Question about Pioneer SD-P4691K 50" Rear Projection Television

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Convergence Ihave a pioneer sd-p4681-k i put a stk-4279 mod it came with a 4279 will it work? also i can tap on the power side and the screen lines up ive checked for bab connections and didnt see any.

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  • Anonymous Sep 10, 2008

    There is a double Image overlay with poor picture quality.



    Any adjustments I can make. Do not find any such dials to use for this purpose.



    mcphoward@shaw.ca

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I have pioneer sd-p4681 it has been a good tv, we just upgraded but i would still like to use this tv
in another room but the volume goes up/down when you turn it on....then about 15min. it goes away for awhile sometimes all day but there are days, it's up and down all day???

can someone tell me what causes this?

i was also looking for a service manual but have been unable to locate one....on the net

Posted on Nov 09, 2008

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Bad convergence out put

Posted on Oct 22, 2006

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1 Answer

It has color at the bottom of the screen almost halfway up. I need to know how much to fix.


Tv have colors lines R,G,B mis alignments,have colors shadows or 3D pictures?Yes?Mean ur tv have a dead convergence board to causes this problems known as a tv convergence picture problems.The tv convergence board must have to be fixed like replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence picture problems.The tvs shops will cost u like $300-350 for parts and labors.

Aug 06, 2011 | Pioneer SD-P50A5-K 50" Rear Projection...

1 Answer

Blue shadows and a yellow and blue arc acroos the bottom of the screen


Tv have a problems known as a convergence problems it dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board it is dead.The tv convergence board must require replacing 2 STK convergence ICS and some or all of it resistors too.To fix the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Mar 02, 2011 | Pioneer SD-582HD5 58" Rear Projection...

1 Answer

The blue lines on the left lower side of the tv will not converge. The tv has never given me a problem. I woke up one morning and powered it on and noticed the blue is misaligned. I tried converging and...


This problems can happen to the DLP tv any times of it tv life.Tv is 100% have a convergence problems.The 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Dec 03, 2010 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

The color is out on my tv


U mean all ur colors picture lines on the tv are misaligns?Ur tv convergence are dead.This problems are the 2 STK convergence ICS and some or all it resistors are dead.The convergence board the 2 STK Convergence ICS and those resistors must be change to solved the convergence problems.The shop will cost u $300-350 for the parts and labors.

May 18, 2010 | Pioneer SD-532HD5 53" Rear Projection...

1 Answer

Tv turns on but the screen is black. Before it went black we were haveing bands of color on the top and bottom and everthing was kind of like in three D they were all three colors and like 3 of them there.


Ur tv have convergence problems,now the 2 STK convergence ICS are completely dead,U lucky u tell it was 3D screen,before it go completely dead,went black screen.Or ur problems it will very hard to diagnose.U now how to do soldering?Must replaced 2 STK convergence ICS,some or all it resistors.Tries Websites Tv repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost u $300-350 for parts and labors.

Apr 03, 2010 | Pioneer SD-P50A5-K 50" Rear Projection...

1 Answer

Pioneer sd-533hd5, STKs changed, getting blue screen but not pict


Did you have double image before changing the stk's ? If not then there was no need to change them.. Pioneers are known for bad solder connections especially in the power supply section.. suggest checking that when you changed the stk's that there are no solder bridges between the pins of either stk ICs

Dec 22, 2008 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

Looking for part/number and location Pioneer SD-P4681


I found this on one site:

Remove the speaker grill then the panel behind that you will find a board mounted to that panel find the big ass Ic ( STK4277 ) and change it,
problem solved almost every time


Hope that helps...

Geno

Mar 06, 2008 | Televison & Video

1 Answer

Vertical lines on screen


this is the convergence gone bad. that is what was blowing the fuse. this is the board on the far left. there are two stk`s on this board. stk392-110.

http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Dec 05, 2007 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

Convergence


convegence amp ic are bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html



Nov 13, 2007 | Pioneer SD-P50A5-K 50" Rear Projection...

2 Answers

Right side convergence


A convergence IC has burned out. If I remember correctly, those Pioneer sets have one huge convergence IC, but that IC only has 5 channels in it so they use another smaller dual STK IC and one half of it is used for the 6th channel and the other half is the vertical output. Look on the convergence board, find the blue convergence jack, identify the blue horizontal channel, follow the traces and replace the IC handling the blue horizontal channel.

Aug 28, 2007 | Pioneer SD-P50A5-K 50" Rear Projection...

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