4 blinks of the power light relates to a power supply problem.
Its a TX-L-42S 10b , far too nice to just chuck away ..
Whipped PSU board out , and can't see anything burnt or bulgy Capactitorish .
tested a few components and they seem ok ..
Even found a Service manual but although I can read and partially understand some, its outside my brief to diagnose ,
But capable of testing under instructions from some more experienced person !