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Philips 32PHT4032 - Damaged power supply 715G7734-P01-005-002H

PIOTREL 30441 31
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  • #1 18608176
    PIOTREL
    Level 26  
    Good morning
    This TV has the 715G7734-P01-005-002H TPV power supply
    elements are fired - transistor Q9101, U9101, C9126, R9101, R9109, D9104.
    I am asking for a diagram or identification of damaged elements.
    I found a working power supply that looks identical from the photo, except for the color of the power socket with the symbol 715G7734-P02-005-002H TPV from a 32pht4132 TV. Are these similar power supplies?
    Please let me know.
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  • #3 18608306
    PIOTREL
    Level 26  
    I was looking at this diagram. Unfortunately it is not the same.
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  • #5 18608430
    PIOTREL
    Level 26  
    There is one power supply that is very similar.
    The U9101 chip is probably the same.
    Unfortunately, there is no C9126 described there.
    But thanks a lot anyway.
  • #6 18608479
    badael
    Level 26  
    PIOTREL wrote:
    Unfortunately it is not the same.

    Which element is not the same? There may be suggestions.

    Which item is not the same? There may be suggestions.
  • #7 18608552
    PIOTREL
    Level 26  
    C9126 is not for TV 32 ", it is only for larger ones and has different capacities, T9001 is 22 or 27ohm. U9101 is also 6 and 8 pin version.
    It's so fast
    Of course, you can already draw conclusions and try to do something on this basis.
  • #8 18609357
    badael
    Level 26  
    PIOTREL wrote:
    T9001 is 22 or 27ohm

    It is not a reliable method. If there is a C9126 replace it with 100pF 2KV.
    PF6005-SOT-26
    This is not a foolproof method. If it is C9126, replace it with 100pF 2KV.
    Attachments:
  • #9 18609371
    PIOTREL
    Level 26  
    Of course, I meant R9001 22 or 27 Ohm
    Ok I understand 100 pF 2KV
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  • #10 18610422
    badael
    Level 26  
    PIOTREL wrote:
    I meant R9001 22 or 27 Ohm

    That it is not a fault in the resistor mark? Where is it? R9101 you think?

    That it is not a resistor mark fault? Where it is? R9101 do you think?
  • #11 18613339
    PIOTREL
    Level 26  
    This resistor is also damaged, as are the listed elements.
    I have already ordered damaged parts.
  • #12 18617400
    cysiekw
    Level 42  
    PIOTREL wrote:
    This resistor is also damaged, as are the listed elements.
    What a coincidence, on Saturday I took out the same power supply, of course, it was more practical, the same as for you, a mosfet, a resistor and a capacitor, 4 years and a pad. Write that he is from WLKP ;)
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  • #14 18620927
    PIOTREL
    Level 26  
    cysiekw wrote:
    PIOTREL wrote:
    This resistor is also damaged, as are the listed elements.
    What a coincidence, on Saturday I took out the same power supply, of course, it was more practical, the same as for you, a mosfet, a resistor and a capacitor, 4 years and a pad. Write that he is from WLKP ;)


    Yes, I am from WLKP

    Added after 2 [minutes]:

    badael wrote:
    C9126 is the main culprit. Solder like this.

    C9126 is the main culprit. Yes soldered.

    You are right, the culprit is the replaced capacitor, as in the LG 32LN540 model
  • #15 18994744
    Marro
    Level 11  
    Hi / Hi

    I join the topic.
    I lost such a power supply in a two-year-old TV. / PSU dead in two-years-old TV.

    I will buy a set of parts: / I would like to buy set of components:
    D9104 1N4148W SMD
    Q9101 TK6A65D THT
    U9101 PF6005AG 6PIN SMD
    R9101 0.27R 2W THT
    R9109 10R 0805
    R9110 47R 0805
    R9113 1K 1 / 4W 1206

    Can someone help? / Can anyone help?
    For me, the C9126 is OK. Do you want to replace it anyway? / In my TV C9126 is ok. Should I replace it anyway?

    @badael:
    Why do You suggest such modification? Will that help for future?

    greetings
    Marcin.
  • #16 18994814
    PIOTREL
    Level 26  
    Hi
    Yes replace this capacitor.
  • #17 20683984
    Aaoki77
    Level 1  

    >>18994744
    Are all the elements working after the upgrade? I have the same issues and I'm considering following the parameters from your post.
  • #18 20705465
    Marro
    Level 11  

    Hi.

