Question about Televison & Video
The main board is probably bad but what you can do to verify this for sure, is to look for any chips that are burnt.
Also look at the capacitors, good capacitors will have flat silver tops on them where as if the capacitors are bad they will look puffy, pregnant, etc. The silver tops will be bulging on top. If you see any like this then you'll want to replace them with capacitors of the same UF rating and at least the same voltage or higher. Also capacitors can only go in one way with the marked side of the cap facing the marked side on the board.
The other thing you may want to do is with your multimeter, check the resistors and make sure the values are within range, if they are way to high or way to low then that would cause the convergence to still be off.
Also check to make sure that all the solder points for the convergence chips are neatly done and that none of them leaked over to another solder point. If this happens that would cause the convergence to still be off. Get a good magnifying glass and check each solder point on each convergence chip.
If you still cant get the convergence to come in then the board is bad for sure.
Posted on Feb 09, 2010
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Check for open fuses in the power supply and bad resistors around the convergence IC's. The fuses will be small pico type fuses. It is hard to say which resistors could be open because there are about a half a dozen of them around the IC's. Most of the time they will be physically burnt so keep your eyes peeled. Thanks for using fixya.
Posted on Feb 08, 2010
Testimonial: "Everyone on this website is very helpfull! I didn't fix it yet but I keep narrowing it down thanks to evryone here!"
Did you replace STKs with same as old STKs? STK392-570?
Do you know How to Enter Service Mode for Mitsubishi to make convergence alinement ?
Posted on Feb 07, 2010
Testimonial: "ladywinn hooked me up with the factory menu codes to adjust my convergence. Thanks again"
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Posted on Jan 02, 2017
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