[TV] Re: Sony KV35S65 SAMS 4699

["lynnslb" <lynnslb@xxxxxxxxxxxxx>]

This ought to stirup some interest.






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[TechAssist] Re: Sony IK problem bypass
From: "LeRoy Westlund" <llw@xxxxxxxxxx>
To: "TechAssist" <techassist@xxxxxxxxxxxxx>
Date: Tue, 7 Sep 2004 13:00:29 -0600
Jim,
Here are 3 posts that I saved on that bypass.
I think you can use either 18K, or 27K resistors. The values are not
critical.
You can also shift the values to help balance the gray scale, due to one
tube being weaker then the others.

HTH,
LLW

**********************
http://www.comunidadelectronicos.com/articulos/IK.htm

This is the full article Jorge Miret of J.C. Electronic Repair posted
recently. The modification uses 1N4148 diodes and is simple enough to
implement right on the CRT board. Thanks Jorge.
***********************************************************

I tried this on a KV32S15 and it does work, value is not critical, I used
three 27K resistors. Like Jeff said, the picture fades in as the filament
warms up like a normal TV used to do and also the sleep/timer led no longer
flashes as it warms up. This is NOT going to fix the weak gun of course but
in some cases the owner could get another year or two out of the set this
way. Finally, a simple way to defeat the IK problem.
**************************************************************

Take three 18K resistors and connect one end of each to the Red , Green and
Blue Cathodes , the solder the other ends all together.

This works perfect , you can see the image come up as the filaments warm up.

Image looks like crap because of the dead green cathode BUT picture is not
flashing....and that is all the customer wanted..

LeRoy Westlund
Westlund TV & Electronics
97 North Main                                "Where there's a will,...
Centerfield, UT 84622-0087           There's always a way."
Ph./Fax  435-528-3822
mailto:LLW@xxxxxxxxxx

-----Original Message-----
From: becyn <becyn@xxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
Date: Tuesday, September 07, 2004 11:42 AM
Subject: [TechAssist] Sony IK problem bypass


>Hello,
>A while back Someone had posted a drawing with text for this modification.
I have a set here that I would like to try it on, but now i can't find it.
Anyone know where it is?
>Jim McVey
>McVey Alltronix
>327 Broadway
>Newburgh N.Y. 12550
>
>Factory authorized
>service for over 20
>major brands.
>845 561 8383
>


----- Original Message ----- 
From: "danny williams" <wizhd@xxxxxxxxxxxxxxxx>
To: <tv@xxxxxxxxxxxxxxx>
Sent: Thursday, September 16, 2004 4:52 PM
Subject: [TV] Re: Sony KV35S65 SAMS 4699


> The ones i've encountered have kept hv, just shut down video to crt."aka"
ik
> blanking. yes arching will certanly cause micro to shutdown hv drive.
Dan
> W
> ----- Original Message ----- 
> From: "Wayman Simmang Sr." <waymansr@xxxxxxxxxxxxx>
> To: <tv@xxxxxxxxxxxxxxx>
> Sent: Thursday, September 16, 2004 4:47 PM
> Subject: [TV] Re: Sony KV35S65 SAMS 4699
>
>
> > Hi Techs: I notice a 32" Sony showed up today with the same symptoms I
> have been trying to get rid of for the better part of this year so far.
> Symptom: plays perfectly no problem whatever, but at random times,
possibly
> days apart or more the picture and raster will disappear leaving the sound
> perfect and changing the channels perfectly. I have been advised that it
> might be an IK problem caused by the picture tube being weak. It shows no
> signs of weakness. I have found that the high voltage and horizontal
> deflection have ceased. Cant find anything wrong with the horiz output or
> drive. There is no drive when this happens so I replaced IC351 which
> includes the horiz drive signal and checked it with the scope. Changed
parts
> in the horiz drive and checked to see that the IC351 had its 9V. power
when
> the set is down. It does.  What I would like to know is when IK kicks in
is
> the horizontal drive supposed to be cut off. And do you think it might be
> cause by the picture tube arcing !
> >  imperceptibly. Thanks for any help.. My customer must hate me because I
> cant find the problem. Wayman at Simmang's TV
>
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