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JVC Replacement Parts or Cross REF.

Discussion in 'Electronic Repair' started by Kev, Sep 30, 2006.

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  1. Kev

    Kev Guest

    Okay, I am in the process of repairing my JVC AV-56WP84 Rear Projection
    Television. I found component Q522 shorted which is JVC part number
    2SC5904-RL. JVC wants $45.57 for a new one. It has been quite some
    time since I repaired a television and I design electronic circuits for
    a living. Since when does it cost that much money for a transistor?
    So my questions are: 1. Where can I buy this component for a better
    price? 2. Is there a cross reference I can use?
    Here are some additional JVC part numbers I would like to cross:
    1. D932 JVC part number 31DF6N-FC5 JVC wants $10.06
    2. IC805 JVC part number STK394-220 JVC wants 48.94

    Thanks for the help
    Kevin
     
  2. Guest

    How did the set fail? Convergence IC failure usually doesn't kill the
    horizontal output. Q522
    is the output transistor, you MAY have a high voltage capacitor, or
    even the flyback MAY be bad, or just cold solder joints @ T 501
    horizontal drive transformer. Also, check C 503 2.2 uf @ 50 volt cap in
    the drive stage. Does Q522 measure shorted out of circuit? Change IC
    805, & IC804 in pairs, & don't use generic IC's. Check CP934 circuit
    protector ( ICP-N70-T), on the + 13.5 volt line. It's an IC PROTECTOR.
    2.5A.


    There are two versions of this T.V. AV-56WP84, or AV-56WP84HA ( HA
    would be at the end of the serial number).
    Look here: http://www.globalsemi.com/ Mississauga, Ontario Canada.
    2SC5904-RL is $31.97 each. Datasheet here:

    http://pdf1.alldatasheet.com/datasheet-pdf/view/83416/PANASONIC/2SC5904.html

    Hope this hepls, Dani.
     
  3. Kev

    Kev Guest

    Hello Dani
    I purchased this TV from a private party as non-working. I was told
    that Q522 (2SC50804-RL) was shorded. When I took the set apart Q522
    was missing. Currently when the set is turned on without this IC the
    front LED turns on as normal, the speakers make some noise for a moment
    and the screen is blank and all the CRT lamps are dark. So I believe I
    need to replace this IC before I spend additional time troubleshooting.
    I check most of the diodes (in circuit) with a meter and found D932
    shorted which is JVC part number 31DF6N-FC5. So my plan for now is to
    order Q522, D932 (Do you have a cross for D932?), IC804, IC805 and all
    the parts you just recommended except T501. When these new parts are
    installed I will start troubleshooting again. I am hoping nothing is
    wrong with the lamps or Picture Tubes. I will also carefully check the
    solder joints and PCB around T501.

    Kevin
     
  4. Kev

    Kev Guest

    My set is model number AV-56WP84. I am not sure what the difference is
    when the HA is added.
     
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