Is my car stereo head unit fried?

I've installed a stereo setup into my car recently (Nissan Pulsar SSS, SR20DE), which consists of: Alpine CDE-102E Head Unit Alpine MRP-F200 4 Channel Amplifier Alpine MRP-M500 Monoblock Amplifier Kenwood KFC-W3010 Subwoofer Alpine SPR-17C Co-Axial Speakers...

Okay so my power protect light keeps flashing at low to medium volumes. I have a 500W MAC amp. I have a Kenwood cheap £100 4X45W head unit. It's 3 years old now. I ahve 1 base tube that was fitted with the amp. Now here's the difference..... I...

Recently i have been having problems with my car head unit. It is a brand new Sony one which was recently working. Yesterday when i hit a speed bump and the Aux. (sound) level remained the same no matter what it was set at (so i could have the volume...

I had a stereo in my car that had a detatchable faceplate so that i could take the faceplate off so it wouldnt get stolen...but someone stole the whole head unit itself! so now i just have a faceplate...is there anywhere that i can get just the head...

I have a Sony CD Multi player and want to change my car stereo do I have to stick with the same brand (Sony) car stereo head unit or will any make work with the Multi cd stacker? And do it have to rewire the electrics in the car for the new head unit...

i have a car head unit setup with pulsing neon lights and every thing with a wireless remote control wired in house i have 2 home theater receivers connected to each other for power and i want to wire the pre out of the car head unit to the receivers...

I'm getting 2 12'' kicker subs and looking to replace my stock head unit. I'm not sure what type of unit to get but I'm willing to spend around $150 for it. I want to know if the only difference between, say, a $50 unit and a $140 unit are their features...

I have an aftermarket sony head unit, and recently installed two subwoofers powered by an amp. I had no problems until I just recently had to replace my starter motor. My car wouldn't start so I tried charging battery and jumping the battery and my stereo...

I'm in the market for a car stereo (head unit) to work with the woofers in the trunk. The woofers dont work because the factory head unit doesnt have the input necessary. Would any fit? I assume I'd have to also buy a mounting bracket, correct? Where...