v047lhdtv10a

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  • cmg3631
    by cmg3631
    Hello all!
    I have been working at a Vizio vo47lfhdtv10a. I am at a point where I am confounded. I replaced 2 680uf 35v caps on both the slave and master that were bulged. Nothing. Then I found bad 470uf 35v under the heat shield on main power. I replaced it with a 1000uf 35v that I had. My understanding on that it is ok to go equal or higher. Still nothing. What has me baffled is I am supposed to have 0 voltage on pin 1 power on/off but I have 15.5v when tv is off but 3.13 when I power on. These were the readings even before I changed the caps. Any help?

    Thank you,
    ...
    12-03-2017, 09:32 PM
  • chazzo
    CH341 programmer advice, including jumpers seemingly reversed
    by chazzo
    I’d appreciate some very basic advice on CH341x programmers. I know this topic comes up from time to time, but stuff changes, so I hope a refresh is in order. In particular, I see some unexpected things happening with jumper positions.

    [My plan is to learn to read and write 24CO2 EEPROMs via I2C. The first target is the one in my Uni-T clamp meter, but before tackling that I have some brand-new EEPROMs to practice on.]

    I have two basic Chinese programmers. One is the blue board with a CH341A and two rows of pin headers. To my untrained eye it looks like all the others....
    10-12-2025, 08:15 AM
  • huzo
    Dell 5590 no image on LCD,HDMI works ,the board works...
    by huzo
    The board is LA-F411P ,DELL 5590 ...

    The screen polarises,no backlight,no image,only black screen,tried another screen,the same,so there is no backlight,but there should be an image when i shine a lamp behind the screen,but there is none...only dark screen...when screen is connected and i press F8 to turn the image over to the external monitor, the external monitor gets coloured bars ,but when i disconnect the cable from the EDP ,the HDMI picture is good...What could be the problem? I don't have another edp cable, but i measured it with meter and it comes out good...i am baffled......
    02-16-2025, 03:08 PM
  • kotel studios
    Compaq series PDP-124P PSU - dies after a split second
    by kotel studios
    Hi

    I am quite baffled at this PSU that came out from an dead HP d530 (asus P4SD). Tested all the common failed components, all are fine. D2/3 are both fine. Not shorted in any way. Recapped the whole 5VSB board and the PSU came "back" from the dead (earlier there was a short from neutral to earth, went away disassembly). Now even with 5 load HDD's it's still turning off after a split second. All diodes seem to be fine. Caps are OST, which IMO rarely die. There is 3.3v on PS_ON and 5V on 5VSB. Removed most of the glue there was (pictures don't show it). The traces that look...
    3 Photos
    12-19-2024, 01:15 PM
  • Luke Anders
    Lenovo Legion 5 (15ACH6H/17ACH6H) - Does not boot into any OS
    by Luke Anders
    Hi everyone,

    A few details about the laptop itself:

    Name: Lenovo Legion 5
    Model: 15ACH6H (according to its back cover details) / 17ACH6H (according to the BIOS Menu)
    BIOS Version: GKCN60WW
    EC Version: GKEC65WW
    Serial Number: PF39AQ7Z
    Board Model: NM-D562 Rev 3.0
    RAM: 16GB Installed, DDR4 (brand new)
    NVME: 500GB NVME drive (brand new, installed Windows 10 onto it for testing purposes and tested on another laptop (a dell XPS) works perfectly fine and boots in)

    I bought this laptop recently from eBay as a faulty device....
    10-12-2024, 05:13 AM
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