outputs available on the power card 5v 12v . The power light stays on when the screen is not plugged in. but when you put the flex on the screen. power light starts blinking. The 5v output moves between 4.6-5.0.. where can this problem come from.not have badcaps. everything looks normal.I plugged in another screen again same problem to continue
-
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.... -
Hello...
my tv almost 2 years not powerd on and when i turned it on nothing happened and only 3 red light keeps blinking
i opened the back cover no sign of damage on the powery suply or motherboard
when i plug in the power i hear the reley sound like tik first and another tik..after that only red keep blinking..
another thing is even after i unplugged the power, The tv keeps red blinking 3 times for 2 almost 2 munites -
Hi,
I have the above tv that just shows a red light blinking twice 5 times, i have taken the back off and all the capacitors seem ok,
When i disconnect the mainboard from the PSU all the led's light up blinking fast but as soon as i reconnect the mainboard back to the power supply i get the red light blinking again twice 5 times,
I have attached pictures of the Mainboard, PSU and a small video (zipped) showing what happens when i disconnect the lead from the psu
Any help would be appreciated... -
Hello. I have problem with Samsung UE50MU6172.
TV won't turn on, red standby light is blinking.
Power supply BN44-00807A is fine. I replaced it with the new one.
Main board BN41-02568B (BN94-12530E)
I've read a dump (W25Q40CL). Can someone check it od fix it for me?...03-02-2025, 08:57 AM -
Hello,
We have this set here in our shop that is not ginving sign of life besides red light that is blinking one time after pressing the button and nothing more... After detaching the mainboard from the PSU (this set has separate board thank god?! or not...) the backlight comes on. After reattaching nothing besides red light.... Can anyone from the forum help me here? Thank you in advance. Here's a link with images of the mainboard and the memory IC's that are on it.
Regards, Norbert!...
Comment