Radio Won’t Turn On...

Hi, the fuse is probably good, however unless you check it for continuity you're never really sure. Check it out with your VOM and just follow the wire backwards from the radio connection towards the battery.
Have you worked on the car lately, particularly It's electrical system? I found that I have unusual things happen shortly after I work on a car when I inadvertently pulled a wire loose, Etc.


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Oh, one other thing... I own two Alpine stereos with the chiklet buttons (and I'm looking for a third one, a 7374) both of which are similar to yours, and have found that -usually- those radios are pretty darn good, operationally speaking.
Start with the radio connector itself and see if your positive lead... Or on some Alpine's both of your positive leads... Have sufficient voltage going through them and being delivered to the back end of the radio itself. If you have 2 positive or hot battery leads going to your radio as many Alpine's do, make sure that the ignition is turned on when you are checking your leads for voltage.

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Along 512pilot's thinking, one thing you could do is remove the passenger footwell panel and see if any inline fuses are present in the (added) wiring for your radio. My Nakamichi radio also has one +12V all the time connection and one +12V with key "on" connection. The +12V all the time connection had/has a small inline fuse added, and, at my last service, it was blown (I'm assuming when they tried quick-charging the battery). The all the time +12V wire from the stock radio fuse (via the connector k) is a light blue-red wire in the passenger footwell so you should see something added there and is a place to confirm/deny +12V (as is where the light blue-red wire leaves the k white connector on the fuse-relay panel). Good hunting!

 

That's a great point Steve. There very well might be an inline fuse in fact I would almost bet on it.

To answer the question about removal, depending on the model when you remove the faceplate, there might be a small lever on the left or right side which locks the radio in place. Lifting up on this lever should unlock it and let it slide toward you, exposing the wires.

Good luck

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put a new battery for a peace of mind and verify charging system

 

Sounds like a software reset I should've mentioned that as my Nakamichi has a small reset button that I've had to use after replacing the battery, using the battery cutoff switch, etc.. Is the small round button to the right of the knob on your Alpine also a reset button? (Mine looks very much like that. Not something that protrudes and you can press with a finger -- it's flush with the surrounding surface, and requires using something like a toothpick or pencil end to push, and has a small detent depression in the middle to locate the pointy thing used to do the pushing.)

 

Do you have the manual for the radio? Is that a reset button?