I've replaced my STK's, 2 pico fuses on the G boards, and tested each convergence resistor along with the pico fuses on the D board--albeit they were still soldered in place. I desoldered two pico fuses and one resistor to test them in said manner, but they checked out fine. I've gone over every square millimeter around the soldered area of each STK with a microscope checking for areas with missing solder. Even the tiny surface mount resistors are intact. My hopes were really high in getting this TV fixed. I must be missing something--can anyone point out some idears please? Thanks, Kris

most sony models require the 6 pico fuses on the D board and the 2 Picos on the G board will require replacement along with the two ICs. Did you check the pico fuses?

One of two things:
Either:
a) The STK chips you put in are no good (not uncommon)

or

If you weren't careful you may have removed a surface mount resistor accidently while desoldering the orignal STKs. I had a customer do that to me once and figured it out by comparing the board to the schematic for that board location.

it will need a new light board or you will need to turn the brightnees up

Hi.


First try using Autofocus. If there is a convergence problem this won't fix the problem.

Try using the convergence alignment procedure from service manual.

Here the procedure that works on most Hitachi rear projection.

Here the grid with convergence problem




If the procedure does not work, then the two STK392-110 on convergence board must be replaced.

Before replacing the ICs you can test the pico fuses located on convergence boards. Simply read ohms to test if they have continuity.

Better also testing components on convergence board like resistors located at the base of STKs.

After removing the old STK, the new ones must be re-soldered using cooling paste.

Price for single IC can is about $8/$20. I think STK392-110 on this model can be better replaced with STK392-150. I suggest contacting the seller on this.

The service manual is available here.

This is a convergence output IC problem. 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

Note: there are also pico fuses (on the same convergence board) that need to be checked/replaced

This sounds like convergence output IC problem. 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
Note:The convergence/defletion/power board (the one the IC's are on) of this model is on the left hand side (when facing the back of set) also check for blown pico fuses when replacing the convergence IC's The best way to replace the IC's resistors and possibly fuses is to remove the entire board.

Yes - If you are failry handy and take your time its a DIY project.
Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Here are some photos of convergence problems.




Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

You have to remove one leg of each pico fuse to test them properly. Same goes for the resistors. Other options is you have a bad soldering joint or a faulty STK chip still.

Hi again and welcome back to FixYa,

Appreciate the direct "Ask Me'.

Based on your original post, only the STK ICs were replaced. Presumably 392-040, the surrounding resistors and pico fuses could very well have been affected as well. Depending on the board revision (pls confirm location numbering on the actual board), the resistors could be:
RZ104 -RZ106 - 270 Ohm 1/2watt
RZ133-RZ135 - 27K Ohm 1/16 watt
RZ136 & RZ138 - 3.3K Ohm 1/8 watt
RZ146 and RZ147 - 3.9 Ohm 2 watt
RZ148 and RZ149 - 150 Ohm 2 watt
while the pico fuses would look like the image below.

Good luck and Thank you for using FixYa.

You didnt replace the STK's? You must replace the convergance IC's or you will continue to have this problem.