PANASONIC TH42PG9W

[WILLYAM1]

HI yo all.
red green in ilght the screen in come on .
without any input can see the osd no signal is flickring when input is in somtime pic come by flashes and go.
any adia?no flashes led  always is green.
led in ysus is on and also in zsus.
could be logig or av or digital boards any expert with panasonic plasma?.
willyam