[TechAssist] Re: av48wp30 red convergance problem

  • From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Sun, 9 Jan 2005 10:50:14 -0500

Next step is to swap the convergence yoke plugs. Convergence will be way 
out, but take
note if you see a bow.
I haven't seen convergence related problems on these, yet.
Jeff
--
Intrepid Video TV/VCR Repair
263 S Front St, Steelton PA 17113
717-939-7708; (F) 717-564-4952

----- Original Message -----
From: "D Trippel" <dtrippel@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Saturday, January 08, 2005 6:17 PM
Subject: [TechAssist] Re: av48wp30 red convergance problem


Hello!
R842 and R843 are good . I swapped ic804 for ic805 assuming the blue 
would bow,but the red
is
still severely bowed on the right side of the screen, while the green 
and blue are
straight.
Any ideas? thanks
Don

Intrepid Video Support wrote:

> Don,
> >From JVC  site:
> Symptoms:Unit's red convergence is skewed left, image is unclear.
> Cause:Defective red convergence STK on the convergence board. My unit also 
> had burnt
R842
> and R843 on the convergence board.
> Cure:Replace the STK IC5804-05, R842 and R843, and my unit also had a bad red 
> CRT which
I
> believe caused this IC and resistors to blow. (After changing the IC and 
> resistors, the
> heatsink got very hot, so changing the red CRT fixed that problem.)
> Jeff
> --
> Intrepid Video TV/VCR Repair
> 263 S Front St, Steelton PA 17113
> 717-939-7708; (F) 717-564-4952
> www.intrepid-video.com  www.tech-repair.net
> ----- Original Message -----
> From: "D Trippel" <dtrippel@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, January 07, 2005 8:06 PM
> Subject: [TechAssist] av48wp30 red convergance problem
>
> Hello everyone!
>
> I received an jvc av48wp30 tv in today, the set has been in another
> shop. It looks like they replaced ic804 and ic805. Both are
> (stk392-110). The red convergence is way off. Am I in for a big headache
> or is there another component that tends to fail in these sets. I
> checked all  resistors on the convergence board and all appear to be
> fine. Any help would be appreciated. Thanks!
>
> Don Trippel
> Don's Electronics
> Rosthern,Sask
> Canada
>
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