r/TVRepairHelp

The TV is made of 2 logic boards and one power supply board.

The TV turns on but there is no backlight, I can see an image by flashing a light to the TV.

I am guessing the two white connectors on the upper left of the power board (1st picture) are for the backlight. Could someone confirm?

When the TV is turned on, the pins of these connectors don't show any voltage.
They also don't seem to be shorted to GND.
I also can't see any burned components.
Other power rails are present on the two logic boards.

I would also like to know where the backlight enable signal is, if there is any. It could just be that the main board is not telling the power supply to turn on the LEDs? But it is hard to tell as the PCB has no marking/silkscreen.

Thanks a lot for any help!

Tcon or VA panel or is that screen bleed ?

It does that on every scene but can move a little.

Mostly anoying when there is black besel.

Hi everyone,

my 3 year old Philips 58PUS8507/12 went black.. It all started with strange vertical stripes at the top of the screen, most visible on high-contrast edges (e.g. white menu text over a movie). Unfortunately, I never took a picture of it, but this photo I found online looks very similar—even though it wasn't quite as bad in my case.

These only occurred sporadically and would disappear again after a while. Now there’s no picture at all. Ambilight, sound and backlight all work fine.

Already tried:
∙ Visual inspection of the boards
∙ Reseated all connections/ribbon cables
∙ Half/half T-Con test with no success (fault screen stays completely black)
•. Replaced T-Con

Panel failure, or is there still hope? Would really appreciate any tips or experiences with this series (58PUS85xx).

Thanks in advance!

LG 55UH7650 model starts up fine then within 1 min, cuts to 1/3 of screen being lit. replaced T-con then power supply, same problem. Is this an LED issue or is the screen toast? is the repair worth it?

It’s been like this for a week now

I have a HiSmart 4k tv bought in 2020. Recently I smelled something burning and the screen flickered then went super dim. Removing the back panel I found one of the ribbon cables burnt and melting. It seems to have burned the motherboard as well. Is this something where I can replace the cable or do I have to call it a day?

My tv has just got 3 black dots that i can see through but are barely visible when the screen is lighter but when darker they are more visible especially on grays , it also has a weird area around it that has been affected i looked at my tv backlight up close and it seems all the lights are still working i was wondering what was wrong ?

My Samsung smart tv randomly disconnected from the WiFi and won’t reconnect. All my other devices connect perfectly fine and work as normal. I already tried unplugging and resetting but it continues to say the same thing. The tv had been running on this WiFi previously for months and just decided now to stop working. Any ideas on what my problem is?

I just got this 30 inch Sony KD-30XS955 Super Fine Pitch TV! It works just fine and everything. But something I noticed is that it is pretty blurry even in the center. Expecially on the edges (way more then my HS510) How would I go to fix that? Its making stuff hard to read and is annoying. Other then the blurry part of it I love the tv. I would really appreciate the help, I really want to keep this old relic going strong 🙂

While actively watching a show, the right side of the screen started to go dark. I thought it was just the streaming service or my HDMI connection. After unplugging the HDMI and letting the TV sit off for 12 hours, it is still like this. Is it repairable? Or is it time for a new TV?

Edit: it is a Samsung 65” TV purchased in 2019. I don’t have the exact model on me.

So my original Vizio TV continued to play sound, but the screen was just black, ended up contacting VIZIO and they sent her a replacement, but then that replacement was cracked. So they claim to be sending another replacement, but I had already got another one from Walmart. I got the VIZIO quantum 4K Smart TV, and it was perfectly fine when I turned it on the set up was fine. Everything was running smoothly but then a couple days later this weird picture glitch popped up on my TV and I’ve tried everything to fix it and I can’t. So I was just wondering whether or not this is something that I just need to get a replacement for or if it is a problem on my part.

Does anybody know why it’s doing this ? Can it be fixed or will I just have to get another tv ?

When viewing from top angle of the tv i can see white lights from bottom bezel, looks like the bottom bezel is not sealed properly. this is a new television which is just bought before 5 days. Any opinion on it guys

I have a nearly 5 year old (bought Nov 2021) UK model Samsung TV who has never had any issues (aside from Alexa barely functioning at the best of times) but today it randomly cut out while watching YouTube on my PS5. It didn’t cut out cleanly though, while the audio was abrupt the picture faded out over a few seconds. When I felt the TV itself the back was quite hot but the top of the frame was by far the hottest part. (I guess because heat rises.)

Then it started to boot loop. It would show the QLED icon (which it doesn’t usually do when I turn it on) then the backlight and picture would cut, wait about ten seconds then try again. I can see the backlight cutting out when looking down into the top vent.

So I unplug it and let it discharge, sometimes even holding the power button tucked underneath for approx 30 seconds. When trying again the TV would power on for a short time (10-30 seconds) before fading out and boot looping again. I notice that the longer I leave it unplugged for, the longer the TV will stay on for before fading and looping. (I only tried it a few times so it’s not a perfectly scientific test.)

I’ve seen in some other tech support groups that I should check an LED indicator but as far as I’m aware my model doesn’t have any LED indicator at all. Not under the small badge in the centre of the bottom bezel (where the power button is tucked) or anywhere else, so I can’t use that to diagnose my problem.

I really can’t afford to buy a new TV right now as I already have some small debts to clear and I’m on a lower income. My dad is quite a techie so I might have him look at it (my warranty is far expired because Samsung only give 1 year for their TVs) and see if he can diagnose a power delivery problem. If that’s not the case, I might have a cooked panel which is far from ideal.

One thing to note is that it’s been an especially bright and hot summer here in the UK and for half of the day my TV panel is in direct sunlight. So it might be a heat issue, especially with how hot to the touch my TV felt immediately after the fault started. But at the same time it’s 5 years old nearly and this is the first problem I’ve had.

Any advice is appreciated!

(P.s I can supply anything from the rear info sticker if needed.)

TV picture keeps glitching on every source — could it be an internal connection?
Hi everyone,
I’ve been having a strange problem with my TV for about two weeks. The picture keeps glitching/distorting, while the audio works completely normally.
The problem happens on every source I’ve tried, including:
Netflix
YouTube
regular TV channels
So it doesn’t seem to be related to a specific app, HDMI device, or input.
The TV is about 7 years old and is wall-mounted on a movable/swivel wall mount.
I’ve already checked the power cable. I unplugged it, plugged it back in, and inspected the cable, and it seems to be completely fine.
Interestingly, sometimes the TV would turn itself off and restart, and after restarting the picture would work better for a while. However, since about two days ago the problem has become significantly worse.
Could this be caused by a loose internal cable or connector, or does this sound more like a failing component such as the T-Con board, main board, or the panel itself?
Is there anything I can safely check before taking the TV apart?
Thanks!

How can I fix it ????

What are these marks on the sides on my tv? Can I fix them and how? Toshiba 75” Class C350 series LED 4k UHD Smart Fire TV

Got a slightly frustrating issue with a new TV. I do not want to risk putting it back into place as it does not seem to impact the actual image. However, I am concerned debris may get in the now slightly exposed internals. What would be the best idea to cover the slight gap? Is there a specific electrical tape I should buy for the sensitivity of a tv screen? Thank you for any help.