Screen works perfectly for few minutes then becomes garbled.

Question

Panasonic Television

Repair guides and support for televisions manufactured by Panasonic.

576 질문 전체 보기

dara_acca @daraacca

평판: 1

1

게시일: 2019년 10월 21일

옵션

Screen works perfectly for few minutes then becomes garbled.

The screen works perfectly, then suddenly today after 3 or 4 minutes there are garbled random lines, which stays like this, or else goes black. The sound is usually still working. If i disconnect the power , then switch back on, the picture is ok again for a while. Any ideas?

The TV is a 2010 46” Panasonic viera plasma ( TX-P46GW20 ) No problems until today.

Below is a video of the problem..

I managed to get the back off the TV. Everything looks in good shape. No ribbons are disconnected, capacitors look ok to the naked eye. Not too much dust and dirt.

이 질문에 답하기 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

예 아니요

점수 0

댓글 2개

Thanks Matt. I will definitely try this. But because the problem is recurring each time after a few minutes, i was thinking maybe it’s to do with some kind of overheating or capacitor issue. I’f its something simple i’d rather not have to buy a new TV!

Thanks for your suggestion!

dara_acca 의 2019년 10월 21일

On a plasma TV capacitors are used for things related to power supply, audio and rf signals not really display. I would think overheating would cause it to turn off completely. However a thorough cleaning could remedy any heat issues.

Matt Barbato 의 2019년 10월 21일

댓글 달기

답변 2개

Thanks Matt. I will definitely try this. But because the problem is recurring each time after a few minutes, i was thinking maybe it’s to do with some kind of overheating or capacitor issue. I’f its something simple i’d rather not have to buy a new TV!

Thanks for your suggestion! — dara_acca
On a plasma TV capacitors are used for things related to power supply, audio and rf signals not really display. I would think overheating would cause it to turn off completely. However a thorough cleaning could remedy any heat issues. — Matt Barbato

oldturkey03 @oldturkey03 평판: 781.6k 1.1k 893 2.3k · Answer 1 · 2019-10-21T17:41:47-07:00

가장 유용한 답변

oldturkey03 @oldturkey03

평판: 781.6k

1.1k

893

2.3k

게시일: 2019년 10월 21일

옵션

dara_acca we need to know your TV's exact model number otherwise it is really a guessing game. If this happens after a few minute it is usually caused by components overheating as well as bad solder joints. It could be an issue with your buffer boards. It would help if we can see your boards as well as what the screen displays. Post some good pictures of this with your QUESTION 기존 질문에 이미지 추가하기

해당 답변은 도움이 되었습니까?

예 아니요

점수 2

댓글 2개:

Thanks pal - ive uploaded a video and photos to my question, as well as the model of television. Many thanks for your help!

dara_acca 의 2019년 10월 23일

This looks like either a y-sus board or a main board issue. Let's see if there are schematics available for your model

oldturkey03 의 2019년 10월 23일

댓글 달기

Matt Barbato @r2rmatt 평판: 13 1 · Answer 2 · 2019-10-21T11:57:34-07:00

Matt Barbato @r2rmatt

평판: 13

1

게시일: 2019년 10월 21일

옵션

It sounds like there is an issue with the ribbon cables that attach the plasma display to boards that control that display. If you remove the back panel of your TV you will find two circuit boards with several ribbon cables attached. One board controls the horizontal display the other is for vertical display. These boards may be hiding under speakers or other components but will likely be near the edges of the TV. I would unplug and re-plug in all the cable to check that they haven’t come loose over time. If they are damaged you will have to source replacement parts.

해당 답변은 도움이 되었습니까?

예 아니요

점수 0

댓글 1개:

Hi Matt, as mentioned in my edited post, i managed to get the back off the TV. Ribbon cables all seem fine - nothing else obvious...

dara_acca 의 2019년 10월 23일

댓글 달기

Panasonic Television

Screen works perfectly for few minutes then becomes garbled.

답변 2개

귀하의 답변을 추가하세요