I have a sirius mirge radio, that the back light stopped working. Everything else works fine but i just cannot see the screen at night. Can I fix it or get it fixed?

SiriusXm will warranty that problem no questions asked. I am on my fourth radio with that issue, well the prior three had it.
Sirius warranty dept phone number is: 866-257-7726
Hope that helps!

This seems to be common problem for this model (google it). I found a guy on ebay that will replace screen for $49 if you send him the broken unit.

my sirius satellite radio stopped working the screen states antenae not found in the car and at home on the boom box the antenae has been checked and is not the problem can this be fixed ?

http://satelliteradiofix.com/mirge.html

I have 2 of these I got at a yard sale and both had the dim screen
problem.I took 1 apart and everything looked fine.Put it back
together and put it back on the cradle and still did not work TILL I
squeezed down on the connection to the cradle and the radio.It lit up fine.Same with the other one.Its the bottom connection in the
radio that is worn from taking it in and out of the cradle all the time.
My XM radio had the same problem but it was the power cord that
wore out from taking the radio out every night and it powered up eratically like it was shorting out.Try squeezing it down on the
cradle and see what happens.

Same problem on my CX-7. I've had antenna replaced one so far. It takes about 30 minutes in the cold (usually on at night on my commute home) to get signal. I agree, during the summer months, everything works fine.

When mine goes time I squeeze the radio downward into the cradle and it lights back up.
Might be a weak connection. I'll have to hit it with contact cleaner sometime to see if it helps.

with starmate 3 press at same time menu +memo+band with the radio on (with sirius screen only)

Ditto - JVC KT-SR2000 backlight doesn't work (watched die yesterday), after 2 years, 10 months. Sadly JVC no longer represents quality.  
Note: Original JVC KT-SR2000 was a fire hazard - defective from start - overheated hardly describes it. BestBuy replaced first month. 

I'm having the same problem and all they reccommend is unplug the unit from the back for ~2 minutes and then plug it back in and power up.