Philips 40PFL4908/F7 Dead

Collapse
X
Collapse
 
  • Page of 1
  • Time
  • Show
Clear All
new posts
Previous template Next
  • HMRG123
    Member
    • Jun 2017
    • 20
    • United States
    #1

    Philips 40PFL4908/F7 Dead

    Have this set and the customer said it just would not turn on one day. Q601 is shorted, R611 and F602 are open. I do not see anything else as bad. Does anyone know of anything else I should check before replacing these parts?

    OOPs, just rechecked and found D653 shorted...same question: Does anyone know of anything else I should check before replacing these parts?
    Last edited by HMRG123; 04-20-2019, 08:52 PM.
    Tags: None
    • neilc6
      Badcaps Legend
      • Nov 2015
      • 1550
      • Canada
      #2
      Re: Philips 40PFL4908/F7 Dead

      The power supply on this model is probably similar design.

      https://www.badcaps.net/forum/showthread.php?t=72916

        Comment

        • Unspun01
          Badcaps Veteran
          • Jun 2011
          • 333
          • Canada
          #3
          Re: Philips 40PFL4908/F7 Dead

          You will want to check and replace at least the following parts:

          F602 (fuse, 2.5A, 250V),
          Q601 (MOSFET transistor, N-channel, 7A/600V),
          D608 (zener diode, 36V, 1Watt),
          R611 (Fusible Resistor, orange, black, silver, gold = 0.3ohm, 5% tolerance, 2 watt),
          D653/D655 (Schottky Diode, SB3A0 = 3A, 100V),
          D607A (zener diode, 27V, 500mW)
          Q602 (2SC5344SY = BJT NPN transistor, 800mA, 30V, SOT-23)

          D607A and Q602 are small surface mount parts on bottom of board.

          See attached service manual.
          Attached Files

            Comment

            Previous template Next

            Related Topics

            Collapse
            • kew1701
              Philips taw6205 ambilight speaker STM32 mcu dead
              by kew1701
              Resolved dead cap which burned mcu(stm32f091rct6) ,between vss and vdd on desoldered mcu is short 5.8oh,is there a way to obtain firmware from it.i have firmware,but i thing this is for wifi/bt board phorus 5 which is on top of amp board(here lies dead mcu)...my stm32 flasher is on the way....
              04-09-2025, 03:59 AM
            • Rubenlily
              Philips 50PUS6503 - dead panel? Picture
              by Rubenlily
              Hey,

              I gave up on my last TV and got a new one to try.

              Only vertical lines. Sound is OK. Screen is black with a few white lines until I change channel, then these colors gradually starts filling up the screen.

              Is this fixable in any way or should I just give up on this one too?...
              08-21-2023, 01:07 PM
            • double_DD
              How can I be sure that my EC chip is dead?
              by double_DD
              Hi all,

              As the title suggests, how can I be sure that my EC chip is really dead?

              I've recently gotten into this hobby of laptop repairs, and have successfully brought back to life a couple with some easy fixes, mostly shorted caps.

              Now I'm working on HP Probook 455 G8, that had some "devil" run around on 3V line, burning a bunch of stuff. Luckily I have a dead 455G7 (for spare parts) so I managed to fix it (swapped burned parts) to a point that it will charge (both on barrel jack and usb-c), but it doesn't want to turn on. There is a 3V3 on a keyboard...
              03-12-2025, 07:47 AM
            • vikivng
              PHILIPS 40PFL7007 TV DEAD. D501 testing SHORT on DMM
              by vikivng
              Hi guys pls can someone help with this set..
              Tv doesnt not power on.
              No standby light.
              There is a burn mark by the leg of D501 diode.
              The diode tests short in both directions.
              I have been reading this usually means the diode is faulty? As normally would be open.
              I have not yet taken voltages since this is obviously short I would like to replace it.
              Can someone help me with a substitute for this diode since it seems not to be the standard type?...
              08-22-2022, 10:51 AM
            • jimbofz
              philips 65PUS6162/05 dead no sby led
              by jimbofz
              hi to all,
              following on from earlier post ref:no boosted pcf voltage
              i managed to get a LD7591T pcf boost ic
              i now have 385v boosted volts.
              the psu produces 12v ok ,
              (and bear in mind the 5v and 3,3v supplies are produced by the main board not as shown on the psu board markings.)
              now, the tv has no sby led lit ,no backlight voltages
              my thaughts were that ths processor could be faulty,but i wanted to completely eliminate the psu first
              i checked all the supplies on the main board 1,5v,3,3v,5v, they are all ok,

              the psu voltages:...
              06-04-2022, 02:33 AM
            • Loading...
            • No more items.
            Working...