Where can i purchase a volume button for the valor sd-900w?

This is usually a problem with the buttons themselves, repair/replace is usually the only solution.

this is a problem that there is only two things that you can do to fix this.
1. reset the radio if there is a reset button on your radio see what happens. if I fix the problem great. if it doesn't move to step 2

2. call valor tell them what it is doing find out the nearest service center is in to relation to where you live and send it to them for repair hopefully its still under warranty

have any more questions email me at [email protected]

No, it has no video input from what I can find.
This Single Din Head Unit with a 7" display states that it has an axillary Audio\Video input. It would work with a backup camera.

It sounds like you need to connect your red wire to a power source that shuts off with the key. The best way to find a source is with a multimeter to see what wires lose power when the key is off.

Here is the website for you to obtain support. I would imagine the unit is under warranty or can be repaired fairly inexpensively. Let me know if I can be of more assistance.

http://www.valormultimedia.com/Support/support.asp

Here is the website for you to obtain support. I would imagine the unit is under warranty or can be repaired fairly inexpensively. Let me know if I can be of more assistance.

http://www.valormultimedia.com/Support/support.asp

Who installed it? If you paid someone to install it, take it back. If you did it yourself, recheck the wiring harness adapter to make sure you didn't miss something when reattaching the wires.

I believe the valor is self generating. Ours is also not working and we need to replace it. Any ideas where to purchase one?

turn it on? and let it boom