Problem need Solution

[WTA] [PnS]Double Din DVD Entertainment System

 Front View

•  6.5" Touch Screen (16:9 Display)
• DVD/DVD-R/Divx/MP3/CD compatible
• SD Card Input for Music Playback
• Fully Motorized with Angle Adjustment Via Button
• AM/FM Radio with 30 Presets, Auto memory, Preset Scan
• Reverse Camera Input
• On Screen Control Brightness, Contrast Hue & Definition
• 4 Channel RCA Pre-out
• Mute Button and Remote Control 
• GPS system 

Rear View

,

  Problem with the device...
The problem is no power at all (No light and screen is totally black). The wiring connection hook up to speaker and power source is as per the wiring diagram. But it is still not working.... and when I turn on the car head light, the unit got light on the surface of the unit. Only things is the unit got no power at all. When I open up the unit, I find 12V voltage inside the circuit board...

 Ps:
 Can anyone give me some ideal??






Touch Screen Section

Wiring diagram
 Battery +        -- Yellow
 Ignition           -- Red    
 Reverse Gear  -- Orange

 Antenna PWR-- Blue

 Lamp In          -- Pink

 Hand Break    -- Brown
 Ground           -- Black
 Speaker Front R -- Grey / Grey Black
 Speaker Front L -- White / White Black
 Speaker Real R  -- Violet / Violet Black
 Speaker Real L -- Green /Green Black