This thread will show you how to self test your Tibo for sound, this can be a very useful tool to fault find your unit.
1) Insert the SD CARD into the GP5/GP7.
2) Press the RESET button of the GP5/GP7.
Enter Debug Mode
Press ‘Menu Knob Button’ once and ‘Zoom-In Button’ five times of the
device, followed by a pop-up window asking a password. Once inputting ‘3366’ for the password"
Simply follow the instructions below, if you get a problem repeat the steps below, if the problem persists email
support%@www.totalpda.co.uk.co.uk Sound Test 
Tibo Sound Test 
Linear Mode
