Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • advent35
    New Member
    • Feb 2014
    • 9
    • United States
    #1

    Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

    Phillips 50” Plasma 50pfp5332d/37

    I began with capacitor problems on the power supply, y main and x main(click click click), unit now starts and goes into protect mode. Traced problem to y main short to ground on the Vs circuit. I have found at least one of the 88N30W FETs shorted on all 3 legs and suspect others (I have only removed the one) and have ordered a kit to replace them. My question is could these FETs be the cause of my problem or should I look farther? I found a diode I suspect is bad also, can they be tested in the circuit?

    attached pictures of y main part number and diode (ZD5101 location)

    Thank you in advance for any help.
    Jeff
    Attached Files
    Don't let schooling interfere with your education.
    Mark Twain
    Tags: None
    • tom66
      EVs Rule
      • Apr 2011
      • 32560
      • UK
      #2
      Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

      They can cause the fault. Also check the Y-buffer upper PCB for a burnt/damage buffer IC. Common fault is for that IC to fail, which can damage Y-main, or Y-main failing which can damage the IC.
      Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
      For service manual, schematic, boardview (board view), datasheet, cad - use our search.

        Comment

        • advent35
          New Member
          • Feb 2014
          • 9
          • United States
          #3
          Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

          I tested the Y buffers, no visible damage to the IC's and could not find a short when tested with meter. That is if am checking the buffer correctly. I watched a video on YouTube for testing a different model buffer board and think that I have the right idea. From what I've read on here I think that it maybe your video (ubuntututorials).
          Don't let schooling interfere with your education.
          Mark Twain

            Comment

            • tw2005
              Badcaps Legend
              • Oct 2011
              • 6458
              • Australia
              #4
              Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

              I'd double check. by far the most common fail is shorted upper/blown ymain.

              Might be some useful info in here. shows how to test ymain with out the buffers and how to do a quick test upper + lower combined.
              Attached Files
              Last edited by tw2005; 02-08-2014, 09:44 PM.

                Comment

                • advent35
                  New Member
                  • Feb 2014
                  • 9
                  • United States
                  #5
                  Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

                  Thank you for the response and information. My buffer is a one piece board would the test points be basically the same or would you have instructions for the one piece y buffer board?

                  attached part number below;
                  Attached Files
                  Don't let schooling interfere with your education.
                  Mark Twain

                    Comment

                    • advent35
                      New Member
                      • Feb 2014
                      • 9
                      • United States
                      #6
                      Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

                      Tested from CN5407 PINS 1-24 to CN5401, CN5402, CN5403, CN5501, CN5502, CN5503.
                      The outer 6 pins marked in yellow on either end of all 6 of the connector are open loop, the others in red all test around .55 volts.

                      Is this normal?
                      Attached Files
                      Don't let schooling interfere with your education.
                      Mark Twain

                        Comment

                        • tom66
                          EVs Rule
                          • Apr 2011
                          • 32560
                          • UK
                          #7
                          Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

                          If you reverse it and get open circuit, that is OK.
                          Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                          For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                            Comment

                            • advent35
                              New Member
                              • Feb 2014
                              • 9
                              • United States
                              #8
                              Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

                              Yes the pins marked in Yellow are all open circuit with leads reversed.

                              I want to thank you both for all your help!
                              This is my first attempt at TV repair.
                              Don't let schooling interfere with your education.
                              Mark Twain

                                Comment

                                • tom66
                                  EVs Rule
                                  • Apr 2011
                                  • 32560
                                  • UK
                                  #9
                                  Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

                                  I meant the red points. They should be OL with probes reversed. Yellow are not connected.
                                  Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
                                  For service manual, schematic, boardview (board view), datasheet, cad - use our search.

