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TEAC 420 Locked up after power brown out.

Discussion in 'Hobby Electronics' started by Mitch, Mar 13, 2005.

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  1. Mitch

    Mitch Guest

    Afternoon guys and gals,

    when the power at my place dropped to about 50 volts rms
    apon turning the STB back on I was asked for my pin. Well I entered
    same but the STB kept asking for said pin. (NOT changed from default)

    After MANY (>10) calls to the service line the blood thing still was locked.

    I was amazed that from all of the technical assistants their standard answer,
    "unlock the STB from the menu". VERY hard to do when all you have is a blank
    screen that is just asking for a pin at switch on. There was another message that also
    said ,"No or BAD signal" (that was not the case!).

    So I sat down with a cup of coffee and thought what sort of BACK DOOR would TEAC had made so that ANY pin could get overridden.

    t had to be simple, & it was.

    press the four 'top text' buttons in sequence.

    RED, YELLOW, GREEN, BLUE when asked for the pin

    Then I did a reset, rescan etc. All was normal again.

    BTW I changed the pin a few times to test this,

    Regards,
    Mitch
     
  2. Graham Marsh

    Graham Marsh Guest

    I've never heard a good report from their 1800 line. it's a waste of their resources having it set up. And never email them. they always delete your email without replying!!!
    Afternoon guys and gals,

    when the power at my place dropped to about 50 volts rms
    apon turning the STB back on I was asked for my pin. Well I entered
    same but the STB kept asking for said pin. (NOT changed from default)

    After MANY (>10) calls to the service line the blood thing still was locked.

    I was amazed that from all of the technical assistants their standard answer,
    "unlock the STB from the menu". VERY hard to do when all you have is a blank
    screen that is just asking for a pin at switch on. There was another message that also
    said ,"No or BAD signal" (that was not the case!).

    So I sat down with a cup of coffee and thought what sort of BACK DOOR would TEAC had made so that ANY pin could get overridden.

    t had to be simple, & it was.

    press the four 'top text' buttons in sequence.

    RED, YELLOW, GREEN, BLUE when asked for the pin

    Then I did a reset, rescan etc. All was normal again.

    BTW I changed the pin a few times to test this,

    Regards,
    Mitch
     
  3. And no amount of bad publicity will change companies like
    this either.....

    You could publish what you just experienced and the reset
    process on the net. That way at least some other folks will
    benefit from your solution
     
  4. Franc Zabkar

    Franc Zabkar Guest

    Out of curiosity I dumped the latest firmware images:

    http://stb.teac.com.au/pages/files/dvb420-v101.bin
    http://stb.teac.com.au/pages/files/dvb420-v103.bin

    Near the beginning of the code is a text string, something like
    "Digital Yellow Green Blue Orange". I wonder if that is significant.


    - Franc Zabkar
     
  5. Foley U. Matthews. there | I believe in : Paying NO voluntary taxes, i.e.
    are no e's in my true email | Lotteries, Gambling... The Executive Producer
    Visit the Ellen Foley Info | is to blame!... and perhaps, Love (is/can be)
    http://www.go.to/ellen-foley | "Fully expecting to be Hurt!"
     
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