[TechAssist] Re: Sony 32" TV KV32XBR45, severe lines across screen, no video

From: Gary McCartney <gary@xxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx
Date: Sun, 22 Dec 2002 22:15:00 -0500
Hi Bill. 

Been waiting for this chip to arrive. Finally did and it solved the
problem. Thanks for your help.


Gary



Premium Technologies wrote:
> 
> Hi Gary,
> There are also tips from Sony Videotech that describe these same symptoms
> and point to replace IC301, P/N 8-752-063-50.
> The CXA1477AS is available for $49.90 at:
> http://www.electronicsic.com/Default.htm
> Hope this helps.
> Bill
> 
> Premium Technologies
> 27501 V Street
> Ocean Park, WA. 98640
> Phone: (360) 665-5984
> Fax:     (815) 425-8530
> email: premtech@xxxxxxxxxxxxxx
> ----- Original Message -----
> From: "Gary McCartney" <gary@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, November 06, 2002 8:05 AM
> Subject: [TechAssist] Sony 32" TV KV32XBR45, severe lines across screen, no
> video
> 
> >
> > I have here a Sony 32" TV KV32XBR45. The symptoms are:
> >
> > First turn it on, there are thin bright lines which go all the way
> > across the screen, and also cover the whole screen from top to bottom.
> > The spacing between each line is maybe 1/8 of an inch. after about 5
> > seconds, the lines dim out but can still be seen. There is no video
> > signal visible in the background. The background at this point is black.
> > Turning the G2 screen control up causes the lines to go brighter at
> > first but then they dim out to almost as dark as before G2 was adjusted.
> >
> > Scoping the R, G, B inputs to the CRT board shows sync but no video
> > information. Scoping heater waveform shows 23 V p-p from cold to warm
> > without fluctuation in amplitude. Measuring R, G, B pins on CRT I get
> > approx 185V dc on each. G1 measures zero V dc
> >
> > I have never worked on any of these XBR sets, but through reading tips,
> > I believe it could be one of 3 problems:
> >
> > -IK
> >
> > -caps bad in PIP module
> >
> > -bad jungle IC 301, CXA1477AS
> >
> >
> > I have gone over soldering on main and jungle IC boards, checked caps in
> > power supply and around IC 301 and changed a few marginal ones but there
> > is no difference in operation. I don't know where the PIP module is so I
> > haven't checked for caps there. There has to be a PIP module because it
> > is a dual tuner set. I also don't have schematic to make measurements
> > around the jungle IC or extension cables to make life easier to work at
> > it. I don't know much about the IK or how to check it out. Most of the
> > tips I read suggest the IC 301 jungle sounds like the probable suspect.
> > My supplier has it on back-order until December.
> >
> >
> > Any suggestions appreciated.
> >
> >
> >
> > --
> > ******* ATTENTION, PLEASE ********
> >
> > I have a new email address. Please
> > send all email in the future to:
> >
> > "Gary McCartney" <gary@xxxxxxxxxxx>
> >
> > Thanks.
> >
> > Gary McCartney
> >
> > McCartney Electronics
> > 7134 Fife Rd, RR 7
> > Guelph Ontario Canada N1H 6J4
> > Fax: (519)821-1530
> >
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-- 




Gary McCartney

McCartney Electronics
7134 Fife Rd, RR 7
Guelph Ontario Canada N1H 6J4
Fax: (519)821-1530
email: gary (at) number63.ca

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[TechAssist] Re: Sony 32" TV KV32XBR45, severe lines across screen, no video

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