Question about Mitsubishi WS-55809 55" Rear Projection Television

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Mitsubishi WS-55809 installing STK392-570

I have a Mitsubishi WS-55809 and I have convergence issues. I found the part I need is an IC chip STK392-570 but I don't know how to install it. I have zero experience with doing this but I am a pretty technical guy so a quick how-to would be awesome. I don't have to money to pay somebody to replace it and I am getting headaches from watching the tv. Please help!!

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  • cbolitho Dec 10, 2008

    Ok, I have soldered a few things before and it doesn't really seem all that difficult. To unsolder I need a solder braid to head up the old solder and so it attaches itself to the copper of the braid, remove the IC's and replace with new ones and re-solder back on. You mentioned to check the low ohm resisters in same circuit, how would I go about doing that? I don't have a voltometer or anything like that.

  • executivebui Jan 10, 2009

    Hello, I have Mitsubishi WS-55809 installing STK392-570 problem. I can do the solder no problem. However when removing the circut board, how do I know when it is safe ( no electricity in capacitors or transformers) to proceed.? I do not have a degauss tool. I have a cheap multimeter, but where do I test? Or how long after unplug would be absolutely safe? Thanks

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  • Mitsubishi Master
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Un solder ics replace both of them resolder make sure you do not solder any of the circuits together or it will short something out,also ck low ohm resistors in same circuit.I will try to help you the best that i can. Main key you must know how to Solder.

Posted on Dec 10, 2008

  • ladywinn
    ladywinn Dec 10, 2008

    you will need to get some heat sink silicon to put onto back of new ics, also just look to see if any of the resistors seem burted. volt/ohm meter do you know anyone that has one/or you can buy one for less then 25.00 they really do come in need for alot of things .resistor values 1.8 ohms 1watt look up color code for resistor values print it .Radio shack use to have a free resistor chart at thier store.If i can be of anymore help just let me know.

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1 Answer

Mitsubishi WS-55809


Most shops will have that chip which is not used in many mitsubishi models----try suburban electronics on the internet----they have all the chips etc and you are looking at 2-3 days for average delivery to California----I know.

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Ws 55809 color


So you are still haveing the convergence issue with your tv, the convergence ic chips need to be replaced to correct this problem you can't adjust it as the components are failing.

Aug 19, 2008 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Just changed the convergence chips and now the TV turns right back off


There is a short. Be sure none of the leads on the ic are shorted together.

Jan 01, 2010 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

I need to replace the convergence chips in my Mitsubishi WS-55809. Could someone send me the instructions to do so, as well as any other need info for this task? Thanks, Jason utilitypigeons@aol.com


There should be a diagram somewehre in the tv set itself. If not, do a diagram search on your model number on your television, and it should show where those chips are.

Nov 23, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

I have a Mitsubishi ws 55909 and all of a sudden the convergence will not line up. The red lines have a wave pattern that will not reset. Any ideas?


You will need to replace the convergence amplifer chips and any related blown resistors, and perhaps two fuses.
Search this site for convergence fixes.

Sep 08, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

My mitsubishi ws-55809 will not turn on


hi..
The problem is the Convergence circuit and the reason it does not power up is that one or two of the 5a pico fuses have opened when the Convergence IC failed. It is either going to be a pair of STK392-570's or a single IC STK393-110. That is as long as this set is a Mitsubishi made in the last 7 to 9 years.
I would estimate the cost to repair 280.00 plus service call fee if any, plus tax on parts.
Let the Tech check it out. If if it cost less than 400.00 to repair, it may well be worth taking the chance.

thank u
rate me

Jul 21, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

55809 convergence


REPLACE THE CONVERGENCE I.C.'S AND CHECK THE RESISTORS/FUSES AROUND THE STK'S

Mar 16, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Convergence problems


If you know how to solider you can fix this yourself with no new parts.

The convergence chip is becoming desoldered from the board. If you check hometheaterspot.com's Mits forum they have very detailed info on how to fix this.

Dec 16, 2007 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Convergence problem, then no power...


Hi! Truman001;
Check all the peco fuses on the deflection /power pcb.
Please let me know what you find.

Thanks!!

Toprol

Oct 15, 2007 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Mitsubishi WS55809 "red" converge problem


Proper description is convergence IC ...part # STK392-570...
there are two in model # WS 55809...replace both.......T.

Jul 30, 2007 | Mitsubishi WS-55809 55" Rear Projection...

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