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I have had Sony color monitors that went "all white" (and then the protection circuits shut off the set) when electrolytic capacitors were bad.
Since you work on a lot of solid-state "newer" TVs, I highly recommend that you get an ESR meter for testing electrolytics. They are worth their weight in gold. I have a Creative Electronics one; they seem to come up on Ebay fairly often and sell for under $100 there. It is actually not that complex a device, just an oscillator and a circuit to measure the signal that comes through the capacitor being tested, I think. Decades ago, my co-worker duplicated the one we had in our shop in Illinois when they could not find any new ones to buy anymore.
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Chris
Quote from another forum: "(Antique TV collecting) always seemed to me to be a fringe hobby that only weirdos did."
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