sanyo

Collapse
X
 
  • Time
  • Show
Clear All
new posts

Related Topics

Collapse

  • roy.zhero
    Sharp LC50LE752E no picture and backlight, indicator light is lit
    by roy.zhero
    I acquired a free 50” TV. IT is a Sharp LC50LE752E. It does not show a picture and has no backlight, although the indicator light turns blue meaning it has turned on.

    When power is plugged in, the indicator light will turn on blue, the backlight stays off and nothing is visible, even with a flashlight. When pressing the touch buttons on the tv nothing happens. When pressing buttons on the remote control the indicator light will blink indicating the IRsignal was received, but nothing happens.

    When I hold the force-on-combination it will turn on. It then shows a perfect...
    09-20-2020, 01:57 PM
  • learnmore
    Samsung QE55Q60TAUXXU - flashing backlight and flashing standy light--no image
    by learnmore
    Hello Community!

    CASE DETAILS

    Promblem Signs: Backlight on 1 sec off 7sec > repeat && Red standby light: 1blink, off 3 sec, 2 blinks, off 5 secs, 2 blinks, off 3 sec, restart cycle

    13V present on powerboard output. Backlight continues flashing after removing cables to pannel one at a time and even with both disconnected. NOTE: backlight STOPs flashing and remains on when connector between powerboard and mainboard (note Tcon built in) is disconnected.

    Tried inserting firmware on USB and left it in for a few hours, but no change
    ...
    03-03-2024, 09:49 AM
  • Grasshopper2Ant
    Visio V755-G4 LED TV: No backlight, have sound, see menu with light.
    by Grasshopper2Ant
    No backlight issue. Have sound and can see menu with flashlight.

    Suspect LED driver, voltages are 100V each side. What should the voltages be for 75 inch TV on the Power Supply Board? I have 96 leds x3 volts per=288/2=144 volt per side?
    Am I low on my volts causing the leds not to light up?

    Before I got all backlights out, the right side was a bit darker than left side. How many leds
    need to be out for all to not work?

    Thinking of getting a led tester. If leds light up, would that confirm it is the Power Supply Board?

    I do not want...
    07-27-2023, 03:03 PM
  • DanPoka
    Guide me through repairing a Dell p2210f LCD ccfl backlight monitor
    by DanPoka
    I bought this p2210f dell monitor to fix. Schematic is the same as p2210.
    Behaviour is that monitors comes on but then backlight switches off almost instantly. If I look with flashlight I can still find the "No signal message". So definitely a backlight issue. Trying to advance the issue I proved that the protection circuit is switching off the backlight by shorting out C3 and resistor to disable the INL chip then re enable by removing the short.
    This is where it gets interesting. When I disassembled the monitor to solder leads on c3 capacitor I noticed the backlight flickered...
    02-15-2025, 05:05 AM
  • ItepK
    LG 32LG3000 TV, three red light flashes, then the backlight turns on, but no picture
    by ItepK
    Hello everyone! I've found this television, and I began troubleshooting it.

    First, the television kept rapidly power cycling. I've warmed up the capacitors with a hairdryer, and after 3 dimmed red blinks, the backlight turned on, then turned dim, and no picture was present on the screen.

    I believed that this was caused by a bad power supply producing insufficent power (I've measured 3.5v on the 5.2v rail), so I've blindly recapped the board.

    After the recapping, all the voltages stableized, however, the issue in the title still remains.

    I could...
    01-03-2025, 09:01 AM
  • Loading...
  • No more items.
Working...