Plasma TV Repair Tutorial - Common Symptoms & Solutions - How to Fix Plasma TVs

How to identify which board is causing the Plasma TV problem - How to Fix Plasma TVs

This video is designed to be a guide for testing and troubleshooting your TV repair. Please note that other complications may exist that aren't addressed in this guide. While we always strive to provide accurate and detailed information, we can't guarantee that it will fix your TV's issues.

We are going to take a look at the different boards on the back of the plasma TV and describe what each board is responsible for and the common problems or symptoms that can be shown by a TV and which is most likely responsible for those problems and symptoms.

So, the first part we are going to look at is the power supply which is right here. The power supply takes in and distributes power throughout the TV. This board is either directly connected to your AC power cord or is connected to the AC adapter. Some common problems that can happen with your power supply, is that you have a dead set or your TV does not turn on and you have no standby at all, then you know that you are not getting any power to the TV. You could have a situation where you do have standby, but you can't get the TV to turn on. That could also be caused from your power supply. You could have a bad power supply also if your fuse blows. This power supply has a few different fuses.
The main board which is located over here typically manages your accessory inputs and outputs and houses the TV tuner. So this is what sends the signal from your HDMI ports, your RCA connectors, your VGA input, all your different inputs go through here and are connected elsewhere to get the picture on the screen.
If the set in total resets on its own with you doing anything, it could be your main board that is causing that. If you are having issues with the video on the screen it could be a connection here or the main board is not allowing you to have the full resolution or clear image. Again if any of these inputs don't seem to be working with your TV it could be a bad connection here.
The y-sustain, which is located right here can also be called a y-sus board, a y-main board, and an SC board. So the y-sustain here, connects your PDP assembly through a buffer system most commonly known as a y-buffer or y-scan drive. Which is right here. Some common symptoms of a bad y-sustain, the TV shuts down and power cycles. That would be your TV turns off, and then turns back on again and then turns back off and such. So its running through a power cycle. If you have no picture on the screen, this could also be the y-sustain or if you have a dark picture on the screen. If you have a flashing screen with shadowy sections, this could be the y-sustain. If your TV makes a popping noise, which is usually quite loud and then you have no picture on the screen, this could be caused from the y-sustain.
So, the y-buffer can also be known as a y-scan drive. This y-buffer again is what connects the y-sustain to the panel. These orange colored connections right here are built into the actual TV panel and are what connect to the y-buffer. So if you have a problem with any of these ribbon cables here, they will not be repairable as they are connected right into the panel.
A common symptom of a bad y-buffer board is if you have black horizontal lines running across your entire screen. They would run from one side to the other.
Over here we have the x-sustain board. Common terms for the x-sustain board is x-sus, x-main, z-sus, z-sustain and SS board. Common symptoms that your TV is showing that could be the z-sustain is you will typically have a picture of some kind on the screen, but it tends to look very red or purpley, the picture could be very dark and flash a little bit, you could be getting slow-motion effects on the TV as the panel isn't charging and discharging pixels correctly. So that can be some common problems that could be your x-sustain.
Next we are going to take a look at the logic board. This board can also be referred to as the main logic control board, the control board and the logic main. The logic board is connected to the main board and address buffers, via flat-ribbon cables and can sometimes be hidden underneath the main board.

TV Repair Made Easy™

[Sittingduck]

I fixed my plasma TV after watching your video, plus a new part from Ebay.

[oo-wgxn]

Hi Jimmy. When i plug in my TV it turn on and tick 3 time and power off. I took it apart and check inside. When i plug in the cord from main onto power board the main board flash 3 time and my dies powers off again. Is it my power board or main board. Please reply.

[raykupal]

what about thin vertical pinstripes across the entire screen? shows black on a color test image. equidistant from each other?

[sellomahlo]

Good day, your overview of Plasma TV presentation was second to none. Although you had not touched on audio processing of it - I had really enjoyed it. Much appreciated.

