Insignia NS-L37Q-10A Red Standby Light No Power

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • kevinm34232
    Badcaps Legend
    • May 2012
    • 1884
    • USA

    #1

    Insignia NS-L37Q-10A Red Standby Light No Power

    Upon plugging in the red standby light is lit, but pressing power button does nothing. Checking the PS voltages, I see that PS-ON has got 5V and all the other voltages are present (12, 24, 3.3), except for the O/I (or O/F) is 0V. I jumped that with the 3.3V from the pin next to it using a resistor, and the backlights lit up.

    I'm thinking this has to be a main board problem, but this board is rare and expensive. I couldn't find an eeprom for this model but I tried one from a close model # but same problem. Any ideas??
    Attached Files

Related Topics

Collapse

  • cajoeg
    Insignia NS-LCD019-09 issue: Power light turns blue for 3 seconds, the flashes red before going solid read again
    by cajoeg
    Hello, I'm new to the group and to trying to repair a LCD TV. During the past few years, I've been collecting/repairing/restoring vintage personal computers (Commodore, Apple II, Atari, TRS-80, Texas Instruments, and Timex Sinclair). This has been my retirement hobby. Now I've gotten interested in trying to repair a LCD TV that I have and used regularly when working on vintage computers.

    The LCD I'm working on is a Insignia NS-LCD019. I've downloaded the service manual that I could find, but it must be a different revision since not too many items in the service manual match the TV...
    02-10-2025, 04:01 PM
  • AleMonti
    LG 55EG910V - no power and no standby light
    by AleMonti
    Hi everyone,
    I'm trying to troubleshoot and repair this old LG OLED curved TV, model 55EG910V.
    I did some basic troubleshooting and reviewed most related posts here, but I wasn't able to isolate the issue.

    The TV shut itself off during playback and never came back to life - the standby light remains off. My dad claims that it has happened a few times in the past but the issue resolved itself after some time. Not this one.

    After checking the basics I did the following:
    • I measured all voltages and as expected the only active supply is the 3.5V standby. It
    ...
    11-04-2024, 05:02 PM
  • SkishyIshy
    Sony Bravia XBR-65x900f: No Power, No Standby-light - however 3.3v STBY is present
    by SkishyIshy
    Hey All,

    I have a Sony 65x900f that I purchased cheap because of a no-power issue.
    I assumed that because there is no standby light visible, it would be an easy fix - however upon opening up of the unit I can confirm that the 3v3 standby voltage is making it's way from the power supply to the main board. I'm a little confused as to why there is no standby light.

    I am firstly wondering if anyone has this model of TV, or has worked on one and can give me some insight. I have tried to find a service manual for this model, to no avail - and would really appreciate...
    03-17-2021, 11:44 AM
  • noinimod
    Sony 55X900E no standby light, no power. Replaced mainboard already
    by noinimod
    No standby red light, nothing
    This Sony has a separate AC->DC power adapter supplying 19.5V to the TV power board (JK3)



    Disconnected JK3 power board from main board, checked voltages on all the pin outs

    At a few pins I can see the power supply providing 19.5V to the main board



    Based on the service manual triage.. it seems to be pointing towards the power board (JK3) being the most possible culprit


    LED light turns on when I disconnect LED driver board ribbon from mainboard (so i thought it is the mainboard,...
    12-22-2021, 12:58 AM
  • x_orange90_x
    Vizio E550i-A0 no power, no standby light
    by x_orange90_x
    I have a Vizio E550i-A0 that will not power on. It also does not display the standby light in the corner. I disconnected the main board cable to see if the backlights would light but they did not (maybe this is normal for this set?). I checked the voltages on the plug and they all read in mV or 0, so there's no voltage there. The fuses are ok, and the voltages of the 450v caps read about 160v. I see no visual damage on either the power supply or main board. I have read online that the main board is usually the culprit in this model, but not getting backlights with the main disconnected makes me...
    11-20-2023, 09:49 AM
  • Loading...
  • No more items.
Working...