Hi. I installed NAVIGON v. 7.7.5, build 447 on ZESTECH car dvd special 2DIN gps for Chevrolet Cruze. Item Model No.:ZT-G712 (Made in China)
Description:
• High performance dual-core ARM11+DSP 800Mhz, Win CE6.0
• DDR 128/256MB,EXT storage up to 32GB
• 7", 16:9; HD LCD-TFT digital touch screen 800*480
• Support RDS/TMC
• Support SD Card/USB Port
• Built-in GPS navigation system, Support Finean/IGO /Route66/Tomtom/Gamin ect.

Software works great, until a door of the car is opened or if I modify the ventilation speed. On the screen appears the image of the car with a door open(or the ventilation screen).This is normal. After closing the door or the ventilation, the screen goes black. The only way to make navigation work again is to take out and reintroduce the SD card. The rest of the system(video player, audio player, bluetooth) works perfect, only when changing to navi the screen goes black. After starting again the soft, it works perfect until a door is opened or the ventilation speed is changed. If I run iGO(8,Primo,Nextgen) there is no problem. After closing the door, everything goes back to normal.
Please help me find the problem.