[TechAssist] Re: Sony KV27FS13 Shutdown ! Schematic Needed!
- From: "Larry E." <videotech@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Mon, 07 Oct 2002 22:15:46 -0400
Jeff, don`t have anything specific on that set but I believe you can
pull up the fault codes on that set and see what the set has entered.
This is NOT the same as the service mode so be sure to push "vol minus"
in the sequence, Display,Channel,5,Volume Minus,then Power. The screen
will now show all fault codes this set has encountered and the number of
times they have occured. This might help you figure which circuit is
causing you all this grief, hth, Larry E.
Larry Eastman
American TV & Electronics
Crystal River, Fl.
Shoreline Electronics wrote:
>
> Make : Sony
> Model : KV27FS13 New ...right out of the box ( 27" WEGA/VEGA)
> Problem : Shutting down on startup. LED code blinks 2 times.
>
> Scoping the Horiz Output collectors waveform , we saw excessive ringing &
> static between H pulses. Figured the flyback was the issue. Changed
> it.....no help.
>
> A little more digging revealed D504 shorted ( ERC06-15) ....this is
> paralleled across an identical diode D501.
>
> Replaced the diode ( From a scrap set).....set fired up HV great......then
> shutdown a few seconds later. Now 4 blinks! ( Vert failure)
>
> Scoping the yoke pins...showed very little/weak drive. Changed the TDA8172
> ...used the STV sub for that.
>
> Still no fix....cycled the set a dozen or so times while checking waveforms
> the D504 shorted again !! UHG !
>
> Odd for this set to be like this right out of the box. This set was
> bought at a local casino with comp points....customer doesn't want to go
> thru the warranty routes...he's willing to pay us to do it.
>
> Is there any Sony bulletins on this model OR a PDF file someone could send
> us for this newer set?
>
>
> Jeff Stielau
> Shoreline Electronics Repair
> 125 Beech Tree Lane
> Westbrook, CT 06498
> 860-399-1861
> 860-664-3535 (fax)
> jstielau@xxxxxxxx
>
>
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--
Larry Eastman
American TV & Electronics
Crystal River, Fl.
http://www.tvjunkyard.com
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