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CTC203CA10, Gemstar trouble ?

Discussion in 'Electronic Repair' started by Bill, Sep 18, 2003.

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  1. Bill

    Bill Guest

    Hello folks- The Guide + menu on this set keeps coming on by itself
    when connected to cable. At some point it will go into the audio menu
    and mutes the sound. While the menu changes on the screen (all by
    itself) I can't use the front controls. Is this a typical Gemstar
    going south ? If so, can I simply disconnect it and use the TV
    normally without the Guide + ? My customer doesn't care about this
    feature. Thanks

    Bill
     
  2. JURB6006

    JURB6006 Guest

    This may also be an issue with the data the coble co. is sending, or the EPROM.

    JURB
     
  3. David

    David Guest

    The Gemstar4 module is the entire system control in the later CTC203 sets,
    without it the set simply will not function at all.

    FYI early Gemstar 4 modules were so bad in failing that a very large number
    of them were replaced under warranty.

    David
     
  4. Tedd Doda

    Tedd Doda Guest

    :> The Gemstar4 module is the entire system control in the later CTC203 sets,
    :> without it the set simply will not function at all.

    I just got one in that doesn't have U13101, which I assume
    is totally controlled by the Gemstar unit. Came in with no
    power. The customer first noticed that the set would loose
    video, but the audio would stay.

    :> FYI early Gemstar 4 modules were so bad in failing that a very large number
    :> of them were replaced under warranty.

    This one was manufactured March, 2002, and the dealer said
    that it is out of warranty. Chassis # CTC203AA9, model # F27669.

    There is no data on any of the Gemstar connections, or pins 5
    and 6 of the eeprom when the set is plugged in. Is there any
    way to determine that the Gemstar is the culprit?

    All voltages from the SMPS are fine, and the 12 volt SMPS
    regulator works when Q14104 os bypassed.

    Any ideas?
     
  5. Tedd Doda

    Tedd Doda Guest

    :> There is no data on any of the Gemstar connections, or pins 5
    :> and 6 of the eeprom when the set is plugged in. Is there any
    :> way to determine that the Gemstar is the culprit?

    Update:

    I decided to take the Gemstar unit apart, and found that
    many of the 34 pins coming from the main chassis were
    very badly soldered.

    I reflowed all 34 pins and the set is up and running once again!
     
  6. john

    john Guest

    Tedd Did you get the info i sent you ?

    kip

    va3mm
     
  7. Tedd Doda

    Tedd Doda Guest

    :> Tedd Did you get the info i sent you ?

    Yup...sure did. Thanks. I replied via email as well.
     
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