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I want the step-by-step instructions that SD Tech stated he has available for replacing the "STK-393-110" convergence IC Chip.

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You must have a toshiba tv. easy. with the back off, you will see 2 convergence ic's mounted on big silver heat sinks. and they will say on them stk-393-110. replace both of them. unplug tv of course. unplug all plugs on that convergence board. unscrew the two screws that hold it. slide it out. and then replace them on a work bench by unsoldering the stk's, unscrewing them from the heat sinks. replace, solder in the new one's, screw in the heat sinks back, slide the board back, plug in all the plugs back, then enjoy

Posted on Nov 14, 2009

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I have START TO FINISH, STEP BY STEP INSTRUCTIONS FOR REPLACING THE STK-393-110 CHIP IN SETS THAT USE IT--available here for free if you need them. please let me have the info for my mitsubi. ws-7390


They are available but meant for the models that have that part on the middle board. There are a few models where chip is on a side board--instructions would still apply but you would have to do some things differently.

SD TECH

Jun 11, 2012 | Mitsubishi WS-73909 73" Rear Projection...

1 Answer

Will bad convergance ic's keep my Mitsubishi


If one of the two stk-392-570 chips has shorted it will blow a pico fuse on middle board and set will not come on.

Plug set in, turn on, when green power light goes out on the front of the set press and hold both the menu and input (device) buttons for at least five seconds and release both.

Power light will blink a two digit error code: if 2,2 it is a blown pico fuse and the chips also must be replaced. I have start to finish step by step instructions that are available if the customer selects me to answer in the new Marketplace here on Fixya.

see attached photo of chip and also part of middle board with the green pico fuses.


10_4_2011_6_08_57_pm.jpg


10_4_2011_6_09_50_pm.jpg


10_4_2011_6_10_21_pm.jpgchips look like this but will have 570 number on them.

SD TECH

Oct 04, 2011 | Mitsubishi Televison & Video

1 Answer

Hi . My name is Paul. ws65 909 is about 12 yrs old. Have a yellow swoop front top right to top left, and there is double image on screen. Any ideas how to fix? Thx


Go into customer menu and select convergence, then advanced--if as I suspect it is skewed and will not adjust it is the convergence IC this set uses.

This model is one that uses just one chip for this---STK-393-110 and part is under 15 dollars on EBAY.

Good news: I have start to finish, step by step instructions for the do it yourself person for this repair in this set.

If you want the instructions we can find a way to get them to you, they tell you everything you will need and exactly how to do the repair.

If this information helped, rate this solution as very helpful as I do this for free.

SD TECH


258ae96.jpgIC Chip used in model you indicate you have.

Sep 05, 2010 | Mitsubishi WS-65909 65" Rear Projection...

1 Answer

Picture is distorted blurry


Model number indicated is prone to convergence problems; red or blue shadows around writing or letters---

The model indicated uses two of the STK-392-570 convergence chips; they are located on a large metal heat sink with fins at the front of the middle board inside the set.

The board has to be removed to replace them.

A pair of the chips can be purchased on EBAY (where I buy mine) for about 15 dollars-----total parts cost to fix set should be under 25 dollars.

I also have repaired hundreds of these sets and have:

Start to finish, step by step instructions for this repair in this set; they tell you everything you will need and exactly how to do the repair.

I can if you request post the instructions here for you for FREE.

I will attach a photo or two of typical convergence problems so you know if it is your problem and a photo of a typical convergence chip.

If all this information helps you, rate this solution as very helpful here as I do this for free.

SD TECH



ee35869.jpgTypical convergence chip---yours will have stk-392-570 on the front of them.



bed570d.jpg
Red convergence skewed and off.



acffdfa.jpg
Convergence skewed---also a bad ic chip!


Let me know if I can assist you in any way.




Aug 13, 2010 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

We have a WS 65511 with an error code 2,2. What does it mean and how can we fix it?


I am a expert on these sets and have fixed hundreds of them.

2,2 is short protection and 97% chance one or both of the pico fuses that protect the convergence circuit are blown (bad).

