Insignia NSLCD32 help.

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  • 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
  • valvashon
    Insignia NS-LCD19-09 no standby LED; (new problem)
    by valvashon
    Having a new problem with the 19" Insignia that I modified with one of my automatic turn on circuits. That is now completely disconnected so that is not the issue. I was doing some modifications on that circuitry and managed to short something out on the underside of the power board.
    Actually found and bought the service manual (who knew it was even available?!) which brought me to the High Voltage Startup Circuit controller chip.
    Looking up that chip number- LD7575APS brought me to the attached datasheet. I have marked my voltage readings on the schematic sheet (open in new...
    08-30-2023, 10:41 AM
  • arnard
    Insignia NS-32L430A11 backlight issue
    by arnard
    I have a weird backlight issue on the above Insignia Plasma that I am coming up empty on researching.

    The display is darker on the left than on the right side of the screen. It uses 4 U shaped plasma tubes. I have had it apart deep enough to tell you that the tubes are bright as they should be at the electrode ends but dim as they get to and go around the bend.

    Since it is all 4 tubes it seems like it would be an inverter/backlight board but obviously can't be a blown up component as it does still somewhat work. I'm thinking low voltage but no idea where to go beyond...
    06-10-2023, 01:36 AM
  • srs
    Insignia NS-50DR620NA18 w/ large vertical lines & no picture
    by srs
    I'm not sure what to do next and came here since y'all helped me fix a 50" plasma TV back in 2014, which is still working!

    A friend gave me an Insignia NS-50DR620NA18 50" TV that suddenly developed large vertical lines on it. He said he had no idea what might have caused it and has replaced it with a larger TV. He was going to throw it away.

    I did not notice any bulged or leaking caps on any board, the voltages produced by the power supply match the voltage that the pins are marked. The backlight leds are working. I have tried cleaning the ribbon cables...
    04-22-2023, 02:40 PM
  • captainKKK
    Insignia 4k NS-50DR710NA17 troubleshooting
    by captainKKK
    Insigna NS-50DR710NA17

    Plug to AC, small blue power indicator light at center bottom illuminates. Only using flashlight test, Insignia emblem in center of screen for 90 seconds and then nothing. Power button pressed and still using flashlight screen test, the entire Roku, 4K menu is shown. Never does the back light show any light., even in dark room.

    Boards are these: https://www.shopjimmy.com/insignia-n...-1182036900530

    wifi unplugged

    Voltages on CN9103 (Power supply board to...
    10-30-2021, 11:25 AM
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