I have a 65inch mitsubisihi and having convergence problems need help on instructions to put in stk-392-570 chips to fix the problem. WS-65819

yes......you can rplace the convergence ic's on convergence module......these are the big stk type ic's and also the low ohm resistors.
These are 3.9 to 6.8 ohm half watt on the yoke return circuit. Let me know how you fare......regards. meder's tv

The two stk-392=570 chips need to both be replaced===they are along with the rest of the circuit on the middle board.

Your Convergence ICs are likely failing or it is a bad solder joint related to that area. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless. There may only be one STK chip in this set. If there are two, they will be right next to each other.

Yes the ICs and Pico fuses need to be replaced. You can get the convergence repair kit for your model from www.tvrepairworld.com which has the ICs and fuses plus the CD with repair instructions.

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



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




Red convergence skewed and off.




Convergence skewed---also a bad ic chip!


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

If it looks 3d with colors skewed you have a bad convergence IC.

The model indicated uses 2 of the STK-392-570 chips; they are located on the middle circuit board and a pair can be purchased on EBAY for about 14 dollars plus shipping.

I have repaired hundreds of these sets with this problem and I have composed and have available step by step, start to finish instructions for the do it yourself person who wants to repair this problem.

If you want the instructions (they tell you everything you will need and exactly how to do it) let me know here by using the "add a comment" button.

Please reply and understand total parts cost for this repair should be under 35 dollars total and the repair takes about one hour.


Regards, SD TECH

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

need to replace the stk's and some other caps, usually have to resolder the chasis on both convergence and power supply chassis.

This is the begining of a convergence problem and the O/p IC' will probably need replacing.
Try adjusting the convergence. If it won't move see below- (or hitting Magic Focus for some Hitachi’s)

Convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

the convergance amplifiers are STK392-570 there are two of them they both must be replaced they are located on the power board. they are on the lagest heat sink on that board. yes, they need to be soldered to the board. they look like this:
there also may be some resistors and fuses that failed. if you are not a tech do not attempt this repair if you do you may end up with further issues or dammage to you or the set.