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RCA 27" dead, won't start!

Discussion in 'Electronic Repair' started by Dani, Dec 4, 2006.

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  1. Dani

    Dani Guest

    RCA Model # F27665YX1 Chassis # CTC203AX, with onboard tuner, & one
    ribbon Gemstar module, dead, nothing blown, standby voltages ok. + 139
    volt,+ 33 volt, - 11.9 volt, + 2.4 volt,
    & + 5 volt are all ok, but no + 12 volt input to U14104. At startup, as
    the unit tries three times to come on, I get about + 7 volts that
    momentarily comes up, & drops right away. Even with a low current
    source applied to U14104, the unit won't start. I replaced the flyback
    with a "known good one". I don't have a "known good" Gemstar module,
    but I took it out, & tried another one, still no
    go. Cr 14701 flyback secondary was the cause of a set with a similar
    problem, but this one got me stumped. Any ideas anyone? Thanks, Dani.
     
  2. Guest

    Dani:
    I had a CTC203 like that a year ago.
    It turned out that the LM317 voltage regulator on the Gemstar was
    defective.
    Hope this helps...
    John
     
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