ground issue or amp?

When you checked voltage on the remote wire, did you connect the black lead of the meter to the ground terminal of the amp?

yes. red touching the remote turn on wire and the black touching the ground terminal of the amp.

wait the ground terminal of the amp and the ground wire is the same right?

Yes same as black wire. Most people ground their meter to the metal of the vehicle. If you check it like that, it does not test the ground connection of the amp. If you used the ground wire of the amp for a ground reference point, we know your ground is good also. (At least good enough to power the amp up) What kind of amplifier are we dealing with? If you are willing to do a little footwork we can possibly repair the amp.

thanks for your help. the amp is Diamond Audio D6 600.4. i might be able to get warranty repairs for the amp.

When you checked the voltage on the power wire, did you have the radio turned on?  If not you really need to check it again.  You could possibly have a bad, not blown but a faulty AGU fuse.  With no current draw, the faulty fuse will show no drop in voltage. 

yes i did check the power wire with the car on and i was getting a voltage of around 14.

Now I feel comfortable telling you that your amplifier is dead. I just wanted to cover all the bases. If you can not get it repaired under warranty, and you want to try to repair it, just let me know.

so after talking the shop, they said im not under warranty anymore. i opened the amp to see if there anything wrong, but i didnt not notice anything. here are some pics.

Is there a protection light on the amp?  Is it on?   In the second picture, there is a 16 pin integrated circuit just north of the 2 transformers.  What is the number on the chip?  I do not need letters, it is probably a 494 or 594.  But it could be a 3524 or 3525. I just need the numbers.   Before we connect the amp to troubleshoot, you need to remove all 3 fuses from the amp and put a single 10 amp fuse in one slot.  Leave the other 2 slots open.