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Phillips TV model 27PT6442/37, Ch. LO4.UAA draws 12A on startup

Discussion in 'Electronic Repair' started by [email protected], Mar 2, 2007.

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  1. Guest

    This set came in with an open fuse, a T4E-250V small fuse. I'm not
    familiar with this designation but it looked like a normal "AGC" type
    element so I replaced it with one of those standard blo types. It
    started up a few times and looked fine before eventually taking out
    the new fuse. Each time it started though it was with a loud initial
    hum from the degausing coils. Thats when I looked for and noticed the
    12A surge on startup. After the thermistor apparently heated up though
    the run current dropped to low normal conditions. I've seen this in
    some Panasonics and I think some Sony's where replacing the thermistor
    made no difference. The remedy was simply to install a slo blo type
    fuse. Before I go replace the thermistor on this set, is this a
    similar situation? Thanks, Lenny Stein, Barlen Electronics
     
  2. Dani

    Dani Guest

    Symptom:
    Dead set. Open AC line fuse, 1500. Replacement may blow again.
    CLUE If degaussing coil is unplugged fuse blows will stop.

    Cause:
    Current parameters of degauss resistor and degauss coil

    Remove degauss resistor 3523 (white rectangle) and replace using
    location 3507 with service code 2122 663 00019, a 3 ohm PTC resistor.
    Give close attention to the marking on the CBA for 3507.
     
  3. Guest

    Thanks very much for the tip I'll check with my distributor in the
    morning. Lenny
     
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