What is the state of the power LED? Does it turn on at all? Does it flicker rapidly when you press any of the channel (pr-/pr+) buttons on the tv?? If the LED flickers, confirm that the jungle i.c.(TDA8361/2) is healthy by testing ohms between pin# 10 to ground, and also pin#36 to ground: ohms should be >100. Replace i.c. if ohms are too low in any case. If ohms are ok, then check supply to the jungle i.c., especially the standby control and the vcc circuits.