This tv has no image, but does have sound and backlights, when I remove the cable between the ps and main board I have lights. And main board to the panel driver board It goes dim. I did notice the two other panel boards on the edges left and right if I remove the jumpers from the center board the backlights stay on if I connect the jumper the tv goes dim and flickers and 2 red blinks. Need help
-
-
Re: SAMSUNG UN70TU7000F no image
may be a problem with the panel, maybe try the tape cutoff method: https://www.youtube.com/watch?v=pfrRhw7-ZIILast edited by nomoresonys; 02-14-2022, 09:22 PM. -
Re: SAMSUNG UN70TU7000F no image
Need some good pictures of boards.I assume no responsibility for any stupid suggestions I might post.Comment
-
Re: SAMSUNG UN70TU7000F no image
I'm new to this can't find the edit and every time I try to load all the pic only one shows.Comment
-
Re: SAMSUNG UN70TU7000F no image
Here are pics of the boardsAttached FilesComment
-
-
Re: SAMSUNG UN70TU7000F no image
Looks like panel issue, you can try scotch tape on the jumper cable between panel boards.Comment
-
Re: SAMSUNG UN70TU7000F no image
Ok thank you nomoresonys sent a link will check it out. Thanks guysComment
-
Re: SAMSUNG UN70TU7000F no image
Did you ever figure out a solution? I have the same issue. ThanksComment
-
Re: SAMSUNG UN70TU7000F no image
Probably a short in one of the panel board caps.I assume no responsibility for any stupid suggestions I might post.Comment
-
Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.
Upon bringing it home and plugging it up, it showed a standby light.
I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.
The screen seems to blackout and stay black, but with a flashlight I can see the display.
With my Playstation 4 connected via HDMI, and running a game I can hear sound.
Assuming... -
Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic... -
Problem
This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached.... -
I hope this is the right forum to post in despite not technically being a repair, but still a question of swapping boards.
I thought I'd explore the possibility to upgrade an existing working Samsung ue55nu7096u with the logic board (and power board if needed) of a newer model (ue55ru7105k) of the same size and appearance (and resolution). The reason being I'd like the extra inputs of that board including component in, an extra HDMI port and bluetooth. Its panel is broken so I have no use for the board otherwise.
The models launched in 2018 and 2019 respectively.... -
Samsung LN46C630K1F – Intermittent Backlight, BN44-00341B Power Board
Summary for TL-DR readers:
• Backlight is intermittent, may come on with TV boot or not. No flickering, never fails during TV on.
• Have obtained Samsung schematic & service documents - Can upload if helpful.
• Have read ALL applicable threads
• C1818 and CP820 replaced as low hanging fruit
• CN802 data taken for normal and failed BL operation. SUMMARY: Pin 2 - 5vDet = 3.52 @normal, 0.0 @BL fail. Pin 6 - EPWM = 1.631 @normal, 1.058 @BL fail.
• VCC pin (18) of PFC...
Comment