Question about Apex Digital GB4308 43" Rear Projection EDTV-Ready Television

3 Answers

Apex gb4308 43 inch projection tv

Gents. I have a problem with my tv. overnight it changed from good picture to horizontal line 3/4 way up the screen with angled vertical picture and color distortion. Any ideas?
Thanks
Riley

Posted by on

  • rmyers_ve Feb 18, 2008

    Thanks, where can I get repair parts for this model tv, also it has affected the sound, there is a humming or buzzing that was not there before.
    riley

  • rmyers_ve Feb 18, 2008

    will do, thanks very much R.

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3 Answers

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  • Master
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It looks like the convergency ICs failed on your TV. The IC numbers are STK 392-040, they are mounted on a big heatsink.
This may not be a DIY project, so I would suggest to take the TV to a repair shop.

Posted on Feb 18, 2008

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  • Master
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May be due to improper fast power-on. Power off the projection TV, then
power it on again.

Replace the convergence IC and check power resistor for leakage, if values are not exact replace them. Once the parts are in place perform the alignment.

Posted on Feb 18, 2008

  • micromaster
    micromaster Feb 18, 2008

    CRX3401 is the chassis designator for bridge rectifier in the power supply. Check your board again for correct resistor designator.

  • micromaster
    micromaster Feb 18, 2008

    Hello, another one kindly go to your manual and see pp.23 about WATCHING PIP.



    thanks

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  • Apex Digital Master
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This is not my main field of expertise, in any case here is the link for a solution to same problem and same model. According to expert the problem is related to vertical chip fault.

http://www.fixya.com/support/t142256-apex_gb4308_multi_colored_horizontal_bow

hope it may help you

cheers

Posted on Feb 18, 2008

  • Ginko
    Ginko Feb 18, 2008

    where are you located?

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