[TechAssist] Re: One more try Samsung PCH521R May need schematic. Convergence problem.
- From: "Damon" <DamonEB@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 14 Dec 2005 22:05:11 -0500
Are you saying in #3 that the er, uh ....Mute (1) (#) (*) will not bring up
the conv grid anymore? Don't want the code available to the public, so you
know what I mean, right?
If the grid don't come up, it is possible that the DCU got a hit of HV...but
I think I'd verify b+ to the conv ic, and since the conv board is separate,
you can check the incoming Conv signal is present on the connector at the
Conv output board.....that is a + on this unit.
I don't know if I can ship schematics, but if you need them, I'll give it a
shot...the schematics can be 10 to 20 meg, and my mailbox seems to cut a 20
meg short by 1 or 2 meg...won't ship it if it's over that amount.
So we'd have to find a place to transfer that PDF file....as a whole....
The good thing is Samsung breaks down their manuals into 5 meg sections, or
less.....I'd have to mail a piece at a time and send the next one after you
recieved the first one possibly
I might try to send directly to you after I finish this.....
Damon B
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: "GERALD GANN" <alpha21century1234@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, December 14, 2005 10:53 AM
Subject: [TechAssist] Re: One more try Samsung PCH521R May need schematic.
Convergence problem.
> Thanks Damon for the input. Life is great, a lot better than the
>
> alternatives.
>
> 1. All inputs did adjusted fine and saved. I had turned the
>
> TV off and back to make sure.
>
> 2. TV doesn't have Flash focus.
>
> 3. I can't even get the customers convergence to move, same
>
> as before I started working on it. Also can't get into
>
> convergence setup grids same as before. Thanks again.
>
> Jerry
>
>
> Damon <DamonEB@xxxxxxxxxxx> wrote: Well Damn Jerry....your life sucks!
Doesn't it.....
> Anyways, there's several things to consider. [1] Did Samsung make the
> convergence adjustable for EACH input??
> (Been there, done that).
> [2] Did you SAVE and FORGET to Flash focus (if it has it)? You'll lose
your
> new settings everytime on Samsung/Sony/Hitachi.....
> 3] and most important...can you still ADJUST the convergence grids? If so,
> you probably wiped the Eeprom's contents.
> On 1 2 and 3 you need to adjust the convergence, if it doesn't move at
all,
> well....I'm sure you've checked that already. Do you need an Eeprom
> replace?? I really don't think so, you'll know it if you SAVE one or 2
> points, turn off the TV, back on, and those points have gone back to their
> first setting....
>
> Damon B
> Telrad Electronics
> Fort Wayne IN
> ----- Original Message -----
> From: "GERALD GANN"
> To:
> Sent: Tuesday, December 13, 2005 3:58 PM
> Subject: [TechAssist] Re: One more try Samsung PCH521R May need schematic.
> Convergence problem.
>
>
> > PCH521R is definitely different than the PCJ522R. The convergence and
> the audio board are together and stand up on the left side looking from
the
> back. I can download the PCH521R from ServiceManuals.net but I thought I
> would check one more time on the list before I spend the $24.00.
> > OK Here's the lowdown. After changing all there STK's and the 3A
> fuse in the P/S as stated in T/A tip. I set up the convergence to
perfection
> and saved. After doing that I noticed I only had audio coming from one
> speaker. Being convergence and audio are on the same board I reached
inside
> from the front to flex the board, I only assume I did this so I could hear
> if the other speaker came on. Anyway whammm it got me. That hurts. I don't
> know where the high voltage came from but it burned a pin hole in my
middle
> finger and a small mark on my pointer finger when I touched the audio IC
> heat sink. You can call me dummy I know I should have used a wooden stick.
I
> could be wrong but my guess would be it has happened to all of us at some
> time or another.
> > Anyway after that I pulled the convergence/audio board and
> resoldered the audio circuit audio came back on both sides but convergence
> was back to the way it was before I started. Question could the high
voltage
> zap have taken out the 3 STK's or do need to go to the power supply? I
> checked all the fuses on the power supply board and they are good. I do
need
> the schematic for the PCH521R
> > Sorry for the long post but I thought it necessary to tell all to
> get a good response. Thanks.
> > Jerry
> > Alpha 21 Electronics
> > Granite City, IL 62040
> > 618-452-8620
> > alpha21century1234@xxxxxxxxxxxxx
> >
> > GERALD GANN wrote: Thanks Bill that's
> why I ask I have the PCJ522R.
> >
> > The convergences board is definitely different. As long as the
> >
> > procedure or the same I can go from there. I did a PCJ522R
> >
> > awhile back and had to order a special remote to save changes.
> >
> > Thanks again.
> >
> > Jerry
> > Alpha 21 Electronics
> > Granite City, IL 62040
> > 618-452-8620
> > alpha21century1234@xxxxxxxxxxxxx
> >
> >
> > Premium Technologies
> > wrote: Gerald,
> > Almost identical, both are the same chassis, and the PCJ522R is on file
in
> the members
> > area... If you have any problems getting it I have it and I'd be glad to
> download it or
> > sections of it that you need...
> > Bill
> >
> > William Rayburn, CET
> > Premium Technologies
> > PO Box 442
> > Long Beach, WA. 98631
> > 360-642-4993
> >
> > ----- Original Message -----
> > From: "GERALD GANN"
> > To:
> > Sent: Tuesday, December 06, 2005 12:33 PM
> > Subject: [TechAssist] Re: OK new question. Samsung PCH521R May need
> schematic. Convergence
> > problem.
> >
> >
> > OK new question. Being I got no replay on my first post. Can
> >
> > some tell me if the convergence setup is the same for this modal
> >
> > as it is for the PCJ522R? The schematic would still be great.
> >
> > Thanks.
> >
> > Jerry
> > Alpha 21 Electronics
> > Granite City, IL 62040
> > 618-452-8620
> > alpha21century1234@xxxxxxxxxxxxx
> >
> >
> > GERALD GANN wrote:
> > Samsung PCH521R May need schematic. Convergence problem.
> >
> > Found this tip in T/A
> >
> > Garris TV, Make: Samsung, Model: PCH521R, Chassis
> >
> > APT51B,
> >
> > Problem: Convergence way off and unable to adjust, top/bottom bowed-in.,
> > Cure: Open 3A on P/S Module located on right side of chassis, this fuse
> protects the -26v
> > going to all (3) STK391-020 Convergence IC's which are located on left
> side of chassis on
> > large heat-sink. Replaced 3A fuse on SMPS board and replaced all (3)
> STK391-020 Convergence
> > IC's on the Convergence/Sound board.
> > Comments
> >
> >
> > Before I change all three STK's, looks like a
> >
> > pain in the axx's. Anyone have any quick fixes? No leakage from
> >
> > tubes.
> >
> > Jerry
> > Alpha 21 Electronics
> > Granite City, IL 62040
> > 618-452-8620
> > alpha21century1234@xxxxxxxxxxxxx
> >
> >
> >
> >
> >
>
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