composite uses 1 cable. component uses three cables. but they all look the same.. all are RCA connectors.
if you use one of those in one of the component hook ups, thinking you were connecting the composite. you would not get a picture.
are you getting a picture, but no on screen menu?
Did you accidently press the wrong button on the 990 remote? so instead of the remote being in TNR it's in some other mode? and not sending the command to the 990 pre?
That's gotten me a few times.
_________________________
Outlaw Audio 990 pre amp
Adire Audio sub (SVS 12.2 driver)
CAL Alpha tube DAC
Parasound P/HP-850 2 CH pre
Pioneer PL-530 TT
Polk Audio SDA 2B
NAD 2600A amp
Danger Boy here