Adjusting Plasma Voltages

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • dcapper
    Badcaps Veteran
    • Dec 2013
    • 496
    • Canada

    #1

    Adjusting Plasma Voltages

    I have been working on this Daytek Plasma, it's basically a LG. All LG parts.

    I can't adjust the Vzb on the Zsus. Doesn't do anything. No picture adjustment.

    I adjusted the pots the best I can to get a clear picture. I finally got one but the whites are low and the readings are all out of whack.

    The panel sticker says the Vs should be 189v and I have 171v.
    The panel sticker says the Vy should be 75 and I have 93v.
    The panel sticker says the Va should be 65v and I have that.
    The panel sticker says the Vsc should be 115v and I have that.
    The panel sticker says the Vsetup should be 200v and I have that.

    Is the tv ok to run the Vs at 171v and the Vy at 93v?

    If I set them to the proper numbers my picture is full of green and red pixels.

Related Topics

Collapse

  • Capacitorial
    Powersupply has all the voltages - Monitor still no power
    by Capacitorial
    Hello guys,

    I have a Philips 240B7QPJEB. The monitor seems completely dead.
    I opened it and measured the voltages of the powersupply. I found that a mosfet was dead and replaced it.
    On the connector, that goes to the TCON board, all voltages 15-19V and 5V are present.
    The small connector on the left of the PSU has two cables with 18V and all the other have 0.2V. It connects on this small connector on the left ontop of the panel. I guess the backlight? Seens fine I guess.
    The weird thing is, that the Power LED is powered over the TCON board.
    On The TCON...
    12-28-2024, 02:12 PM
  • theone111
    Problem with LG Plasma 60PM6700 - Random power downs
    by theone111
    I have an LG Plasma TV 60PM6700 for the past ~12 years.

    In the last ~3-4 months I have been having some issues.
    1. Problem: It started with random picture disappearing (sound still worked).
      Frequency: Happened about once a week.
      Solution: Had to turn off TV wait a few seconds before turning it on again.
    2. Problem: Then it got worse and the TV started to shut down and when turning on the no picture just sound.
      Frequency: Happened about once a week.
      Solution: Had to turn off TV wait about 10-20 seconds and turn it on again to solve.
    3. Problem: TV shuts down
    ...
    07-22-2024, 10:36 AM
  • gjgib
    Help reading schematic voltages input/output
    by gjgib
    Hello, this might be embarassing since I consider it a dumb question but keeps me kinda stuck sometimes in my journey.

    I want to know if there is any post in this forum which explains my questions. A) When, where and how do I know when X voltage line is input or output. Example:


    I'm battling with this IC to understand it's voltages. It's from non-turning-on Lenovo Ideapad 3 15iil05 - NM-D461.

    I see some lines like +5VL / +5VALW / V9B+ / +3VALW being okay and some others like 1.8VALW / +0.6VS / +2.5V_DDR. I just know that some of them are bad or missing,...
    05-06-2024, 08:11 PM
  • RossMoodley1967
    HISENSE LCD LED TV MODEL HX40N2176F LED DRIVER SN51DP IC PINOUT AND VOLTAGES
    by RossMoodley1967
    Hello

    Need to know the voltages that will be present on SN51DP ic when tv is in standby and when powered on.

    Just to elaborate on the problem with the tv 1.set came in with flash of HISENSE logo on screen then back into standby.2. Now tv when plugged in red standby light present to quickly changes to blue but no backlights.3.Then an hour ago i checked again , came on standby and stayed until i pressed the power button which changed to power on (blue)4.As far as the led driver circuit goes voltage at output in standby was 38v , power on led light up voltages rise 58v-68v...
    03-01-2024, 06:07 AM
  • karlp028
    MSI Z390-A PRO missing VCORE voltages
    by karlp028
    I've got an MSI Z390-A Pro motherboard that starts up fine, but it's missing the VCORE (and VGT) voltages. All of the other voltages are present (e.g. VCCSA, VCCIO) and I know the CPU (i7-9700k) is good. Now, the original PWM controller (UP9521P) had an internal short and I replaced it with a new one. All of the enable signals look good. The problem seems to be the PWM signals going to the MOSFET drivers. I checked them with an oscilloscope and they are all flat 1.5V with no pulses. I don't know why this would be and I'm not sure where to look next.
    06-23-2025, 01:25 AM
  • Loading...
  • No more items.
Working...