My radio channel won't go past 90 - 2008 Subaru B9 Tribeca

all stations, AM and FM?
is the antenna , broken? or unplugged from rear of radio?

past 90.?
that is FM. and FM must have an antenna to work
or are you saying the button fails to advance the stations.
if yes, that is a bad radio.

Try changing your headlamps, and if it still won't work you will need some toothpaste and peanut butter.

Mix the two together and you will create a paste wich you need to place a layer onto the cd. Put the cd into the player with the paste on it. Now go and puncture all your tires and switch on and off the engine. Now it should work!

sounds like your speakers aren't connected properly. check your speaker leads coming from your radio and make sure they are positive to positive and negative to negative. if you're using an external amplifier,check your RCA cables and your speaker outputs on the amp. make sure thr remote turn on lead is connected, otherwise the amp won't even power on.
hope that helped, good luck

Your radio is in theft lockout, you need the security code that came with the owners paperwork new.

How would someone on the internet know if a fuse was a
problem?

Check all your fuses

Not a fuse if you can see the channel you set it to

It could be a bad amp. Those come with a factory amp usally right behind the radio. Hopefully you can find a used one from a scrap yard. Click Here to search in your area.

90 % chances you also have a shorted alternator it kills the battery.
I have two Luminas and one Malibu and Corvette (mid/late 1990- 2000's) they have the same problems... suddenly dead batteries
Please check alternator when replacing batery.

sam problem here in my dawoo 19*90 it won t trun on + when it s on a white smoke come out what should i do guys

Get your subscription refunded. There is nothing wrong with your radio. if they can't make it work, don't pay them.