I just installed my Naxa NX-670, and now when I attach the faceplate, nothing works.

Naxa Electronics NX-667 Clock setting - Questions - Fixya

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Naxa Electronics NX-667, clock setting related issues. ... set up the clock time 1: press Source button to turn off unit 2: press Clock button to display clock 3: press ...

Naxa Electronics NX-667 Kd s35 manual - Questions - Fixya

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...kd-s35 Press and hold SEL button. Press ^ button 3 times to display H (hour) turnvolume knob to change hour setting, press down 1 time to select M (minute) ...

General FAQs - Naxa.com

If you have nothing on it, and it is reading 98% full, it may be that updates of operating software has been installed on top of previous ones, instead of overwriting. iPhones are bad for this, but the solution may be to format the unit and start adding music to your hearts content.

If you got it recently, you can check to see if the store offers any kind of return policy. If it does not, or enough time has passed that you don't qualify for it, you can also try Naxa's 90 day manufacturer's warranty. Check the support page here for the specifics of the warranty and the contact info.
http://www.naxa.com/newsite/support.html

Make sure the player is on during charging.

The NAXA NX-142 came with a miniature CD you must use the CD to install the software called AMV converter to your computer. Then run the AMV converter with the NX-142 plugged into the USB port. You can then convert certain videos like WMV files into AMV files which can be automatically uploaded to the NX-142 be sure to choose to upload the videos into the MOVIED subdirectory to help keep things organized on the NX-142 The AMV converter will allow certain settings to be selected. The manual is helpful but the printing is so small that I can't read it even with glasses.
Good Luck

Typaclly if you purchased the faceplate install kit, and harness kit, the install will be very easy. You will also get a set of instructions for each kit.
The first hurtle you will have to leap will be removing the old radio, this requires a set of removal tools that fit into the four holes in the face plate of the stock radio. This set may include 2 to 4 tools to put into the holes to unlock the unit, once you have it out, install your harness kit, faceplate and stereo.

Hope this is of some help.
Ed

I had the same issue. I bought my 671 mp3 car stereo from jujudeals.com and I was having the same problem. I called them up and they said that I have to go to clock mode. When in 'Clock Mode' you have to press and hold Select (SEL) and at the same time press FF/REV to adjust time. (Fast Forward adjusts hour, Rewind adjusts minute). If your still having problems contact the Naxa Electronics warranty department. Goodluck!

The manf claims hi power which usually means 50 X 4. More likely the actual power is more like 8 to 10 watts X 4.

http://www.naxaelectronics.com/downloads.php

Yes, you can. I was able to get my Dish Network remote to work with my Naxa 574 TV. Just follow the directions for the remote and you should be able to use it.