[TechAssist] Re: One more try Samsung PCH521R May need schematic. Convergence problem.
- From: Al Gutz <alg@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sun, 18 Dec 2005 20:38:04 -0500
Damon
What if its one without flash focus??
Al G
Damon 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" <alpha21century1234@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> 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 <alpha21century1234@xxxxxxxxxxxxx> 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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