I am still working on a tv that would only power on for about 6 seconds and then shut off. A couple days ago I found no voltage coming from a couple of the voltage regulators. They are both on the same heat sink. On the heat sink next to it there are 2 regulators also and they had roughly 6 volts coming out. I am trying to figure out where the bad component or short is. I am having a heck of a time. I was trying to determine whether it is one of the transformers or not. There are three transformers in a row and they are all common to each other on certain pins. I'm still not sure how that works. If they're all stepping different voltages why are they all common? And I can't find any results with the part numbers on the transformers or the regulators. I've seen where sometimes transformers have thermal resistors I was thinking that is a possibility. But the voltage must kick on for a quick time if the tv powers fully on. Also, The Diode on the same (no voltaged regulators) sink appears to have its Annodes common with ground. Is it normal to see reverse bias on these boards like that? All the caps seem good. Any help would be appreciated!
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