Mitsubishi PD-4225

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • Jessebsbll
    Member
    • Sep 2011
    • 21
    #1

    Mitsubishi PD-4225

    I have a Mitsubishi PD-4225 that I am trying to repair. There is no picture but it has audio. The Y top and bottom scan boards have been replaced and the Z-sus board has been replaced by the guy I purchased it from but he gave up because he didn't want to put anymore money into the TV. All I really have to test boards is a multimeter and am not sure how to test the Y-sus board. I do believe it is the y-sus board but I want to be certain before I pay $150 for the board. Any help would be great!!
    Attached Files
    Tags: None
    • Jessebsbll
      Member
      • Sep 2011
      • 21
      #2
      Re: Mitsubishi PD-4225

      Here are some additional pictures of the Y-sus board. Does anyone have input whether my thinking is right along the lines of the y-sus board being bad? If so how can I go about testing it with a multimeter?
      Attached Files

        Comment

        • PlainBill
          Badcaps Legend
          • Feb 2009
          • 7034
          • USA
          #3
          Re: Mitsubishi PD-4225

          It could be a number of things. As old as that TV is, I wouldn't recommend putting much money into it.

          The plasma panel and drive cards (logic, sustains, and buffers) are from LG. There is a collection of training manuals available on Elektrotanya. I'd suggest studying them.

          Unfortunately, while the training manuals will give some information on troubleshooting, they do not go into depth on the circuitry involved. A multimeter won't be much help, to see any activity you would need an oscilloscope that can handle at least 200 Mhz.

          PlainBill
          For a number of reasons, both health and personal, I will no longer be active on this board. Any PMs asking for assistance will be ignored.

          Never be afraid to try something new. Remember, amateurs built the ark. Professionals built the Titanic.

            Comment

            Previous template Next

            Related Topics

            Collapse
            • Tynan Dill
              Vizio e601i-A3 - Has Sound and Display, But No Backlight - Bad Power Supply Board or Bad LED Bulbs ?
              by Tynan Dill
              I was given this TV from my great uncle. He said it just wouldn't turn on one day out of nowhere, replaced the TV, and gave it to me to possibly fix and use for myself.

              Upon bringing it home and plugging it up, it showed a standby light.

              I powered it on and without a flashlight, the display showed the "V" but the lighting is very dim, but visible.

              The screen seems to blackout and stay black, but with a flashlight I can see the display.

              With my Playstation 4 connected via HDMI, and running a game I can hear sound.

              Assuming...
              ORIGINAL POWER SUPPLY BOARD
              7 Photos
              11-22-2024, 01:46 PM
            • m1ch43lzm
              HP Pavilion 15-eh Board DAG7HAMB8F0 - CPU throttling to 0.4GHz (PROCHOT_EXT) and black screen
              by m1ch43lzm
              Hi, this is my personal laptop, which the original board (lets call it Board A) blew up PU8700 (TPS51486), making a hole on the board, i had left the laptop at my desk one day with the battery fully charged and didn't touch it for a week, but when i tried to turn it on it didn't
              Thought the battery was dead, so i plugged in the charger then tried to power on, the power LED blinked once, charged LED still orange, unplugged the charger, plugged in again and I noticed the "magic smoke" smell, so i unplugged the charger, removed the back cover and saw the blown IC (the "magic...
              05-12-2025, 08:37 PM
            • howardc64
              TCL 55S425 few horizontal lines, potential failure on both side of panel/buffer board
              by howardc64
              All left and right refers to looking from rear of TV (or looking from front with TV upside down)
              • TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
              • Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault
              ...
              07-24-2025, 05:17 PM
            • sam_sam_sam
              Mitsubishi CNC switching power supply board dead / relay board bad diode failure
              by sam_sam_sam
              I was working on this CNC machine today found no keyboard functioning no control relay powering on
              The screen powered on and was giving an operation error but the manual was not very clear about what the error exactly was but with a little bit of troubleshooting and finding out that the control relays not powering on and no keyboard functions we narrowed down to this one switching power supply which of course does not have any indicator LED light they are on the keyboard interface/relay controller board

              Found shorted diodes on main controller relays there are 3 of them that...
              01-07-2023, 05:43 PM
            • Hakuu
              LG OLED77G1PUA - No Video / Audio after a TCON Board change and Software Update
              by Hakuu
              Hi There,

              This TV was auto switching off after few seconds with some vertical lines on the screen, so got a new TCON board and replaced it.

              After replacing the TCON board it was working fine and i set it up with everything, used for few hours, then had the bright idea to update the software on it. During the update process, TV switched off and now no audio or video. No relay switch sound.

              More Details

              TV Model - LG OLED77G1PUA

              Got the same exact TCON board from TVPartsToday and replaced it. But didnt transfer the EPPROM data (didnt...
              07-12-2023, 02:37 PM
            • Loading...
            • No more items.
            Working...