Samsung LA40R81BD

[Kangawallafox]

 
Hi, has any one seen a problem like this , It's a Samsung LA40R81BD , no DTV, no tv at all, no sound , when I plug in a DVD  it works but no sound ? hook up a PC and works fine with sound , I checked PSU and there were 2 crook caps 2200uf 10v  changed them out and it's still the same ?
any ideas anyone  ?    would anyone have a service manual for this model
any help would be great,
 Thanks Paul