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Re: how hard to replace ICs?
Remove the 4 screws going through the IC's, unsolder the 18 pins each IC, take a small flat head screw drive place it between the heat sink and IC and pound gently until the IC breaks free, wiggle the IC's to make sure all pins are free and remove them.
Take rubbing alcohol and a Q-tip and clean where you need to resolder. "So you can see the pads better." Put heat sink compound on the heat sink, slide the IC's back in, secure them with the screws, solder the pin's making sure you don't blob pin to pin.
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Thanks for using FixYa. The issue is with the convergence ICs going bad and needs to be replaced. It’s not a difficult job if you want to do this yourself, you should require some basic knowledge about soldering-resoldering components. To start with you’ll have to open the back of the unit and then replace the ICs(STK ICs) which are located behind the black heat sink and also check the resistors as if they are short the ICs might blow again after sometime. There are repair kits available which includes repair instructions with the parts, if you want to do it yourself you can buy and repair it yourself. Please do rate the solution if the issue is resolved or post a comment for further assistance.
You have bad convergence ICs. There are 2 ICs in the convergence circuit, one is for the Blue the other is for the Red. You can buy 2 ICs for under $40.00. Replacing these ICs require soldering and desoldering skills. Sometime, the resistors in the convergence circuit go bad also. Be very careful, there is a very high voltage in a CRT projection TV the voltage is over 30,000 volts. Best of Luck Sabre
This is a convergence problem that is being effected by heat. If you can solder, you should be able to resolve this yourself. Please be aware that there are potentially dangerous high voltages present inside the set even when unplugged.
Look for the large black ICs attached to a heatsink that will be marked STKxxx. These are the convergence ICs. Try resoldering the pins on these ICs and report the results. If the resoldering does not resolve the problem, the ICs may need to be replaced.
The problem is either poor solder connections on the convergence ICs ore defective ICs. If you can solder, you can fix this yourself. Be aware however, of dangerous high voltages that are present even with the set unplugged. The ICs are STK392-120s and should be attached to a large heatsink. Try resoldering the pins first. If that fails to resolve the problem, replace the ICs.
that sounds like the classic symptom of the convrgence Ics needing to be replaced they are STK392-120 you can get both replacement ICs at the following link with free instalation instructions. here is the link. http://servicemanuals.vstore.ca/
make sure the tv is totally discharged, This should be done after being unplugged for 8 hours or you can physically discharge the capacitors.
As long as you know what to do to solder them back on, you shouldn't have anything else to worry about. If you have any questions, let me know otherwise a quick search online should give you complete instructions of how to put them on or you can ask me.