Model indicated uses a single STK-393-110 convergence IC. The fuses and chip are on the middle circuit board which needs to be removed to repair the set. Total parts cost will be under 25 dollars---I use a seller on EBAY who has the chip and the fuses.

I have start to finish step by step instructions for this repair in this model as I have done it hundreds of times.

Soldering and some skill are involved in getting the board out and replacing the parts.

let me know if I can assist you or if you have questions let me know here.

If you decide to repost this question mark it "attention SD TECH"


SD TECH

Aug 05, 2010 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

My blue will not adjust up and down. It will adjust sideways. I try to converge my tv, the red is working properly but the blue will not adjust vertically. It will only adjust horizontal.


The model indicated uses a single STK-393-110 CONVERGENCE OUTPUT IC. The chip is most likely the problem(98%) and I know as I have changed hundreds of them.

The part is about 14 dollars from a seller I use on EBAY.

I also have start to finish, step by step instructions for doing this repair in this model.

They tell you everything you will need and how do do the repair.

The repair involves getting the center circuit board out of the set and replacing the IC and examining some blue resistors in front of it to make sure none opened.

Let me know by responding to this post and I can either post the instructions here or email?

SD TECH

Apr 16, 2010 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

The red part of the picture is curved and separated from the other colors.


If you go into the customer menu and select convergence--then advanced(there will be instructions on screen) and red or blue are skewed and will not adjust--you have a convergence circuit problem.

The WS-55511 you have indicated uses a large single IC chip for this---a STK-393-110. SHOPS get 300 or more for this but you can buy all the parts needed for under 30 dollars--one seller I use on Ebay has that chip for 12 dollars.

If you confirm you have a convergence problem and want to try to fix it yourself---I have START TO FINISH, STEP BY STEP INSTRUCTIONS FOR THIS REPAIR IN THIS MODEL.

They tell you everything you will need and how to do it.

If this information helped you rate this solution as I do this here for free. If you want the instructions I can post them here.

SD TECH



c97bc0d.jpg

Dec 20, 2009 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

The colors are blurry and will not converge


This model uses a Single convergence IC---a STK-393-110.

If convergence is skewed and will not adjust the chip needs to be replaced.

Most shops get 300 or more for this repair---you can buy the IC on Ebay for about 12 dollars--total parts cost should be under 30 dollars.

I have Start to finish, step by step instructions for this repair in this set--they tell you everything you will need and how to do the repair.

Let me know if you have questions or want the instructions.

If this helped you rate this solution as I do this here for free.

SD TECH

3eff782.jpg

Dec 19, 2009 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

Appears convergence is not working. when i use the video button to see the convergence lines at the top and bottom of the screen the lines are curved which is causing the color and letters to be off on the...


WS-65511?

This model uses a single convergence IC chip----
STK-393-110.

The chip needs to be replaced and there are about a dozen light blue resistors in front of it that need to be checked also.

Considering you can buy the part on Ebay for about 12 dollars plus shipping---if you or someone you know can do it for you, you can save the set and a lot of money.

I have done hundreds of these repairs and I have had so many people here asking that I composed step by step-----start to finish instructions for this repair in this set----

The instructions tell you everything you will need to do the repair and are detailed.

I just today received a comment from someone who got the instructions tell me the repair went perfect and he now has a working TV again for a fraction of what a shop wanted to repair it.

If you want the instructions let me know, I am not allowed here to post MY email address, but you.....

If you have any questions or need advice let me know.

I am here to help people, I do this here for free.

SD TECH

Oct 28, 2009 | Mitsubishi WS-65511 65" Rear Projection...

1 Answer

Yellow and blue appearance in upper left corner - ghostly background of screen.


ok, it is a ws-55-511? if blue or red will not adjust in some direction you have a bad CONVERGENCE IC--I have start to finish step by step instructions for the repair of this set with this problem.


If you want the instructions provide me a email address and give me a vote here--I am not allowed to post my email address here--It depends on if you can do this repair yourself--this model uses one STK-393-110 CONVERGENCE CHIP--I can tell you where to buy it and how to replace it--


if you have questions or need more help respond to this posting here.

Regards, SD TECH

Sep 18, 2009 | Mitsubishi WS-55511 55" Rear Projection...

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