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I spent a lot of time in the TV last night cleaning and checking things out. Looks like I have 3 STK-4274's. All the resistors seem to check out, but the blue stk doesn't heat up so I believe it's dead. I have dealt with these STK's before in old receivers and have replaced them, then added a fan with success. So I think that is going to be the plan here. Too bad I don't have any of those old receivers laying around now I could scrap one from, but I'm sure I'll find one the day after I get the TV fixed.
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