[TechAssist] Re: Follow up: Sony Proj. KP-43T90 Chassis RA-3B. No video, sound ok, OSD / menu is bowed, mis-converged.

  • From: "Shoreline Electronics" <jstielau@xxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Mon, 28 Nov 2005 08:06:38 -0500

I bet you find your problem with  the A board regulators.

Please post your findings!

==========================
Jeff Stielau
Shoreline Electronics Repair
344 East Main Street
Clinton,CT 06413
860-399-1861
860-664-3535 (fax)
jstielau@xxxxxxxx
========================

----- Original Message ----- 
From: "Robinson Electronics" <RobinsonElectronics@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Sunday, November 27, 2005 9:44 PM
Subject: [TechAssist] Follow up: Sony Proj. KP-43T90 Chassis RA-3B. No 
video, sound ok, OSD / menu is bowed, mis-converged.


> Anyone have any tips or notes on this chassis, working with out a 
> schematic?
> These voltage test points G board check good:
> TP 19v. (ok)
> TP +15v. (ok)
> TP -15v. (ok)
> TP 11v. (ok)
> TP -12v. (ok)
> TP stby 5v. (ok)
> TP 200v. (ok)
> TP 135v. (ok)
> On G board connector CN202 to A board CN501
> the -5v. (ok)
> but the +5v. measures only 3.6v!
> With clip CN202 lifted +5v. measures 4.3
> Going to check the 9v. supplies on the A board tomorrow.
> Maybe someone has ran into this before, or can help?
>
> Robinson Electronics
> 1075 Sweeten Creek Road #51
> Asheville, NC 28803-1757
> Ph./Fax. 828  274-3787
> Toll Free. 1-888 ROBELECT
> www.robinsonelectronics.com
> www.robelect.com
> Mailto: RobinsonElectronics@xxxxxxxxxxx
>
> ----- Original Message ----- 
> From: "Robinson Electronics" <RobinsonElectronics@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, November 21, 2005 7:32 PM
> Subject: Sony Proj. KP-43T90 Chassis RA-3B. No video, sound ok, OSD is
> bowed, mis-converged.
>
>
>> Can one of you Sony Techs help us out with this set?
>> Set powers on with a blink code of 6 blinks, then led stays on but no
> video
>> at all, sound is ok though., and the OSD comes on but is bowed and not
>> converged. I changed both of the convergece ic's anyway (not the problem
>> though).
>> Has anyone encountered this, that can help us, or offer some possible
>> problem areas?
>> Thanks.     David.
>>
>> Robinson Electronics
>> 1075 Sweeten Creek Road #51
>> Asheville, NC 28803-1757
>> Ph./Fax. 828  274-3787
>> Toll Free. 1-888 ROBELECT
>> www.robinsonelectronics.com
>> www.robelect.com
>> Mailto: RobinsonElectronics@xxxxxxxxxxx
>>
>
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