    Yes, the TV works so far.
    I also did as @badael advised.

    I suggest checking the motherboard first to make sure it's not damaged before replacing it.
    I also have some parts left over if you're interested.
  • #19 20880855
    blaadee man
    Level 12  
    Hello, For all those following, the topic is not closed. Ultimately, I wanted to find out where, after repairing such a power supply, it would be worth inserting an additional fuse (because the original one did not work, whether in parallel with the C9126 capacitor, or immediately at the output of the transformer supplying power to the entire system that fails) so that there would be no repeat in about 2 years+, or whether changing the capacitor in the original C9126 100pf power supply without repairs from 1KV to 2KV will do anything, or is this a defect that is designed so that after some time the TV has been working, it must be fixed, because these are all similar Philips power supplies that fail in the same way and are even repair kits :) ?
    Damaged component on a circuit board with capacitors and a resistor. Close-up of a printed circuit board with electronic components, including capacitors and copper traces. Close-up of a circuit board with visible capacitors and resistors.
  • #20 20882380
    PIOTREL
    Level 26  
    An additional fuse, wherever it may be, will not help.
  • #21 21049058
    Syberek
    Level 16  
    I also have a problem with this power supply. The motherboard and backlight seem to be ok. Both run on an external power supply. I replaced the 100pF 1kV capacitor and soldered it as recommended by the colleague above. The power supply starts. the motherboard turns on, but only if there is no backlight connected. With the backlight, the power supply constantly stops and starts again. It lacks current efficiency, I suspect. What else can be checked?
  • #22 21049286
    blaadee man
    Level 12  
    If this capacitor failed, it was probably a transistor and a resistor and a small part on the other side. Have you checked these elements to see if they are functional? you can see everything in the photos above. There are repair kits on Allegro for these power supplies, costing about PLN 100. I bought a used, functional power supply 715G7734-P03-005-002H and it already has the larger blue capacitor and the R9101 resistor is a bit larger. The factory one was 715G7734-P02-005-002H.
  • #23 21049316
    Syberek
    Level 16  
    The capacitor did not fail, because the meter showed its capacity normally. However, it was cracked, so I replaced it and soldered it as recommended by the guy above. R9101 0.27R had increased resistance, so I replaced it and the power supply seems to be working, because 12V and 18V appeared for the LEDs. I checked the LEDs on the power supply and at 18V they consume 450mA. I checked the small stuff you mentioned and it also seems good. Unfortunately, when the LEDs are connected, they only flash and the power supply constantly resets ;/
  • #25 21049465
    Syberek
    Level 16  
    I didn`t replace them because both the diode and resistors have the right value. If the controller was damaged, would voltages appear at all?
  • #26 21049478
    Wojtek M
    Level 39  
    You can clearly see "fires" on them (not on the diode), but if there are such effects, everything needs to be replaced, probably the controller, and the optocoupler should also be checked. The measurement of elements is only reliable after desoldering.
  • #28 21049579
    gulson
    System Administrator  
    This is a request for your input, because at this point it`s just a joke on your colleagues who are trying to help.
  • #29 21049593
    Syberek
    Level 16  
    There are no marks on any of the elements, so I don`t know what these photos are for. We`re talking about exactly the same power supply, so what`s the point? However, I will get up in the morning ;)
  • #30 21049825
    badael
    Level 26  
    Syberek wrote:
    The power supply starts. the motherboard turns on, but only if there is no backlight connected. With the backlight, the power supply constantly stops and starts again. It lacks current efficiency, I suspect. What else can be checked?

    Although it looks correct, replace R9101 0.27R 2W.
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Topic summary

The discussion revolves around the Philips 32PHT4032 TV, specifically its power supply unit (PSU) model 715G7734-P01-005-002H, which has experienced component failures including transistor Q9101, U9101, capacitor C9126, and resistors R9101 and R9109. Users seek diagrams and identification of damaged elements, comparing the PSU with a similar model 715G7734-P02-005-002H from the 32PHT4132 TV. Various users provide insights on component replacements, suggesting that C9126 is a common failure point and recommending a 100pF 2KV capacitor as a substitute. The conversation also touches on the reliability of repairs, the need for additional fuses to prevent future failures, and the importance of checking all components for functionality. Some users report successful repairs while others continue to troubleshoot issues related to current efficiency and component compatibility.
Summary generated by the language model.
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