it is possible, but I would do some additional checking first.
all those lights and the radio go to an orange wire.

I can't seem to figure out where it is on the light switch.
but using the light switch to turn on the dome light should power the dash lights and radio light at the same time.

I don't think that output is split, but could be wrong.
if it is split, then it could be the light switch, but if it isn't then you know the switch is good, you just have to find the break in the line.

if you have a map light it would be easy to back feed with 12 volts and see if everything lights up.

my bet is if you follow the orange lines back someone cut it somewhere. or pulled the plug that feeds stuff.