LG 50PQ10R Ysus board Problem and replacement parts help!

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • XaroRSA
    New Member
    • Oct 2012
    • 4
    • south africa
    #1

    LG 50PQ10R Ysus board Problem and replacement parts help!

    Greeting Forum!

    I am currently trying to fix a Plasma TV(50PQ10R-AFB).
    When starting up the TV, I can measure the main power supply going on, then disabling via the nice relay "click".
    When disconnecting the YSUS board, the main power supply does not click off.
    Upon inspection of the Ysus board, the input 4A fuse was blown, and the 30J124 IGBT's were shorted.
    All capacitors have been replaced.
    Can the forum please advise me on a equivalent IGBT that will work with this TV?
    And if I replace the IGBT's, do I need to adjust and resistors or pots?
    I also notice 2 wires that connect to the lcd driver boards, seems like a factory edit, just wanted to hear if anyone else has this? They are on the P207 connector on the YSUS board.

    The 30J124 IGBT seems to be like a dinosaur, and this is the info i could find on it.
    Breakdown Voltage VCES (V) @Ta = 25˚C ===600V
    IGBT Current Rating IC (A) @Ta = 25˚C (PULSED) ==200A
    Collector current rating (DC) == 30A
    N-channel device.

    Can anyone please advise on a replacement part? Do I need to be very concerned about the pulsed current being 200A?

    Regards and Thank you!
    Tags: None
    Previous template Next

    Related Topics

    Collapse
    • Alekov_31
      IGBT replacement
      by Alekov_31
      Hi guys, I'm repairing a welding machine which has 12 blown IGBTs in the power supply. The blown IGBTs are no longer available and has a replacement part that has lower power dissipation. The original IGBT is SGP30N60HS (250w) and the replacement is IGP30N60H3 (187w). Is there a problem to change with the replacement part or I have to search with higher power dissapation
      11-23-2023, 02:36 AM
    • boosti45
      Macbook pro logic board replacement parts quesion
      by boosti45
      i have a 2020 macbook pro 13" A2251 with 820-09149 logic board so i found an issue with chip labeled U6903 according to schem. boardview using flexBV software, so i removed it from the board and the issue im having is that the chip says "07A08FI ELC180​" on top of it but when searching for a replacement chip, i can find tons of identical looking chips that also have "ELC180" printed on them but the first set of digits is never the same so im trying to find out if i need this exact chip with these same numbers as mine and if not which ones are compatible as a replacement?...
      08-21-2024, 05:23 AM
    • samoelec
      Trying to understand how to find best replacement cap for old parts.
      by samoelec
      Disclaimer: This is the first time I step into the realm of analog electronics and my natural language is not English, so please forgive me if I failed to use the correct terms when describing things.


      Recently I purchased a Tektronix TDS1012, a 20 years old product for cheap and I thought it could be a nice opportunity for playing (i.e. recapping) and learn something in the process.
      The power supply board is exactly the same from this post so I'll just steal it for now.

      I'm trying to find replacements for all those Lelon electrolytic caps, but then quickly...
      04-01-2024, 03:39 AM
    • H H
      3090 FE Part Confirm/Identification
      by H H
      Hello,

      I'm hoping someone could help me confirm if I have identified the following parts correctly.

      Apparently the DP cable became stuck inside the graphics card and was yanked out. This caused some sort of short which burned the DP contacts and blew some resistors and ferrite beads.

      The parts needing replacement are on the back of the board behind the HDMI input.

      I have identified the parts as the following:

      C6037: MLCC 0.1uf/16v(0402)x7R W05

      R6016: RES 499 OHM 1/16W (0402) 1%

      LB10911: Ferrite Bead (0402)...
      5 Photos
      02-16-2025, 01:09 PM
    • jasonkiet
      vsx 1021K 2sb1560 replacement parts
      by jasonkiet
      Hi,

      I am a noob and have no electronic background beside those high school courses. I don't know how to read the schematic but I know the principle of resistors, transistor and capacitor. I have a Pioneer vsx-1021K which I bought new 8 years ago. Last week I was careless and shorted the center speaker wires, no smoke or anything. The MCACC light is flashing after that. So I read through this forum and watched Youtube videos, I managed locate the shorted transistor 2sb1560 (part# J5032390Y0000-IL) and 2 bad resistors 0R47 (part# N113136647820-IL). After cutting them out, I put the...
      01-13-2021, 09:26 AM
    • Loading...
    • No more items.
    Working...