Sharp LC37D43 OPC flash

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • danny747ca
    New Member
    • Sep 2009
    • 1

    #1

    Sharp LC37D43 OPC flash

    I heard Sharp has service bulletin on LC37D43U about power LED 2 flashes and OPC LED 1 flash.
    It might come from 3.3v STB to UPC?
    I check 5v STB ok.
    3.3v is around 3v?
    I suspect IC LM324 or some zeners diode around, but I have no service manual to troubleshoot
    please help
    Thanks

Related Topics

Collapse

  • Superbee_dad
    Sharp 80” long short flash backlight error - Help
    by Superbee_dad
    Hello Sharp TV experts
    Our Sharp LC-80LE642U displays one short one long flash error code which is a backlight error. I went into service mode and there were 8 lamp error counts recorded. I reset the count to 0 and did a reset. The last monitor error cause was 16 B00014639:12. 16 is the code for backlight error. I tried to power the tv up but went back into error mode.

    > I checked voltages on the power supply board and they all check out .. including 3.28 volts at the error pin.
    > There is power to the cpu and T-CONN and no faults found there. The cpu has a flashing...
    01-24-2025, 11:51 PM
  • ekozeko333
    [Help] Lenovo Yoga Slim 7-14ARE05 (DA0LS3MBAF0) – 25Q80DVN1G Flash Is All FF, USB-C PD Stuck at 5V
    by ekozeko333
    Hi all,
    I’m trying to recover a Lenovo Yoga Slim 7-14ARE05 with board DA0LS3MBAF0 Rev:F. I’ve run into an unusual issue where USB-C PD is stuck at 4.7–5V and the system won’t boot (keyboard lights flash briefly, then nothing).
    🔥 The Problem Started After Suspected ESD/PD Fault
    I experienced a power issue or ESD event through a USB-C charger
    After that, the NX20P5090 power switch was visibly burned and was replaced
    Now the PD controller always negotiates 5V @ 2A, even with known-good chargers
    🧠 What I’ve Done So Far
    Flashed...
    06-21-2025, 02:48 AM
  • corrize
    Nikon D800 camera - flash don’t work and capacitor don’t charge
    by corrize
    Hello, I'm stuck in troubleshooting…
    The flash system works like that : when the (mechanic) flash button is pressed, the flash mecanically pop up, and a circuit buck boost elevate 7v (batt) to 200-300v (?) for charging the big capacitor. And when the photo shoot button is pressed, the capacitor is discharged in the xeon light.

    In the D800, there is a first « power board » close to the battery. 2 wires (batt 7v) goes to another little « flash board ». I measured 7v, so ok.
    When I press the flash button, it's detected by the system, flash icon appear on LDC display....
    10-01-2022, 10:02 AM
  • yucel-yucel
    Sharp LC-39LE652V Nand Flash
    by yucel-yucel
    Sharp LC-39LE652V model device could not be opened due to nand software error, we rewrote the nand software and it worked. But we were able to find the software without satellite, it does not see the internal satellite. Does this model have a working satellite version and software? Thanks in advance.

    Model ; Sharp LC-39LE652V
    Panel ; V390HK1-LE6
    Mainboard ; QPWBXG135WJZZ
    04-06-2023, 04:57 AM
  • spmetroil
    Request: SPI Flash BIOS Dump (Winbond 25Q128) for Dahua NVR4216-4KS2
    by spmetroil
    Hello,

    I am trying to repair a Dahua NVR4216-4KS2 that is not booting.
    The main BIOS/firmware is stored in an SPI flash EEPROM (Winbond 25Q128, labeled as U130 on the PCB).

    I have a CH341A programmer and I already attempted the following steps:
    1. Identified the correct chip (W25Q128, 3.3V SPI flash).
    2. Tried to read the contents with CH341A Programmer software. The dump seems corrupted and I often get the error: “Chip with the contents are in disagreement.”
    3. Compared several chip type selections (24Cxx and 25Qxx families) to confirm it is indeed a 25 series SPI
    ...
    08-19-2025, 09:23 AM
  • Loading...
  • No more items.
Working...