Thids is a hard call my friend. Your problem is most likly in the sweep/scan derived power supply as you stated there was a pblinking light.  If and only if you know abouty the hi voltage safty issues in these sets then you first can check for the obvious like cold solder connections (if you know how to solder. This could be a minor repair ,but for a set thats dead in the water its a very hard call as I stated before. You didnt say how old the set was but if its over 10 years old Iwouldnt (aT least me im saying) invest a dime into this set and invest the funds into a new set.  Good Luck

"Those who do not know their opponent's arguments, do not completely understand their own".

**For complete TV repair kits including parts goto www.TvRepairKits.com