A replace front screen for my jvc kwadv793 car stereo

http://manuall.co.uk/jvc-kd-r331-car-radio/

FIRST PRESS THE RESET BUTTON BEHIND THE FACE IF DONT WORK CHECK ALL SPEAKER WIRES SOMETHING MIGHT BE TOUCHING

This is the wiring codes
2005 Dodge Ram 1500 Truck Car Radio Stereo Wiring Diagram
Car Radio Battery Constant 12v+ Wire: Pink
Car Radio Accessory Switched 12v+ Wire: Brown/Red
Car Radio Ground Wire: Black/Dark Green
Car Radio Illumination Wire: Orange/Dark Blue
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger: N/A
Car Stereo Amp Trigger Wire: Dark Green/Red
Car Stereo Amplifier Location: Located behind the glove box.
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): Dark Green
Left Front Speaker Negative Wire (-): Brown/Red
Right Front Speaker Positive Wire (+): Violet
Right Front Speaker Negative Wire (-): Dark Blue/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Brown/Yellow
Left Rear Speaker Negative Wire (-): Brown/Light Blue
Right Rear Speaker Positive Wire (+): Dark Blue/White
Right Rear Speaker Negative Wire (-): Dark Blue/Orange

if you are only getting the front speakers, you are hooked up in stereo mode. Are you using red white and yellow cables? Is the source in stereo? Try a digital coax cable.

VC stereo systems come in a number of different styles and models, from portable "boom boxes" to stereo receivers designed to be used with entire entertainment systems. When a JVC stereo malfunctions, it's a good idea to perform a few basic troubleshooting steps to correct the problem. Often, the solution is very simple, involving something you can correct immediately and which will allow you to continue using your JVC stereo system without having to call a repairman.

ok from what i can gather it sounds like something broke inside the unit and you might wanna replace it. Im sure you can find a much better radio really cheap. I had a similar JVC model and it gave me headaches. I think you will love this model instead. Trust me its soooo much better and priced really well for its capabilities.

JVC KD-R800 30K Color-Illumination Single-DIN CD Receiver with Dual USB 2.0 for iPod/iPhone and Bluetooth

Radio wire colors:
P o w e r Memory (+12v Constant) Yellow Ignition (+12v Switched) Red Ground (-) Black Dimmer Pink/White (Alpine only) Power Antenna Blue Amplifier Turn-on Blue/White Phone Mute Light Blue (Sony only) S p e a k e r s Right Front (+) Gray Right Front (-) Gray/Black Left Front (+) White Left Front (-) White/Black Right Rear (+) Violet Right Rear (-) Violet/Black Left Rear (+) Green Left Rear (-) Green/Black

1991 Oldsmobile Cutlass Supreme Car Stereo Wire Diagram
Car Radio Battery Constant 12v+ Wire: Orange
Car Radio Accessory Switched 12v+ Wire: Yellow
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Gray
Car Stereo Dimmer Wire: Brown
Car Stereo Antenna Trigger Wire: Pink
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 4′
Car Audio Front Speakers Location: Dash
Left Front Speaker Positive Wire (+): Tan
Left Front Speaker Negative Wire (-): Gray
Right Front Speaker Positive Wire (+): Light Green
Right Front Speaker Negative Wire (-): Dark Green
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Brown
Left Rear Speaker Negative Wire (-): Yellow
Right Rear Speaker Positive Wire (+): Dark Blue
Right Rear Speaker Negative Wire (-): Light Blue
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Press and hold select button on front of receiver
Use left and right control know (the one you would use to forward or reverse a track with the cd)
This will carry you into some more settings, including the hour and minute access
Use the volume knob to rotate to desired hour

if it is a moving mechanical front panel, then that needs re aligning, or there is a buildup of grease in the sensors. FixMyRadio.net