edited by Logan_c; 12-05-2016, 05:13 PM.Leave a comment:
-
Re: 55 inch Plasma Viera (VIERA TC-P55GT30) not turning on. 7 blinking red lights.
Moreno83,
Thank you!
Can I test the SU/SD board without the SC board being out of the TV?Leave a comment:
-
Re: 55 inch Plasma Viera (VIERA TC-P55GT30) not turning on. 7 blinking red lights.
I think I need a little help with knowing if these parts are bad. I have a multimeter, but I'' not sure what I should be testing (which legs) and what a good or bad measurement would be.
Also, can I test the SU and SD boards with the SC board completely removed from the set? If so, what should in be doing. I am not a EE, so I'd appreciate a more step by step help.
Finally, with the SC board removed I have tested some of the 3013F1 chips and some measure around 46kohm and others...Leave a comment:
-
Re: 55 inch Plasma Viera (VIERA TC-P55GT30) not turning on. 7 blinking red lights.
I have a 55GT30 that has the 7 blink problem. I have removed the TNPA5335 SC board.
Can I power up the set and verify that the problem is isolated to the SC board by observing if the power LED blinks, or do I need to reinsert the board?
If I can test the SU/SD board with the SC board removed, do I only nee dto jumper SC50, then power the TV up?Leave a comment:
-
Re: New Members - please post your introductions here
Hello,
I came across this forum hoping to get some help on my Panasonic plasma. It's a great set and it seems that with some help, I should be able to get this working again.Leave a comment:
No activity results to display
Leave a comment: