Pioneer 503MXE plasma just gone BANG!!!

Discussion in 'Plasma TVs Forum' started by midlander, Mar 15, 2006.

  1. midlander

    midlander
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    :mad: :mad: :mad:

    Watching TV this morning, plasma had been on for ten minutes. There was a loud bang, which made me jump, followed by an electrical burning smell. I have completely lost the picture on the display and it will do nothing.
    I've tried all the obvious things like checking fuses, different leads, leaving it unplugged for an hour etc. I'm not an expert but I'd say the power supply has blown.
    It's three years old and out of warranty. Just had a quote from Sound and Vision in Leicester (local authorised service centre), £80 call out plus £211 labour plus parts!
    Anyone have any experience of this? Any idea of how much a power supply would be?
    Any advice would be greatly appreciated :lease:

    Regards

    Martyn
     
  2. dafinity

    dafinity
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    Yeah, mine did the same. Went pop, just loud enough to make me jump. Just red flashing led on front..

    I am getting git fixed at plasma speacialists.....

    www.repairtech.co.uk

    If it works then will flog for few quid as already got latest 506 XDE

    Thanks
    Russ
     
  3. Bernard Barnett

    Bernard Barnett
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    There's a thread on this subject with an almost identical headline to yours - a quick search should find it. Yes it's probably the PSU. Seems to be happening an awful lot with the MXE. Reportedly, if you get in touch with Pioneer they'll offer to pick up the bill.
     
  4. churchwa

    churchwa
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    Yup, Pioneer will pay for it, the power supply has a lifetime warrenty. Happened to my friends 502mxe the otherday.
     
  5. Mark1948

    Mark1948
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  6. bobcar

    bobcar
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    If it is the power supply then those quotes are outrageous. The best course if it works is to follow the advice of the others and contact Pioneer, if that doesn't work get other quotes unless you feel confident enough to fix it yourself (unlikely from the sound of it).
     
  7. Mark1948

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    Hi bobcar.

    I am more than happy and able to fix it myself, I did my Electronic Engineering degree at Birmingham and while I have not been on the bench for almost a decade the PSU used by Pioneer is a simple SOPS.

    The reason I don't is the switching FET failed G-D short and literally vapourised 2 SMT transistors (namely Q120 and Q129) and as Pioneer will not tell you what they were and no one I can find has a circuit diagram for the PSU I am stuck.

    If you know what they are or where I can get a detail circuit diagram from I would be very grateful. The usual Service manual you get has a block diagram for the PSU but no actual circuits.
     

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