Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
I am still thinking A board. Do you have any more thoughts?
I am still thinking A board. Do you have any more thoughts?
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
I'm thinking A board, but I'm only about 80% sure.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.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
thanks for all the help Tom. I ordered the A board for $18.99 on ebay. Hopefully that is what I need. I am at the limit of my knowledge, so it is worth the risk. I will notify this post when I get the board if it works or not.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
$19 is damn cheap for an A board!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.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
Hard to believe but probably this guy, has some real bargains at times. Must depend on the old supply and demand.
Must have a few to clear and they'd be new sets transit damage too.
http://www.ebay.com/itm/PANASONIC-TC...item27d633e3fbComment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
Got the A board in today and still the same problem. the screen lights up and then goes into shut down with 8 blinks. Does anyone have any thoughts as to what I could look for at this point?Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
I don't really know, can you try with your old SS board in case new one is bad? Very hard to tell without a scope to be sure.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.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
Yeah, I tried the new A board with the original SS board. Same thing. Going off the service manual you posted earlier, I have a bad panel. I trouble shot the SD/SU board by following what was in that manual and it seems fine. This all was a result of a power surge. I guess it could have knocked the panel out. I was just hoping for something easier. I will just part out the rest of the boards.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
How long does the panel light up for? Is it a normal display or is it simply a quick flash and shutdown?Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
I really doubt a power surge can kill a panel. Bad electrode structure, due to dirt or debris, or broken ffc maybe, but not a power surge.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.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
The pic flashes on for less than a second and then goes into 8 flash mode. I didn't think a surge could cause a panel to go bad either, but I'm out of answers. I am still open to suggestions though.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
You don't have a scope?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.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
No, I don't have a scope.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
According to the manual, the C3 board could also cause an 8 blink. It doesn't really say how to troubleshoot that board though.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
Check the +3.3V and Vda on it. Vda should be around 55V.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.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
slide for what it's worthAttached FilesComment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
I have 3.3 v on all three C boards when the Tv comes on and then they all go to 0v when it goes into shutdown and starts the 8 flashes. Where is the Vda?Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
Do you see the little green SMD resistors? Vda can be tested on either end of those.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.Comment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
Thanks, I have 58 VDC when the tv starts up and it drops to 39 VDC when it goes into shutdown. That is on the C3 boardComment
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Re: Panasonic TC-50PU54 8 blinks picture flashes then dead
Seems like there is no short there.
8 blink panel failure is only caused by:
- Shorted 3.3V/Vda on C board
- Open SS FFC
Neither of which you have determined to be bad.
I really doubt it is the panel but I don't know what else to suggest, it is very hard to check these things without having a scope.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.Comment
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Hello! yes I know there is already lots of information about this issue. I have a Panasonic TC-P55ST50 that originally displayed an 8-blink error code. Following the troubleshooting flowchart, I ended up replacing the SS board. However, even after replacing it, the issue persists. The TV turns on and stays on without displaying an image, and continuity is confirmed on all connectors. What am I missing here🤔?
Ok Im a mechanical engineer ...but I thought I was able to follow a rather simple flowchart for electric troubleshooting 😂.
TV Model: Panasonic TC-P55ST50
...11-20-2024, 08:52 PM -
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... -
Hello!
I recently got an old VHS player from Panasonic and just for fun I want to try to repair this device. It is an AG-1000B portable VHS player from 1990 and it has a problem with picture quality in playback mode.
Picture in playback mode is very noisy and often loses sync but the still images are nearly perfect.
I want to know, is this something that could be solved by recapping or is the video head likely gone?
Also, what mechanism is this?
Any feedback is appreciated!...05-06-2024, 07:16 AM -
Hi all
While I have quite a decent background in electrical & electronic troubleshooting & repairs, this is my first time stripping down an LCD TV for repair.... I have inherited a 3yr old Panasonic LCD which has a picture, but it is quite dark (too dark to be watchable - but still quite easy to see; I didnt need a torch to see it).
I started by checking and trying to adjust all of the picture and backlighting levels, but that made little to no difference. I also did a factory reset.
From there I envisaged that the backlighting wasn't working, however... -
Hello all ~
I’m working on this Samsung 60” LED and purchased a new main board a couple of days ago that did not fix the 5 blink issue. The original main board’s HDMI ports (all 4 of them) failed to work and no amount of reflow remedied that.
This 5 red light blink code on the front panel LED is followed (about 15-20 seconds afterward) by an automatic reboot, and results in 5 more red light blinks. Then the entire cycle repeats itself indefinitely.
No picture. No sound.
I tested all the voltages coming out of the power supply...
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