Announcement

Collapse
No announcement yet.

Identifying IC & troubleshooting TP.MS3463S.PB782

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

    Identifying IC & troubleshooting TP.MS3463S.PB782

    I have trouble with this psu, l'm suspecting pwm ic is the problem, but i can not find it's datasheet, or anything. The picture is from service manual of tp.ms3463s.pb801, mine board is pb782, l'm guessing it's similar, if not exact as mine.. So what is UB101?
    Attached Files

    #2
    Re: Identifying IC & troubleshooting TP.MS3463S.PB782

    Here is what I found

    https://www.yoycart.com/Product/534309773654/

    But could not find the data sheet for it

    It might not be what you are looking for I do not know
    Last edited by sam_sam_sam; 06-13-2019, 06:23 PM.
    9 PC LCD Monitor
    6 LCD Flat Screen TV
    30 Desk Top Switching Power Supply
    10 Battery Charger Switching Power Supply for Power Tool
    6 18v Lithium Battery Power Boards for Tool Battery Packs
    1 XBox 360 Switching Power Supply and M Board
    25 Servo Drives 220/460 3 Phase
    6 De-soldering Station Switching Power Supply 1 Power Supply
    1 Dell Mother Board
    15 Computer Power Supply
    1 HP Printer Supply & Control Board * lighting finished it *


    These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

    1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
    2 Hem Saw Computer Stack Board

    All of these had CAPs POOF
    All of the mosfet that are taken out by bad caps

    Comment


      #3
      Re: Identifying IC & troubleshooting TP.MS3463S.PB782

      It looks like a LD7536RM, I think I found the correct one.
      Attached Files
      Last edited by R_J; 06-13-2019, 07:51 PM.

      Comment


        #4
        Re: Identifying IC & troubleshooting TP.MS3463S.PB782

        Originally posted by R_J View Post
        It looks like a LD7536RM, I think I found the correct one.
        I too do not know if it's that one, but l found simmilar 0cl 308 b4 marking, and gave it a try, of course when i removed old one that was fried, indeed, measuring on green picture.
        Replaced it, 15V was not steady, no stb power or 12V rail.. Changed optocoupler, and diode on secondary side of optocoupler, you have red cicled on pic what was changed. Anyway, it's working now, thank you for leading me to another succesfull job
        TV tuner seems to cant find any channels, i guess thunderstorm fried tuner too?
        Attached Files

        Comment


          #5
          Re: Identifying IC & troubleshooting TP.MS3463S.PB782

          Well I am glad you were able to fix it great job
          9 PC LCD Monitor
          6 LCD Flat Screen TV
          30 Desk Top Switching Power Supply
          10 Battery Charger Switching Power Supply for Power Tool
          6 18v Lithium Battery Power Boards for Tool Battery Packs
          1 XBox 360 Switching Power Supply and M Board
          25 Servo Drives 220/460 3 Phase
          6 De-soldering Station Switching Power Supply 1 Power Supply
          1 Dell Mother Board
          15 Computer Power Supply
          1 HP Printer Supply & Control Board * lighting finished it *


          These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

          1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
          2 Hem Saw Computer Stack Board

          All of these had CAPs POOF
          All of the mosfet that are taken out by bad caps

          Comment

          Working...
          X