Samsung TV/VCR Combo (model CXB1322) blows 3 amp F801 fuse when power on buttom pushed

Discussion in 'Electronic Repair' started by Joe R., Dec 13, 2003.

  1. Joe R.

    Joe R. Guest

    I have a Samsung TV/VCR Combo, model CXB1322 that will blow the F801
    fuse when the power button is pushed. It was making a high pitched
    noise when it was plugged in and VCR was not working. As suggested in
    a previous post, I replaced C810 (470 Mfd cap) which corrected the
    noise problem. I checked C09 on VCR power supply and it measured .18
    Mfd (should be 22 Mfd). I replaced it with a 22 Mfd cap (non-polar).
    and everything worked fine. I turned tv on and off several times and
    all was well. The next day, I plugged the TV in and went to power it
    on, and fuse F801 on main board blew. I then pulled the power supply
    out of vcr and removed the transsistors and some of the diodes to
    check. All checked (with multimeter) good. I re-assembled the power
    supply and plugged everthing in and all worked again. The next day, I
    plugged TV in and fuse blew again. Has anyone run into this type of
    problem that can point me in the right direction.
    Thanks!
     
    Joe R., Dec 13, 2003
    #1
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  2. Joe R.

    Jerry G. Guest

    Check the horizontal output transistor, and the flyback assy.

    --

    Greetings,

    Jerry Greenberg GLG Technologies GLG
    =========================================
    WebPage http://www.zoom-one.com
    Electronics http://www.zoom-one.com/electron.htm
    =========================================


    "Joe R." <> wrote in message
    news:...
    I have a Samsung TV/VCR Combo, model CXB1322 that will blow the F801
    fuse when the power button is pushed. It was making a high pitched
    noise when it was plugged in and VCR was not working. As suggested in
    a previous post, I replaced C810 (470 Mfd cap) which corrected the
    noise problem. I checked C09 on VCR power supply and it measured .18
    Mfd (should be 22 Mfd). I replaced it with a 22 Mfd cap (non-polar).
    and everything worked fine. I turned tv on and off several times and
    all was well. The next day, I plugged the TV in and went to power it
    on, and fuse F801 on main board blew. I then pulled the power supply
    out of vcr and removed the transsistors and some of the diodes to
    check. All checked (with multimeter) good. I re-assembled the power
    supply and plugged everthing in and all worked again. The next day, I
    plugged TV in and fuse blew again. Has anyone run into this type of
    problem that can point me in the right direction.
    Thanks!
     
    Jerry G., Dec 14, 2003
    #2
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  3. Joe R.

    Joe R. Guest

    "Jerry G." <> wrote in message news:<brgfgd$kth$>...
    > Check the horizontal output transistor, and the flyback assy.
    >
    > --
    >
    > Greetings,
    >
    > Jerry Greenberg GLG Technologies GLG
    > =========================================
    > WebPage http://www.zoom-one.com
    > Electronics http://www.zoom-one.com/electron.htm
    > =========================================
    >
    >
    > "Joe R." <> wrote in message
    > news:...
    > I have a Samsung TV/VCR Combo, model CXB1322 that will blow the F801
    > fuse when the power button is pushed. It was making a high pitched
    > noise when it was plugged in and VCR was not working. As suggested in
    > a previous post, I replaced C810 (470 Mfd cap) which corrected the
    > noise problem. I checked C09 on VCR power supply and it measured .18
    > Mfd (should be 22 Mfd). I replaced it with a 22 Mfd cap (non-polar).
    > and everything worked fine. I turned tv on and off several times and
    > all was well. The next day, I plugged the TV in and went to power it
    > on, and fuse F801 on main board blew. I then pulled the power supply
    > out of vcr and removed the transsistors and some of the diodes to
    > check. All checked (with multimeter) good. I re-assembled the power
    > supply and plugged everthing in and all worked again. The next day, I
    > plugged TV in and fuse blew again. Has anyone run into this type of
    > problem that can point me in the right direction.
    > Thanks!



    Thanks,
    I already checked the HOT with a multimeter and the junctions were
    good - no shorts. Is there any way to check the flyback for shorts,
    either in circuit or out of the circuit? Could the flyback be
    intermittent?
     
    Joe R., Dec 14, 2003
    #3
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