LG 32LB1R - stuck in standby mode

Collapse
X
Collapse
+ More Options
Posts
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • lego1234567
    New Member
    • May 2022
    • 7
    • Slovakia
    #1

    LG 32LB1R - stuck in standby mode

    Hi. I have the following problem with my TV. After connecting to mains, the standby led (red) turns on, but TV is not responding to remote control or buttons on TV. After some measurements, I found out that +5 V standby voltage is present, but I dont have ON/OFF signal coming in to turn PSU on. It stays at zero volts. After looking at the schematic of the mainboard, I should get ON/OFF signal coming in at the R1402 resistor, but it stays around +3,5 V. So I removed it and I was able to turn on TV with buttons on TV, but not with remote control.

    What could be the problem ? Thanks for suggestions.

    Attached Files
    2 Photos
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • lepak06
      TV LED 4K Selecline 65S18 ( T.MS3458.U801) stuck in Standby mode
      by lepak06
      Hello

      I have an TV Led 4K Selecline 65s18 with mainboard T.MS3458.U801

      The TV is faulty with stuck in Standby RED LED. Can't power the TV.

      Before this problem , the TV stuck the picture with artefact , i unplug the AC cable and since the tv is stuck in standby .

      All voltage are OK on PSU and main board for regulator. I tried flash firmware 25Q64 with many dumps

      But the voltage on power button is 0.6V not 3.3V. When i press power button the voltage up to 0V. I tried to add 5V with Power Supply on 5V_STB and 3.3V on Power...
      01-12-2023, 01:43 AM
    • toty79
      Hisense LTDN50K220WSEU stuck in standby
      by toty79
      Hello to all friends of the forum and well found, here I am asking for your help and sorry for my translated English.



      As per Hisense tv title LTDN50K220WSEU stuck in standby
      PSU rsag.820.5687 HLL 4855WF
      Main rsag 7.820.5842
      I enclose the psu diagram, after the first routine checks I find myself with a regular standby voltage of 3.3v blue light on steady when the power button is pressed nothing happens, psu disassembled and bench checked ... forced ignition by sending a signal 3 , 3v on the SW and PWM2 pins the psu turns on and delivers all the voltages...
      05-01-2022, 04:39 PM
    • Rusenga
      Samsung UA39EH5003R Stuck on standby
      by Rusenga
      Hi techs, I have a Samsung ua39eh5003r which switches on and then goes to standby. I have to wait for a day or two for the tv to switch on again, all the time it is stuck on standby. I have checked the voltages on the power supply board on both occasions when it is on and off and these are my findings:

      Connector CNM803:
      TV ON
      Pin1,3,4,5(Vamp),7(Vamp)- 12.6V; Pin2(PWM_DIM)- 0.96v; Pin6(BLU_ON/OFF)- 4.41v; Pin8,9,10- grnd; Pin11,12,13- 5.16v; Pin14(Power ON/OFF)- 3.3v

      TV OFF
      Pin1,3,4,5(Vamp),7(Vamp)- 12.6V; Pin2(PWM_DIM)- 0.06v; Pin6(BLU_ON/OFF)-...
      09-18-2021, 11:51 AM
    • stylishconsultant
      un60j620dafxza - Samsung No Display Problem
      by stylishconsultant
      Hi All,

      Need help.

      I have a samsung un60j620dafxza led tv. When I plug it in it has no display, no sounds, and no standby lights.

      So I opened the tv and disconnected the power to the mainboard and the backlight powered up. This according to many people says that this is a mainboard
      problem. I checked the voltage coming from the stb and I read 1.3 volts on pins 1,3,5 and 7 which are low volts instead of 13 volts which i think the lcd panel
      might be drawing too much power from the power supply that it prevents the right voltage going to the mainboard....
      09-04-2024, 03:26 AM
    • cstout
      DeLonghi AC Remote only accepts 3V
      by cstout
      Hello all, I've been looking into this portable air conditioner's remote control and can't find what could be causing the problem - or possibly this remote is just terribly designed.

      The remote only works at exactly 3V - if I drop it any lower, using my bench power supply, to say, 2.9V then the remote will not flash the display and turn off. I don't have any AAA batteries that are exactly 1.5V each so I'm not sure if this remote is designed this way - to only use the freshest possible batteries, or if there's a failed component in the mix.

      I can't find any schematics...
      06-03-2024, 03:53 PM
    • Loading...
    • No more items.
    Working...