How to unlock my stereo. not getting any sound with tuner or cd

You need cable called RCA. What goes out of one unit goes in to another. Get the owner manual and read it. It will show you how to connect the wires to the components.

Connect the RCA jack to to tuner input in back. CD player to the aux in back.

Try this:

http://stereobarn.com/how-to-connect-a-stereo-system1/

Here's a link for the manual, see if it gives you a clue to whats going on:

http://www.pioneerelectronics.com/StaticFiles/Manuals/Car/DEH-X3500UI_OwnersManual112712.pdf

Bill, did you ever figure your issue on your "no sound" problem? I'm having the exact same issue with a used car I bought that has this same stereo in it. CD plays and has sound, tuner shows its on but no sound. ????

Maybe an FM amplified indoor antenna could help you to get a stable FM signal.

start with the tuner, hook up the equalizer to the tuner, then on the rear of the equilizer hook up all the peripherals except the amps which will go to the tuner outputs and all will feed thru the tuner to the amps and out to the speakers

FM tuner module may be faulty and need replacing. It may simply be dry joints on the tuner which will come good if you resolder the dry joints.

Is your stereo sytem amplified? if so then the remote turn on wire may be hooked up to your power antenna turn on wire. The amp needs to be connected to blue w/ white strip.......not solid blue. The solid blue turns off to lower a power antenna when the tuner is not in use. Blue with white always stays on with tuner cd or ipod.

sound like the tuner it's self is going bad.  Have you checked the antenna connections?  Try holding on to the antenna when the radio is fading out.  Sadly the radio is part of the stereo and not a separate module.  You need a new stereo, get one with HD radio...you'll love it.

Use the remote and switch it to be in the sub mode (top right corner of remote) It is here (in the sub mode) that you can change volume and inputs.

Assuming that the four speakers are connected to the amplifier, then the amp is the most likely problem component. Does the amplifier show a power light when the system is turned on? Note that there is probably another fuse in the amplifier power wire, near the battery.