[patdu]

Great tutorial, My 60 inch Samsung Plasma started putting a thin bright green vertical line down the screen about 8 inches from the right side edge. I was bummed out and was looking for a new LED TV, I got used to the great blacks that Plasma TV's have and really didn't want to spend around $2500 for a OLED TV that have great blacks.
Found your posting and you described the symptom my plasma is having so I am taking a chance and ordering a Main Logic control board off of ebay, was only $15 so no big deal if it doesn't fix it.Thank you for the very informative post.

[jaket]

I have a LG 60pv450 that shuts off after a few seconds of running. There is a standby light but it won't power back on after it shuts its self off. The screen will light up but it goes off again right away. We did have a fuse breaker pop this summer and it's the same plug that runs the tv. Would this just be a fuse in the tv I could repair? Thanks

[LesLariz]

I have a Samsung PN60E530A3FXZA plasma TV that wont turn on. Several months ago it developed a problem where I would need to turn it on, see nothing on the screen, hen turn it off and back on it it would then work. Once it came on it was fine. Now I can not get it to come on at all. Maybe you can suggest which board might be bad. I have the back off and do not see any obvious issue such as bad or leaking capacitors.The RED LED on the front blinks and then goes out so I am getting power.

[moninino]

Do you have a video showing the capacitor replacement? Or should I just look visually for the damaged capacitor and then replace it? It will be located on the power board correct?

[shopjimmy]

Thanks for watching our TV repair video! Due to YouTube policy changes, we are no longer answering tech support questions in the comments section. We apologize for the inconvenience. If you need additional tech support, please visit FixYa.com or contact your local TV repair shop. Good luck and let's fix your TV today!

[orfwilliams]

When i turn my tv on it stays on 1 maybe 2 seconds and then turns back to the red dot

[JohnLattanzio]

X y and z are lookin' a little sus...

[QUANTUMGRAMMARCHANNEL]

PS51E530A3RXXT black horisontal lines, then two loud bangs and the screen went black. What should i replace? i see no damage or broken fuses on any of the boards.

[freshprince]

Shopjimmy.com I have an samsung plasma tv model number PN60F5500AF. It flashes a pink or purple then the screen goes black with sound. I have to turn the tv off then back on to get the picture to come back on. Can you tell me what I could do to repair this problem?

[TheStoyanovichKicks]

Hi, I have a Philips Plasma 50PF9731D/37 with White & Red vertical lines to the far right of the screen. The TV almost makes a loud buzzing noise when it starts up but tends to dissipate after 15 minutes. I appreciate your help with any suggestions. Thank you!

[orlandochidi]

Hi Jimmy, thanks for your resources. Pls I have a 60"LG plàsma tv that comes on some days and doesn't other times and whenever it comes on when you try scanning for Channels, it suddenly goes into standby and then refuses to come on again. It's a soft touch. What should I do please.

[Cindy-lz]

Good overview of components. Here's my situation. LG plasma 60PN5700 screen would turn off but sound & backlight remained on. Restarting the TV multiple times would fix it and it would remain on. This happened for about a month. Today, I went to turn on the TV and it immediately "clicks" off. Red standby by power lights works as expected.

Opened the back panel and no visual burn marks or bulging components. When power is switched on, you can see a small red light click on & off where the optical sound port plugs in on the main board.

I suspect it's a power supply problem but unsure. Switched plug cables and same result.

Suggestions? Thanks!

[andrewfinley]

Thankyou. Tv is a plasma lg 60pk250. The set power indicator glows red in standby. Pushing the power on remote or hovering over the power button causes click click but does not produce a picture. It used to be intermittent but now will never turn on. What causes that? Main board relay? This is an old tv but made a great picture. Is it worth fixing

[NathanZebrowski-yu]

Jimmy, I have an older pn608500 plasma tv.
It recently developed 3 pinstripe vertical lines on the left side. otherwise, the picture is fine. any idea what part may need replaced. Thanks

[ssehbai]

My PN64D8000FFXZA shows half screen and a moving line left to right. Pl suggest some solution.

[raypourier]

Hi I have a LG 60PV400 plasma and when u turn it the TV will turn on with no picture and after couple seconds click and turn off. I took the back cover off the TV and the Y sus board makes a buzzing noise. Do u think it's that whats wrong. And I actually can't find one for it if I buy a kit does it come with everything in it to change out everything that needs to be changed. Thank u hope to here back from you