Connect with us

Panasonic microwave

Discussion in 'Electronic Repair' started by mrhoef, Sep 13, 2005.

Scroll to continue with content
  1. mrhoef

    mrhoef Guest

    Panasonic NN A773 combi oven on 240 V. The (internal) fuse blows when
    cooking (microwave) cycle starts. The oven is brandnew and gave in after
    about 20 min usage.

    I opened the thing up to firdst discharge the High voltage cap, but there is
    none obviously present?? I have fixed several microwaves but this one seems
    to be a bit more sophisticated. Is the HV cap integrated with the magnetron?

    I have checked the door switches and they seem OK. No signs on the HV board
    of burning or melting. However the rectifier has no resistance over the AC
    pins, but looks clean and no signs of any shortcuts while it blew a 13 A
    fuse in a fraction of a second.

    Anyone any suggestions about the HV cap and suggestion what else to check.

    gerard
     
  2. Dave D

    Dave D Guest

    It's brand new- put the covers back on and get it fixed under warranty. Of
    course, you may well be told the warranty is void if they realise you've
    been inside.

    Dave
     
  3. mrhoef

    mrhoef Guest

    No warranty, Dave; Still brandnew
     
  4. Jerry G.

    Jerry G. Guest

    Some possible causes can be a defective capacitor, defective magnetron,
    defective HV diode, or defective power transformer. It is also possible that
    there may be a door switch that is causing problems.

    If the unit is new, there should be a warranty with it!

    --

    Jerry G.
    ======


    Panasonic NN A773 combi oven on 240 V. The (internal) fuse blows when
    cooking (microwave) cycle starts. The oven is brandnew and gave in after
    about 20 min usage.

    I opened the thing up to firdst discharge the High voltage cap, but there is
    none obviously present?? I have fixed several microwaves but this one seems
    to be a bit more sophisticated. Is the HV cap integrated with the magnetron?

    I have checked the door switches and they seem OK. No signs on the HV board
    of burning or melting. However the rectifier has no resistance over the AC
    pins, but looks clean and no signs of any shortcuts while it blew a 13 A
    fuse in a fraction of a second.

    Anyone any suggestions about the HV cap and suggestion what else to check.

    gerard
     
  5. Dave D

    Dave D Guest

    Well, it's none of my business of course, but I'm curious- how come? Has it
    been boxed and unused for a period which exceeds the warranty? If it's just
    that you don't have the receipt or paperwork, I'd still contact the
    manufacturer/supplier, they may repair it as there's bound to be a date code
    somewhere.

    Dave
     
  6. mrhoef

    mrhoef Guest

    If you are so curious, I will have to satisfy you. The unit is dented on one
    side and posh retailers like Marks & Spencers don't sell them off cheap in a
    bargain corner, so they get sent to an auction where anyone can buy them. It
    is a cheap, but risky buy, since you dont' know what is wrong with the
    merchandise and clearly there is no guarantee or warranty.
     
  7. Bob Shuman

    Bob Shuman Guest

    Check the warranty with the manufacturer, not the retail establishment. I
    had purchased a slightly dented Frigidaire refrigerator a few years back and
    the ice maker never worked so we contacted the manufacturer and they honored
    the warranty. They sent out a field tech, but he could not figure out the
    problem, so they sent us a brand new (undented) unit and took away the old
    one.

    Bob
    ..
     
  8. Jim Adney

    Jim Adney Guest

    I don't think Panasonic cares where you bought it, or for what price.
    I would expect it to still be covered by their warrantee.

    -
     
  9. Dave D

    Dave D Guest

    I like the sound of this place!
    Not with the auction house, no, but if you bought it in the UK (assumption
    drawn from the M&S reference, sorry if I'm wrong), your statutory rights
    should be unaffected, provided the damage is not so great that it could have
    caused the fault. For example, if the force that caused the dent also
    cracked a PCB or destroyed the magnetron, they'd be within their rights to
    refuse to honour the warranty.

    I'd try the manufacturer and see if they're interested, what do you have to
    lose?

    Dave
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-