Mitsu WS-65315 Chassis #24 2-2 Code Still Unfixed-HELP

I have a mitsu ws-65315 chassis #24. Turned on the Tv one night, came on fine, pressed the first # on the cable box to change channel, tv shut off, never to power up again. pulled out code 2-2. replaced convergence ic's with sanyo replacements, replaced fuses f9a02, f9ao3,f9a04, and f9a05, along with all 12 ic resistors 2w 3.9ohm. Turn on tv, I hear a ticking on the power board near the front of the set(tv screen end) then after 5 secs shuts off. still getting code 2-2....HELP please. I have no electronic testing equiptment, and am pretty new to this. I replaced all those parts to be thorough, and still nothing. Any info would be appreciated. thanks-Randy