The tv won’t turn on. Blinks red.

Question

Panasonic plasma 50 inch tv

A 50-inch display has a diagonal measurement (from upper left-hand corner to lower right-hand corner) of 50 inches.

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....... @imacpowpcintm

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게시일: 2023년 6월 10일

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The tv won’t turn on. Blinks red.

One night while using the tv it popped loudly like if a capacitor exploded but no smoke or odd smells came out. Then I’ve tried to turn it on again but the tv blinked red 7 times after trying the standard startup sequence. I heard the relays clicking but no fan spinning, most forums online suggest a complete failure of the sc board, unfortunately I can’t take a look at the tv by removing the rear panel if I don’t know with enough answers what could be the actual fault.

Tv model: TX-P55VT60T

Ps: idk if this could help but it popped while using it with the touch pen and it was an identical pop as a firecracker or a bad capacitor but no signs of an exploded capacitors have been seen.

Anyway have a nice day and thanks for your help ^_^

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oldturkey03 @oldturkey03

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@imacpowpcintm the problem is going to be that we will need to see the boards etc. to provide answers :-) Remove the back cover and take some GOOD pictures of all of your boards. Post those with your Question. That way we can see waht you see. 7 blinks on this model is commonly caused by

Missing Vsus. ( Open or loose connection between connectors SC2(SN2)-P2. )

Abnormality of the scan circuit output, the 15V_F, Vad, and

Vscn circuit.

Open or loose Connection between the SC board and the SU/SD board (SC41, SC42, SC46)

Primary suspect is teh SU/SD board.

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Alr thanks and yes this also confirms my principals suspect’s of the faults. Unfortunately it will took a while until I can found someone that could help me to carefully remove my tv from the wall so this could take a long time, but I will keep everyone updated. And well thx again!

....... 의 2023년 6월 10일

@imacpowpcintm I get it! I know what it's like. No worries, we'll be here. If you use the @oldturkey03 (or any other username, that user gets notified of the message.)

oldturkey03 의 2023년 6월 10일

@oldturkey03 I was lucky! One of my friends helped me and we did it, now the problem seems like a small component because I didn’t see any broken or soon to explode capacitors. Unfortunately I’m not that good in removing surface mounted components, so do u have any guide to do it properly? Also should I add a small heat sink from a raspberry pi for better cooling? Also I’m not sure if that exploded due to a failure or because something else had gone wrong. But if what has failed is only that thing it’s a good thing…hopefully…

....... 의 2023년 6월 11일

@imacpowpcintm that small component is a SMD Diode. YEs, the issue here is now, did it blow because of a short circuit somewhere else. or is it the part that has failed. Heat is awlasy an issue with this so it is possible that heat and/or a current spike has caused this. I do NOT have a schematic for this board so I suggest that you look on the black part of the blown component. You should make out some writing/numbers or even a makers mark. Post a real good picture of that with your Question so we can see what it says. Do the same with component D422 (next to it) let's see if they are identical.

oldturkey03 의 2023년 6월 11일

@imacpowpcintm to get a refresher in soldering (and de-soldering) I like the videos posted by Mr SolderFix (no kickback ;-) like this to desolder Look through a few and try to solder/desolder

oldturkey03 의 2023년 6월 11일

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Alr thanks and yes this also confirms my principals suspect’s of the faults. Unfortunately it will took a while until I can found someone that could help me to carefully remove my tv from the wall so this could take a long time, but I will keep everyone updated. And well thx again! — .......
@imacpowpcintm I get it! I know what it's like. No worries, we'll be here. If you use the @oldturkey03 (or any other username, that user gets notified of the message.) — oldturkey03
@oldturkey03 I was lucky! One of my friends helped me and we did it, now the problem seems like a small component because I didn’t see any broken or soon to explode capacitors. Unfortunately I’m not that good in removing surface mounted components, so do u have any guide to do it properly? Also should I add a small heat sink from a raspberry pi for better cooling? Also I’m not sure if that exploded due to a failure or because something else had gone wrong. But if what has failed is only that thing it’s a good thing…hopefully… — .......
@imacpowpcintm that small component is a SMD Diode. YEs, the issue here is now, did it blow because of a short circuit somewhere else. or is it the part that has failed. Heat is awlasy an issue with this so it is possible that heat and/or a current spike has caused this. I do NOT have a schematic for this board so I suggest that you look on the black part of the blown component. You should make out some writing/numbers or even a makers mark. Post a real good picture of that with your Question so we can see what it says. Do the same with component D422 (next to it) let's see if they are identical. — oldturkey03
@imacpowpcintm to get a refresher in soldering (and de-soldering) I like the videos posted by Mr SolderFix (no kickback ;-) like this to desolder Look through a few and try to solder/desolder — oldturkey03

Panasonic plasma 50 inch tv

The tv won’t turn on. Blinks red.

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