I'm amazed this thread is still active, and with problems similar to mine, no less...
We are the second owner of a 62HM94, have had it for about a year now. Worked with no issues up until late May, when the bulb blew with a loud bang. We replaced the bulb (we believe it to be at least the third bulb installed in this TV) a couple weeks later and the TV returned to normal functioning until about three weeks ago, when it began to have difficulty turning the lamp on (solid red indicator, flashing green indicator just before a retry), though sound still works and I can still change the input source blind. At first it only took a couple of retries to bring the TV to life, but now the problem has degenerated into taking half an hour or more of retries to get a picture, if at all.
From what I'm reading above, and by the fact the TV does still turn on properly occasionally (and it works great when it does, until it's turned off), it sounds like the lamp ballast might have gone bad. What exactly is involved in trying to repair these ballasts, and where would I find one online? The cheapest I've found them online is $165 on eBay, which is honestly a little more than I'm willing to pay when I'm not sure if the TV will last another half a year without developing some other problem.
Any help is appreciated!