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That sounds a lot like my mom's tv except theirs is an 1987 maufacture.It came from a condo in Bethany Beach Delaware in 2000.The original owner didn't want to repair it because it was quote"too big and 13 years old"A new high voltage bleeder cured it.The switching power supply was groaning when turned on but no blown parts .Most of the original parts aren't available but Matt Electronics was carrying replacement bleeders and yokes for those.Don't know if they still have them or not.After cleaning and adjustment it produced a beautiful picture.Don't think it saw many hours in a beach condo.Still running today and gets played 16 hours a day though they use the vcr for the tuner.The IF kept drifting when they had digital cable and they would get buzzing etc every 3 months.The day they gave up Digital Cable 2 years it wouldn't stop AFT searching no matter what I tried so it's on EXT1 with the vcr/dvd combo as the tuner.Even has the original convergence chips.Unbelievable as all those STK4273s failed after a number of years.Convergence has drifted some though.Noticeable to me but they think it looks fine so I leave it alone.This is sort of a golden year Mitsubishi since it's just beyond the yoke failures(85-86) and before the cap leakers(90 and up)or leaky tubes(94 and up)
On yours in addition to resoldering the driver transformer and the area around the transistor there is a capacitor next to it that causes the Horizontal Output Transistor to run hot and fail.It's a 1uf at 160v.I always replace it with a 250v high temp cap(105 degree).You could still have a bad flyback,Hv bleeder or yoke.The problem with gambling a lot of money getting someone else to fix it is you may not get as lucky as my mom and the set has weak picture tubes and end up with a crappy picture.That is one pretty cabinet on that tv though.My mom loves the fact that there's plenty of room to put her nick nacks and pictures.That thing looks huge in their tiny mobile home living room.Takes up a whole wall.They love it but my stepfather is realistic to keep on the lookout for a newer one in case a CRT goes or some NLA part goes.He says he'll make something else out of the cabinet since he's a woodwooker.To nice to throw away.
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