[TechAssist] Re: Sony KV27XBR45 Ch# SCC-H81A-A **Pincushion, pulsing"

  • From: "Phillip R. Hull" <phil245@xxxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Thu, 11 Sep 2003 09:35:18 -0400

On other Sony chassis I have found the problem is usually a open foil
suppyling  the E/W signal to the circuit.  Im not sure about your model
number though.
Phillip R Hull     STET
phil245@xxxxxxxxxxxxx
FAX 517--569-3075
Professional Technicians only
----- Original Message ----- 
From: "Shoreline Electronics" <jstielau@xxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, September 10, 2003 9:25 PM
Subject: [TechAssist] Re: Sony KV27XBR45 Ch# SCC-H81A-A **Pincushion,
pulsing"


> This unit uses the CXA1477AS jungle IC.....never seen it cause PC
> issues....but there may be a first!
>
> ==========================
> Jeff Stielau
> Shoreline Electronics Repair
> 344 East Main Street
> Clinton,CT 06413
> 860-399-1861
> 860-664-3535 (fax)
> jstielau@xxxxxxxx
> ==========================
> "If you push something hard enough it will fall over."
> Fudd's First Law of Opposition - Sir Sidney Fudd
>
>
> ----- Original Message ----- 
> From: "Valley TV" <valleytv@xxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, September 10, 2003 9:12 PM
> Subject: [TechAssist] Sony KV27XBR45 Ch# SCC-H81A-A **Pincushion, pulsing"
>
>
> > Hi everyone!
> > I absolutely had to take a break from this Sony KV27XBR45 before I went
> crazy..  Obvious pincushion problem on both sides but it also seems to be
> pulsing on the sides.  I carried this little monster down 3 flights of
> stairs and into my motel room (on the road again..) and have gotten bleary
> eyed working on it.  I replaced L510 (yes, I actually had 1) Q505, IC504,
> Q503 (pin out) and checked the solder connections on L509. Absolutely no
> luck..
> >
> > I'm starting to think I'm in the Bates Motel tonight!  I have no
schematic
> with me to help trace the circuit but I did notice the voltage on the
> collector of Q503 keeps changing from 3.1v up to 5.9 volts and back  B=.55
> E=0 but I have no idea what is correct.
> >
> > Any suggestions, PLEASE.
> >
> > Gary
> > Valley TV
> > valleytv@xxxxxxx (if anyone has a scan of the circuit)
> > -- 
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