I have no display lights on my radio, used to work just went out, The radio and cd player still all function

Idid see a service bulletin concerning radio. sound and display lost after engine crank. turn key off, then back to accessory position, radio functions work. the fix is to reprogram radio with new software. I also saw several codes listed for radio, they were manufacturer specific codes. did you check for codes?

Sorry to hear the display is blank even though the cd radio appears to function. The display is usually an LCD with back panel lights that makes the characters visible. Most likely the small rice globes behind the panel are blown. Usually needs some sort of desoldering and resoldering to replace. If you can take the player out from the dashboard and take it to the local audio repair shop you will save quite a bit of money to get this fixed.

I am assuming your CD radio looks something like this.
http://www.beckerautosound.com/pdf_guides/om43-4462.pdf

time to rip it out and fit a after market one ,it sounds like microprocessor has packed up and its cheaper to replace than mess around trying to get it repaired

Yes more then likely it is a fuse, don't forget to check the fues panel under dash as well as under hood!

this happened to me after 2 years of having my 2006 Mazda 3, luckily i was still within warranty. the entire LCD had to be replaced in mine

the cheapest way to go is a replacement from a wrecking yard, unless it is an aftermarket stereo then the cost rises

If you need further help, I’m available over the phone at https://www.6ya.com/expert/michael_00678fd4800d19c5

The only thing that is left for you to do is to remove the stereo and then disassemble it and remove it yourself. A little daunting but needs to be done. Sounds like it went in wrong and then became jammed

your radio is shot, and the cd and tape player still works. You have to buy a new radio if you want to listen to a radio.

tepfy

inside the radio is a miniature bulb that back-lights the display, this is true of all radio's, in fact they all use the same tiny bulb, these do burn out from time to time, u will need to remove the radio/CD unit and then pull the top cover off, inside just behind the display u will find a small twist in socket that contains the bulb, u can buy this bulb at any full service auto part's store for about $2

Check for blown fuses