Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Which buffer ICs failed? tried removing a few failed ones and see if it will fire up with a pic?
Which buffer ICs failed? tried removing a few failed ones and see if it will fire up with a pic?
-
Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search. -
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
I thought I also had this but nope. Found two resistors R521 and R522 open circuit near IC521. I initially had IC521 shorted which was replaced. replaced the resistors but still getting a short flash and then 6 blinks.Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Buffers are in. (thanks for Overnight express) Perfect,Perfect Perfect. Fantastic image and SC is now silent with a load .
10500 Hrs
Now have another TNPA4782 to repair. A lot learnt here as far as what parts you can get away with , with some lateral thinking and cross relating knowledge of the 5081 boards.
Last edited by tw2005; 04-08-2015, 07:26 PM.Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Everything I found shorted so far:
Q441 - 45G127 replaced with a 45G128
IC521 - replaced with the 1737
Q551
Q661 - RJP6065 replaced with RJP63F3
Q601 - RJP6026
Q701
Q702
IC773
D608
D618
R521
R522
I also checked all the parts that you had shorted or suspect and none seemed shorted, but I replaced some of them just in case.Last edited by Glitcher; 04-08-2015, 07:54 PM.Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Just having a look at this spare dead 4782AF, straight away I see D618 is burnt. I'm starting to think i missed this as it's in the shadows of the heatsink .
What's unusual is this too being revision AF , however it has a Vset cct.n So i have one which has and another not both AF. This board does look a little older so maybe mine was the last of a production change. Both TVs are P50G15AComment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Mine is the AB model, I got from a TCP50S1. I did the initial replacing parts and heard a pop and burnt smell which turned out to be D618, and also leading to D608 blowing ,Realizing I missed IC521 and Q551. after replacing everything again, 7 blinks turned to 6 blinks.
If the SC is repaired and with SC50 jumpered and SC plugged in, the set should stay on solid and no blinks correct?Last edited by Glitcher; 04-08-2015, 08:04 PM.Comment
-
Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Have you rechecked the buffers yet? I'd check Vfo at the connector to Vfg resistanceComment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
So far I also replaced Q818 2sk3018 and only IC771 78L05, IC724 and IC725 seem good. I checked about every large smd diode I can find and nothing seem shorted. Q441 was 45G127 (the one on the right heatsink). that one didn't have a diode in front of it. measuring the TO-220 diodes I'm getting 0.287 and OL.Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Ok, well i'm only just starting on this but is your Q451 shorted G-E ? I'm finding you have to be 100% thorough nearly skipped over that one.
For transistors so far, Q661,601,441,451,D618,
Also, can you look at R869, R613 47K near D618. 613 is burnt and I can't get a stable reading suggesting these may have an issue but have not looked at the schematic yetComment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
my Q451 measures 0.674 and OL on G-E on diode mode. both my R869 and R613 slowly raises in resistance until around 42.8k ohms.Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Q701,702,818 no shorts but I'm replacing .
I'm getting similar on those resistors. I may remove from cct and check since 1 is burnt at the solder.
Well with mine at this stage I'm thinking
Q601,661,441,451, 701,702,818,551
D618,
IC771,773,464,465(all of the Vcc lines are tied so I do not trust these inverters)
IC521Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Pins 3-5 resistance on any of these IC773,464,465. What resistance do you have?Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
With that zener D608 what do you get in diode mode both directions and what resistance both directions?Comment
-
Re: TH-P50G15A - 6 Blinks- Bad TNPA4782
Forgot to mention I also replaced IC773, 464, and 465 to be safe. For D806 i have 0.758 and OL in diode mode, 9.75k resistance in both directionsComment
-
I recently got my hands on a 60" Panasonic P60ZT60 plasma tv (european model) that has some strange issues along with an 8 blink code.
It know this tv is getting old but it was once considered one of the best plasmas ever made, and i think it is still holds on to that even by todays standards.
So, long story short. When i first got the tv it had a very bright washed out picture with very raised blacks in all picture modes and i couldn't find the cause in the picture setting menus.
After doing a factory reset this problem was gone and the picture was back to...01-06-2025, 06:02 AM -
I write this to maybe help another with this TV.
So I aquired this TV a 2023 model. It started the 2 blink reboot problem which indicates bad panel. It was still under warranty and the repair man came by.
The Samsung repairman brought a brand new panel and switched my original boards to the new panel. The new panel then had the 2 blink error code. The repair guy said he has seen this and the MAIN board on this model will cause the 2 blink. He then replaced the main/power board (they are both connected) and put it back onto my original panel. Voila it worked.
...03-18-2024, 10:24 PM -
Hi everyone,
I'm new here and trying to repair my Panasonic TX-P50V10E plasma TV, which is currently showing the 6 red blink error code.
Just for context: I'm used to building PCs and installing modchips in old consoles, but this is my first time trying to fix a TV. I'm French, and while my English is okay, I'm using ChatGPT to help translate and clarify my messages as much as possible â so please forgive any odd phrasing.
I'm also not very experienced with using a multimeter, but I'm very motivated and ready to follow instructions carefully and report... -
Bought this TV used not working, panel flashed briefly on power up and it was blinking 8 times, a quick look on SS board revealed a common fault on the 3uF 250V capacitors, C201 to C205 (C1620X in the service manual), the solder joints were all cracked, C201 and C205 pins were darkened and some sparking had occurred on them, C201 was split open and clearly overheated in its last hours, replaced that one and resoldered the others, 8 blinks fixed.
Also the previous owner broke the antenna connector by taking the TV out of the wall mount forgetting to unplug it, I desoldered the tuner... -
đđģI recently got a tx-pr42gt30, I bought it in non-working condition. When I opened it, I saw that all the transistors and diodes had been removed from the tnpa5330, and several microcircuits were in poor condition, so I decided not to try to repair it. Instead, I bought another tnpa 5330 (also AB), which was already repaired (according to the seller, the board was repaired and worked before the screen was damaged), transistors were also changed on it, but Chinese copies were installed (there is no round hole in the middle, the inscription is easily erased) and a pair of transistors that...07-19-2025, 07:53 AM
Comment