No picture after replacing convergence ICs on TN50x81

Check your soldering. Check the vertical power board on the far left when looking from the back. It has fuses on it as well.

Depending on quality of STK chips, they could have been bad or failed right away. Best things is to look at the schematic, verify what colors you can move and see which STK chip is not functioning.

If both chips are not function after replacement, likely a fuse. Be sure to verify the resistors next to the STK chips.

Flash focus button push,didn't solved pictures convergence problems.The tv convergence board is dead.The 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u $300-350 for parts and labors.

convergence ics need replaced suggest going to local tv repair guy and getting it fixed pretty cheap

Go to Encompass Parts Distrubtion for List of Parts and Prices to your TV type in Model number.
You need to replace either the convergence board or Both ICs on convergence board they are big black ICs STK392-020s Mats has them 1-800-628-1118
Covergence board# AA95-02002A

The three blinks indicates a convergence IC fault. The convergence ICs must be replaced with the manufacturer replacement part. Use only the original replacement part. Your set uses STK392-110 convergence ICs.
These ICs are mounted on a large heat sink. Yes, you can replace it yourself and save few hundred bucks. But you must be knowledgeable enough on how to solder, resolder and use a multimeter.
You will need:

1. Convergence ICs
2. Heat sink grease or thermal compound
3. Soldering iron
4. Solder lead.
5. Digital multimeter
6. Solder pump
7. Small side cutter

Feel free to inform me if you decide to replace the ICs yourself

This is failure of convergence out ICs in TV. Qualified TV tech will replace convergence out ICs or board.

Replace the convergence IC's - P/N STK192-110 with part STK192-150 or 180. Then you can go back in and make the detailed convergence settings and get your picture back in alignement. Also check the flame-resistant resistors around the ICs to make sure that none of them have opened up.

What was the STKs that was in set ? If 110s always upgrade to STK392-180s. If they were 392-560s go back with the same. they worked differently then the 110s 150s 180s

Check the pins on the convergence ICs to make sure the solder isn't bridged between any two pins. You will need a magnifying glass to make certain.

Remove the right speaker grill, there you will see some adjustemt knobs, I never tried it but might be helpfull.