HMC5883L "strange" problem

Using Arduino Sensors
#1

Hi everyone (this is my first post)
I brought a 10Dof (the GY-80), all sensors work great exept HMC5883L
that return strange value

Raw:	-1   -2   0   	Scaled:	-0.92   -1.84   0.00   	Heading:	4.29 Radians   	246.05 Degrees   	
Raw:	-4   -1   1   	Scaled:	-3.68   -0.92   0.92   	Heading:	3.43 Radians   	196.65 Degrees   	
Raw:	-1   0   0   	Scaled:	-0.92   0.00   0.00   	Heading:	3.19 Radians   	182.62 Degrees   	
Raw:	-1   1   -2   	Scaled:	-0.92   0.92   -1.84   	Heading:	2.40 Radians   	137.62 Degrees   	
Raw:	-2   -1   1   	Scaled:	-1.84   -0.92   0.92   	Heading:	3.65 Radians   	209.18 Degrees   	
Raw:	-5   0   1   	Scaled:	-4.60   0.00   0.92   	Heading:	3.19 Radians   	182.62 Degrees   	
Raw:	-4   1   -1   	Scaled:	-3.68   0.92   -0.92   	Heading:	2.94 Radians   	168.58 Degrees   	
Raw:	-3   1   2   	Scaled:	-2.76   0.92   1.84   	Heading:	2.87 Radians   	164.18 Degrees   	
Raw:	-2   1   2   	Scaled:	-1.84   0.92   1.84   	Heading:	2.72 Radians   	156.05 Degrees   	
Raw:	-3   0   1   	Scaled:	-2.76   0.00   0.92   	Heading:	3.19 Radians   	182.62 Degrees   	
Raw:	0   0   -1   	Scaled:	0.00   0.00   -0.92   	Heading:	0.05 Radians   	2.62 Degrees   	
Raw:	-2   -1   0   	Scaled:	-1.84   -0.92   0.00   	Heading:	3.65 Radians   	209.18 Degrees   	
Raw:	-1   0   0   	Scaled:	-0.92   0.00   0.00   	Heading:	3.19 Radians   	182.62 Degrees   	
Raw:	-2   3   -1   	Scaled:	-1.84   2.76   -0.92   	Heading:	2.20 Radians   	126.31 Degrees   	
Raw:	-1   0   0   	Scaled:	-0.92   0.00   0.00   	Heading:	3.19 Radians   	182.62 Degrees   	
Raw:	-2   -1   2   	Scaled:	-1.84   -0.92   1.84   	Heading:	3.65 Radians   	209.18 Degrees

I'm using the internal pull-up and don't seem to be communication issue, in fact when I put a magnet near the sensor it stroke to the maximum value.
I've used different library but all with the same result anyone can help me?

#2

How are the configuration registers set?

#3 
Register Address 0 = 1110000 = 112     
Register Address 1 = 11000000 = 192     
Register Address 2 = 0 = 0     
Register Address 3 = 11111111 = 255     
Register Address 4 = 11111111 = 255     
Register Address 5 = 11111111 = 255     
Register Address 6 = 11111111 = 255     
Register Address 7 = 0 = 0     
Register Address 8 = 0 = 0     
Register Address 9 = 1 = 1     
Register Address 10 = 1001000 = 72     
Register Address 11 = 110100 = 52     
Register Address 12 = 110011 = 51     
Register Address 13 = 0 = 0     
Register Address 14 = 0 = 0     
Register Address 15 = 111100 = 60     
Register Address 16 = 0 = 0     
Register Address 17 = 0 = 0

This are the values, but I think that is a faulty device because in another HMC5883L device the library works very well and the registers values are the same.

#4