The bad cap symptom is hard to power up. Once on, it runs fine. Also, the issue has visual indications the tech checks for. This sounds like some other issue such as a part that has become heat sensitive.
Your TV tech would point a fan at the board in question to see if that board was the one to replace.
LN22B360 C5D powers on for maybe 30 minutes then powers off. Thought it might be the same capacitor issue as older models so since it was way out of warranty (MFG date May 2009) I opened up the back cover and checked for burst/leaking capacitors. None found. Looked over the power board (model number IP-5413T) for cold solder joints thinking it was a heat related problem but I didn't see anything obvious. Just wondering if anyone else has had this problem and what the fix was if any. Partstore.com has a replacement board, part number BN44-00232A for $107.72, but I want to make sure that's what it is before ordering.
Thanks for any and all help!