[TechAssist] Re: Sony KV27FS12 - shuts down
- From: "KENNETH BARNES" <KENNYB928@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 17 May 2005 21:02:13 -0500
Damon: Pin cushion problem. Have too much width as stated. Can't adj. horz
size. My schematic shows only -13V, +13V and B+ 134 and 9V and low B+. Can
you, or someone, please tell me what the voltages are on Q503, Q504 and I
C501? Q503 and Q504 check ok. Thanks. Kenny
----- Original Message -----
From: Damon<mailto:damon101@xxxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>
Sent: Wednesday, May 11, 2005 7:46 AM
Subject: [TechAssist] Re: Sony KV27FS12 - shuts down
Did you ATTEMPT to adjust the HSIZ, but got no response? Or was the writing
so far off you chose not to adjust it? If there was no adjustability when
you ATTEMPTED.....I'd take a serious look at the Pin circuit again. I don't
have schematics in front of me on this one, but most PIN and HORIZ SIZE
problems are related to the ground side of the "Yoke-to-Ground" path.....of
course I think I've seen recently the H Size/Pin signals being injected into
the H Drive transformer for waveform correction......don't know if this
applies to this chassis or not.
Do you have schematics with you?? Or are we both remembering this circuit
from "days ago"?
BTW I'm Going Into Surgery on my most favorite hand TODAY.....my left hand,
which means my responses to anything will be SLOW afterwards....ever try to
use the LEFT side of the keyboard with your right hand? If you have cats
like I do, you would have....
I just can't wait to try wiping my ass right handed.........8-0
Damon Brunger
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: "KENNETH BARNES" <KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx>>
To: <techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>>
Sent: Tuesday, May 10, 2005 9:56 PM
Subject: [TechAssist] Re: Sony KV27FS12 - shuts down
> Damon: I replaced IC301 - have pix and all functions. Now I have way
too much width. Called up service adjustment mode. Secured HSIZ (Horz
size); cannot adj. Can't see all the service writing. Missing the s on
service writing. Checked Q503 & Q504 in the pincushion circuit. They are
O.K. Also picture bowed in the middle even though I have a full pix. Any
suggestions? Thanks for your input. Kenny
>
> ----- Original Message -----
> From:
Damon<mailto:damon101@xxxxxxxxxxxxxx<mailto:damon101@xxxxxxxxxxxxxx>>
> To:
techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>>
> Sent: Monday, May 09, 2005 7:17 AM
> Subject: [TechAssist] Re: Sony KV27FS12 - shuts down
>
>
> You missed the vertical circuit completely. Most of the time the
vertical
> drive signal dies and you have to replace the jungle, other times it's
the
> V+ and V- supplies that come from the IHVT.
>
> Damon Brunger
> Telrad Electronics
> Fort Wayne IN
> ----- Original Message -----
> From: "KENNETH BARNES"
<KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx>>>
> To: "techassist"
<techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>>>
> Sent: Sunday, May 08, 2005 10:11 PM
> Subject: [TechAssist] Re: Sony KV27FS12 - shuts down
>
>
> > Sony KV27FS12 - still have a problem. 4 blinks. Set came into shop
dead.
> Replaced HOT. It then blew two HOT. Changed flyback (bad) and
installed
> new flyback, another HOT and changed vert IC502. Hi voltage is normal.
B+
> on HOT is 134V. All voltages on IC502 are normal. When you plug TV
into AC
> it comes on for 6 - 8 seconds then shuts down - cannot turn off TV with
> power button. Once it shuts down, you can make it come on by pushing
power
> button, then it shuts down in 6 to 8 seconds. By turning on enough
times,
> you get a horz line in pix, slightly above center of pix.
> > Also D501 and D504 are ok. D620 & D616 are OK. Ring yoke is ok.
> Changed IC702. 200V source is normal.
> > What have I missed? Appreciate any help with this one.
> > Kenny Barnes TV
> > 928 S. Marshall St.
> > Boone IA 50036
> > Ph. 515 432 5250
> > Email:
KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:K<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx<mailto:K>
ENNYB928@xxxxxxx<mailto:ENNYB928@xxxxxxx>>>
>
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