                                    Comment

                                    • advent35
                                      New Member
                                      • Feb 2014
                                      • 9
                                      • United States
                                      #10
                                      Re: Phillips 50” Plasma 50pfp5332d/37 Vs short to ground

                                      I understand now, Thank you!
                                      Don't let schooling interfere with your education.
                                      Mark Twain

                                        Comment

                                        Previous template Next

                                        Related Topics

                                        Collapse
                                        • playit
                                          450watt power supply 5v, 3.3v short to ground wire,in output rail ,connectors
                                          by playit
                                          hello everyone , working zebronics power suply 450 watts , 5v ,3.3v givin short to ground black wire, also in circuit at output, resistor was charred but shows right values , after removing resistors 39ohms, 51 ohms, there was no short , no continuity beeps with ground , but after replacing new resistors (now i am not switching it on) ,again short still exists . when i put bigger ohm resistor like 100k ohm , no short beeping sound comes , lower ohm resistor gives continuity beeps ,other big ones donest , as its a working psu , i am confused what to remove now or how to go further now .
                                          ...
                                          09-02-2023, 02:43 AM
                                        • MisterAIL
                                          820-00840 / No boot / PP3V3_G3H Short to ground
                                          by MisterAIL
                                          Hello everyone,

                                          Firstly sorry for my english, french guy inside.

                                          I brought a macbook pro A1708 - 820-00840 logic board, wasn't powering on.
                                          History is a day, nothing happened when opening the laptop.

                                          Nothing special inside, no corrosion, no liquid damage, never opened.

                                          First, with the logicboard alone on the desk, mesures are :
                                          5v017 and 0.000 amp. nothing else.
                                          Finding a short on the PP3V3_G3H_VR, but not on the PP3V3_G3H (0.540 on diode mode), PPDCIN_G3H_CHGR_R present (5,1 volts) PPVIN_G3H_P3V3G3H around 4.1 volts. PM_EN_P3V3_G3H...
                                          10-13-2021, 11:42 AM
                                        • triplefour
                                          Samsung UN55ES7003 has blown fuse on TCON and short to ground.
                                          by triplefour
                                          Samsung UN55ES7003
                                          made house call.
                                          red power led comes on, blinks twice, no display, no backlight, relay clicks, repeat.
                                          psu has self test feature.
                                          disconnected from mainboard.
                                          determined PSU ok BL ok.
                                          suspect mainboard.
                                          disconnecting tcon has no change on operation.
                                          markings on mainboard:

                                          BN97-06531P 0151
                                          BN94-06123R

                                          found and ordered replacement on ebay https://www.ebay.com/itm/394077328633
                                          for 54$

                                          second house call:
                                          with replacement mainboard, tv turns on, has sound,...
                                          07-13-2022, 03:53 PM
                                        • Prott
                                          PS5 - long screw damage, via to ground layer short?
                                          by Prott
                                          Hello dear Badcappers,
                                          I came across a PS5 that was longscrewed. The screw went through the HDMI IC (which I replaced + repaired the traces it damaged), however the screw also bend the board and slightly cracked it on the other side. It still seems like it could be fixable though as the area might not have lots of traces going through it (fingers crossed).

                                          Can somebody, please, measure their board and tell me if my assumption of an inner short between the via and ground layer is correct? These 3 pads have almost no resistance. I would like to make sure those are not some data...
                                          2 Photos
                                          07-27-2024, 08:54 AM
                                        • DynaxSC
                                          Extreme High Current & Low Voltage Short Killer ??
                                          by DynaxSC
                                          Hi Folks

                                          I'm looking for a extreme high current short killer solution for a reasonable cost.

                                          I have an LGA1700 motherboard (ASUS PRIME Z790-P WiFi) where I exchanged the LGA socket already 3 times, and every time after the socket exchange I get a short of power supply lines VCORE (V variable) and VCCIN_AUX (1.8V).
                                          After taking off the socket, the shorts dissappear again.
                                          The soldermask on the socket is already partially demaged from the heat, so I have reconstructed the soldermask by manually painting the missing soldermask parts with a very small top of a...
                                          10-15-2024, 10:13 AM
                                        • Loading...
                                        • No more items.
                                        Working...