did this to a LG recently... the guy told me that they charged him almost $200 for the last repair.. and all the did was replace the PSU.. so about a year later... caps blew again
they were 2200uf 10V.. i swapped em for 25V caps.. (same kinda issue.. it would shut off.. and then not display anything till it had like an hour cool off time)
the guys tv hasnt had even a flicker...