[TechAssist] Re: Sony KV27TS27- ANSWER
- From: jose luis contreras <cancuntvservicio@xxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 6 Feb 2002 23:39:26 -0600 (CST)
---
Hello: I saw a couple times, same problem
KV27ts27. And I spent about a week
to find out the problem,.
Solder a piece of wire to the 9
volts, in the trc plate, attach -
your voltmeter, and when you have
the problem, you will notice, voltage
going down, thats way, you see a
picture going black.
Take me advice, solder a piece
of wire direct from the 9v main board
direct to the crt plate.
Good Luck J.L.
Damon <DAMON101@xxxxxxxxxxxxxx> escribió: >
> No, it isn't a power problem, it's a video problem.
>
> Damon Brunger
> damon101@xxxxxxxxxxxxxx
> Telrad Electronic Services
> Ft Wayne, IN 46815
> ----- Original Message -----
> From: "Eric Manuel" <tvman@xxxxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Wednesday, February 06, 2002 7:46 AM
> Subject: [TechAssist] Re: Sony KV27TS27-Intermittant
> No Video
>
>
> >
> > Hi Damon try replacing IC601 may be you
> trouble..Eric
> >
> > Damon wrote:
> > >
> > > Hello everyone,
> > >
> > > We' ve had a KV27TS27 unit into our shop several
> times with an
> intermittant problem described by the customer as
> "black fingers starting on
> the right side of the screen and progressing to the
> left side".
> > > I finally saw what he was describing, so here
> are the symptoms: TV runs,
> sound is ok & not affected. The video does start to
> go black on the right
> side of the screen (it actually looks like the video
> breaks down or goes
> black). The picture that is viewable is properly
> synced, has good color/luma
> and although I'm not sure I think the OSD is always
> ok when this occurs.
> > > I may have seen this problem before, as I
> believe that the video jungle
> or some cap connected to the jungle is responsible
> for the video dropping
> down to black.
> > >
> > > If you were to look at the symptoms using a
> scope set to the horiz rate,
> I would say the video would start to drop down to
> the black level starting
> on the trailing edge of the line and progressing to
> the leading edge of the
> video signal (starts on the right and progresses to
> the left).
> > > I wish I was able to test this failure on the
> Video 1 and Tuner
> settings, unfortunately I could not verify if it
> occured on Video 1, only
> tuner. When it started to return the video would
> progress from the left side
> in "snow like dots" back to the right side
> slowly.....then BOINK! all the
> picture would pop back in. Sorry about the
> long-winded infomercial, but this
> has been REAL intermittant!!!
> > >
> > > Has anybody seen this symptom? Is it possible
> that the Video Jungle has
> had this as a symptom?
> > > Has anybody possibly experienced a sync or
> blanking signal failure
> affecting the video jungle, yet providing good sync
> out to the crt?? Already
> looked at both Sony and Tech Assist Tech Tips: C570
> for a TS11, D518/R587
> for a TS20, and Q301 or IC301 (add D308) for the
> TS27 models.
> > >
> > > Your experience and opinions regarding this is
> VERY Much APPRECIATED!
> > > Thanks!
> > >
> > > Damon Brunger
> > > damon101@xxxxxxxxxxxxxx
> > > Telrad Electronic Services
> > > Ft Wayne, IN 46815
> > >
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