[TechAssist] Re: Fw: Sony KV-27EXR15
- From: "Tel-Tek Electronics" <teltek2@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 26 Mar 2002 15:16:24 -0500
Thanks Gary;
I sent the group the fix for this. It was definitely bad picture tube. I
rejuvenated it, and seems to be OK. Still running at this time. Just found
it strange for it to blink in 1 second intervals.
Thanks again for the info.
-Ed-
Tel-Tek Electronics
Midland, Ontario. Canada.
teltek2@xxxxxxxxxxxx
Secondary........
teltek35@xxxxxxxxxxx
Tel-Tek Electronics.
----- Original Message -----
From: "Gary McCartney" <number63@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, March 26, 2002 2:12 PM
Subject: [TechAssist] Re: Fw: Sony KV-27EXR15
>
> Ed, here is what I found in the Repairworld forums:
>
>
>
>
> ==============================================================
>
> Subject:
> Re: Sony Kv27EXR15 Video Problem
> Date:
> 20 Jul 2000 09:34:37 -0400
> From:
> <WeRepairNow@xxxxxx>
> Newsgroups:
> techsweb.tv
>
>
>
> Check for coldsolder connection at the delay line
> Denzil
>
>
>
>
> "Mikey" <tvfixer@xxxxxxx> wrote:
> >
> >Picture will try to come in blinking in/out after 1-2min found that if I
> use
> >heat gun on crt board set will lock picture in for 5-10min but goes back
> >to blinking replaced all electrolytics on crt board even though they
checked
> >good. Changed Q710 still no help. Any ideas have no manuel.Thanks Mikey
>
>
>
> ===============================================================
>
> Your set is going into IK shutdown, a feature to dirve us techs and
> customers
> nuts!! Actually the IK is kicking in cause the tube is going south. You
> can
> verify this by probing the jungle chip IK pin, thinkn its pin 32. Might
> run
> the tube thru a tester
> see what kind of emissions it has. :)
>
> Happy hunting!!
>
> MC
>
> PS< oh, and its VARISTOR!!! :)
>
> ================================================================
>
> Try raising the screen voltage, if the picture locks in, even if
> it's washed out, good chance it's your CRT, raising the screen makes it
> draw
> more current, IT DROVE ME NUTS TOO THE FIRST TIME! In most cases ,
> rejuvination
> helped! Regards, Garbis.
>
> ================================================================
>
>
>
> "Shawn Slyfield" <slyfox007@xxxxxxx> wrote:
> >
> >picture is great but it flashes on and off ever second continually.Can
some
> >body throw me a bone here?
> Try and resolder tuner and i.f. block and also there has been quite a
> bit
> of talk on this forum relating to pix tube causing this and can be cured
> by cleaning and rejuvination.Might wanna try a power search and see what
> you can come up with....Frank
>
> ==================================================================
>
> Probably tunner and AGC module connections. If was pix tube, the IK
> current
> sense would blank out the pix completely or flash it and even then the
> pix
> would be very washed out.
>
> =================================================================
>
> "Malcolm" <m.jackson@xxxxxxxxxxxxxxx> wrote:
> >
> >wHEN FIRST COMES ON,No picture, HV ok, Sound ok, No raster
> >then, takes about a min and picture flashs on, pulsing at
> >first, Vertical height low for about 1 min or more, then
> >works good.
>
> some of these ets don't come up until crt emission is balanced.
> possible rejuvanation can repair, but the vertical may also
> have a prob. that could create your symptoms.
> also.....
> solder connections on a22 board and replace Q711 & r702
> good luck......tekmastr
>
> ===============================================================
>
> I think tekmastr is correct, I recently had set with like symptoms.
> Problem
> was 'a little leaky' Q711. I'm posting this 'cause with my meter it
> checked
> OK but wasn't. If not Q711 probably in IK feedback to jungle chip
> somewhere...Duane
>
> =============================================================
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> 7134 Fife Rd, RR 7
> Guelph Ontario Canada N1H 6J4
> Fax: (519)821-1530
> email: number63@xxxxxxxxxxxxx
>
>
>
>
>
>
>
>
>
> Tel-Tek Electronics wrote:
> >
> > This is a re-post. Does anyone have anything on the message below.
> > Thanks;
> >
> > -Ed-
> > Tel-Tek Electronics
> > Midland, Ontario. Canada.
> >
> > teltek2@xxxxxxxxxxxx
> >
> > Secondary........
> > teltek35@xxxxxxxxxxx
> >
> > Tel-Tek Electronics.
> >
> > ----- Original Message -----
> > From: "Tel-Tek Electronics" <teltek2@xxxxxxxxxxxx>
> > To: "AAAA TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
> > Sent: Saturday, March 23, 2002 11:48 AM
> > Subject: Sony KV-27EXR15
> >
> > > This set has Video flashing about per second. Have changed Q711 on the
CRT
> > > board, have redone numerous solder connections on same board, with no
> > > results.Have changed the 1 meg resistor feeding the Screen control,
still
> > no
> > > go.
> > > Has anyone run across other problems that will cause this 1 second
video
> > > flashing.
> > >
> > > Thanks;
> > >
> > > -Ed-
> > > Sorry about the last few HTML posts, have changed it to text, AGAIN.
> > > Tel-Tek Electronics
> > > Midland, Ontario. Canada.
> > >
> > > teltek2@xxxxxxxxxxxx
> > >
> > > Secondary........
> > > teltek35@xxxxxxxxxxx
> > >
> > > Tel-Tek Electronics.
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