Question about Pioneer SD-643HD5 64" Rear Projection Television

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PIoneer SD-643HD5 My Pioneer DLP HDTV is not focusing the picture accurately. The problem in on the bottom half of the screen all the way across. The colors are not lining up correctly, creating a arc horizontally across the screen. The arcs are red and green. Is this problem easily serviced? Can a DIY handle this or do I need a service tech to come out? Any estimate on parts and service costs? Is the problem on a circuit board, etc? Thanks in advance for any help.

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Re: PIoneer SD-643HD5

Yes ,you need to replace both STK392-110s,or 120s,i always upgrade to STK392-180s.These are your convergence ics and you do need a service techician in order to fix this". after replacing both ics you have to realine complete convergence your looking at anywhere from 285.00 -350.00 depends on lady on here was told cost of repair on her set was 700.00 she has same problem.thats where she lives different prices from state to state.

Posted on Jan 27, 2008

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What size mirror pioneer sd-643hd5

All the mirrors are of special construction: a normal mirror will not function or produce a good picture.

Consider looking online (GOOGLE) for one of the several vendors who sell replacement mirrors by brand/model number or contact Pioneer to see if mirror available.

There are also people parting these sets out on Ebay from time to time.

Good luck and if you have questions let me know.


Feb 29, 2012 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

Tell me how to clean my bulbs and mirror of my pioneer SD-643HD5

You will have to remove the Front Screen ,First remove the bottom Panel and then the screen.

Jun 29, 2011 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

I have a 64 inch hdtv pioneer projection monitor sd-643hd5 and it won't fit into my basement. What can I do? Thank You In Advance, Bruce Morash

Ha Ha, I had the exact problem. I think mine is the same model of TV as well, I have a 64" Pioneer made in 2003. So my TV would hit the slanted ceiling above my stairs as I tried to move it down. I first took off the wheels of the TV and this helped but it was not quite enough. So since the bottom of the TV is flat with exception of the side boards and the front trim. I removed the front trim temporarily and cut off the side boards with a circular saw till even with the flat bottom. This gave me 2.5" more clearance which was enough to fit the TV downstairs. Hint if you scribe the cut line with a utility knife it will reduce chipping.

Mar 28, 2011 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

Top half of picture is good but the bottom half has green and red shadows

needs new convergence chips, has 2, stk392-110, they need to be soldered in. probably need a tv repairman.

Sep 19, 2009 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

Convergence board cracked?

Once the board is cracked it is no longer repairable (even if it's a tiny crack that may not appear to interrupt any connections), and you would have to replace the complete board. Any attempt to repair or continue using a cracked board may cause more damage to the entire unit. You can find a replacement digital convergence board for a model # SD-643HD5 from this major Pioneer parts distributor at the following link:

Pioneer SD-643HD5 Replacement Part Digital Convergence Board

Feb 02, 2009 | Pioneer SD-643HD5 64" Rear Projection...

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.

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

1 Answer

Picture is green and stays green

check the convergence area for bad solder connection
Sony Convergence

Aug 19, 2007 | Pioneer SD-643HD5 64" Rear Projection...

1 Answer

Pioneer SD-643HD5 64 in. Rear Projection

You need to replace convergence chips - they are behind the large black heatsink

May 22, 2007 | Pioneer SD-643HD5 64" Rear Projection...

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