Convergence chips changed out now I have no picture
I had a convergence problem with a Hitachi 43fdx20b. I changed out both convergence chips and checked resistors. I had a 3D looking picture before but now I have no picture. My power light blinks and I hear a clicking noise. I also smell something burning. I left the rear cover off but can see no smoke or glowing resistors. took board out again and checked my soldering. made sure all of my connections were put back correctly. I am frustrated.....
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Convergence IC's are at locations IK04 and IK05. There are some resistors that will be burnt up on the board as well. Replacement IC's are stk392-150, and are easily purchased, even off ebay. For the resistors you may have to get the location numbers and research the value. If you need the resistor values you can email me and I will get you the info.
Yes this is a normal diagnoise. Just about every Tube type projection TV set ever made will one day need these IC's replaced. They are not really that hard to replace but you would need to know how to solder and unsolder on printed circuit boards, know the procedture, and then have a service manual handy to adjust the convergence after yoou replaced the IC's. If the tech works on alot of these types of TV sets's, most likely they could adjust them without having a service manua handy. This repair done by a pro should run you anywhere from 250 on up to 400 bucks depending on who does the repair and where. Good Luck