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Tv have a problems known as a convergence problems,it dead.The tv convergence board must be replacing parts to solved the tv picture convergence problems.U have all the tools like a soldering iron,desoldering pump or a roll desoldering braid and a roll of solders?Can u also do basic soldering works?Yes,to all these answers.Tries websites like Tvrepairworld.com,Tvrepairkits.com to buy a convergence kit to do the repair ur self.Or the shop,will cost u like $300-350 for parts and labors.
This is a convergence problem that is either poor solder connections at the convergence ICs or defective ICs. If you can solder, you can fix this yourself. Update this if you wish to attempt the repair and I'll provide additional details and instructions.
Replacing the whole board will fix it, but is a bit of overkill. If you can solder and feel comfortable working inside the set, you can fix this yourself. Let me know if you wish to attempt the repair and I'll proviode additional details and instructions.
Check this website to buy the entire convergence amplifier board. Replacing the entire boars is a DIY since there isn't any soldering involve only open back cover of the TV and unplug a few wires to remove the old board and install the new one. Keep in mind that this board could be used or reburbished. Samsung no longer has the assembly.
If you need more info let me know.
glad it was helpful! I had researched quite a bit before I started and realized there was a real lack of detailed info for the wdx2x25 models so I figured I would take some photos and post while I was at it.
If fixing the PWR board doesn't do the trick, getting the other two out is not as bad as you might think - just tedius. The V26 Chassis Replacment manual (different than the main service manual) has reasonablely detailed step by step instructions to disassemble. Let me know if you need it and I can email.
I repaired a convergence problem on this model by locating IC8C01 and IC8C02, the two large convergence chips on the main pcb(center board) and solder all the leads making sure not to leave any solder bridges! The unit was over 4 years old and used often. Those chips get pretty heated and make the solder brittle and crack around the leads.
I had the exact same problem. I read the posts - jiggled the large heat sinc and saw the instant improvement of the convergence - intermittently - (the most helpful posts by FFJim and MikeNJ1964 thank you!). I then got a copy of the repair manual (online) and isolated the two Convergence Power Chips IC8D01 and IC8D02 according to the repair manual and are parts HIC-STK392-040). I was able to use an alternate way to get to the cold solder joints (broken solder points) on the bottom of the entire motherboard (all three boards) assembly (without removing the middle board) by removing many of the cables (9 or so) and leaving just the tube cables in the back right corner connecting the RGB complex. After removing the cables, and unscrewing the 3 wood screws holding down the plastic (black) housing holding the main boards, I was able to slide out, lift and twist the motherboard assembly on it's side while leaving the RGB complex cables at their location. Looking at the bottom of the motherboard assembly (inspecting all the solder joints) I found the area of cold solder connections for the STK392-040 by seeing where the two Mitsubishi WS-55805 IC8D01 and IC8D02 solder points were located. It appears the reason these solder points get loose is becaus of the large Heat Sinc they are connected to would heat up, lean and will break loose with movement of the TV. By just re-soldering the cold broken lead points (which were visible) it repaired my unit entirely. This can be done at home with just a simple solder iron and solder (make sure you heat the lead and solder pad and apply the solder to the hot area (not the iron). I had to do that to about 6 of the 30 or so leads. Then, I retraced my steps assembling the unit and it worked great!
Here is an image of my main board assembly from the manual.