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basshound
Joined: 22 Oct 2008
Posts: 3
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 Posted: Wed Oct 22, 2008 5:07 pm Post subject: help hitachi 50gx20b convergence problems |
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I have done some reading , have a mechanical/ electrical background
( automotive) and was wondering if someone could point me in the right direction.
The reds in the top left of the screen cannot be adjusted with the digital array adjustment . it is way low. From what I have read it may be the convergence IC"S. I looked in the back of the set and see several boards and cannot seem to identify the convergence IC's. I also don't have a manual. Any help would be appreciated. Oh yes I am in Canada, so if I need to locate parts I am looking to avoid cross border broker headaches. |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Wed Oct 22, 2008 6:04 pm Post subject: |
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| Should be STK392-110 or 150's. |
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Guest
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| Posted: Sun Nov 09, 2008 10:00 am Post subject: |
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So I replaced the convergnece ic's and resistors, the color in the top left is ok now but now when I try to adjust the digital array the left and right center crosshaiars are in too far. The red and blue will not move in far enough. the screen looks bowed inward at the middle like this ) (
Picture looks good at the top but sides colors are bleeding. |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Sun Nov 09, 2008 8:17 pm Post subject: |
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| Check your email. |
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basshound
Joined: 22 Oct 2008
Posts: 3
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| Posted: Mon Nov 10, 2008 1:16 am Post subject: |
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| Got your email Minnie where do I start?? |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Mon Nov 10, 2008 4:44 am Post subject: |
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| basshound wrote: | | Got your email Minnie where do I start?? |
Enter the convergence service mode by pushing the button on the board. It's not easy. Read, read, and reread. Green is the base, adjust red and blue to green. The easy cheat, reinitialize the sensors but taking a chance. |
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basshound
Joined: 22 Oct 2008
Posts: 3
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| Posted: Thu Nov 20, 2008 12:53 am Post subject: |
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Well I read and read and reread. Tried adjusting as per manual but cannot get straight lines now it is way worse than it ever was. Is there any way to go back to factory default? It doesn't have magic focus. I am starting to get very frustrated.  |
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minnie
Joined: 18 Aug 2005
Posts: 2880
Location: Hell
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| Posted: Thu Nov 20, 2008 4:46 am Post subject: |
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| Call for service. |
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