Wanted: Dead BMW MK3 Navcomputer

hans.schaaper · 9th February 2010, 20:40

Looking for dead MK3(s) for parts.

JohnDotCom · 9th February 2010, 21:42

Any particular parts Hans?
I have loads of broken, and working spares used for repairs.

hans.schaaper · 10th February 2010, 09:53

Hi John,

I have one with a very peculiar fault.
When you turn the menu knob one step left or right the cursor on the display moves two steps.
For instance when entering a street name the curser moves a c e g, same thing in the main menu and when selecting a radio station.
The BMBT generates the correct ibus message ie "BMBT --> GT : BM_Knob: Left 1 step".
I tried loading a different OS to see if maybe the code handling the knob would end up in a different memory location but to no avail.
Still think it's a memory problem either in the processor or external.
It's a pity there's no documentation on these units.
I realize this is not a commercially viable enterprise, more an exercise for the brain.

Hans

9th February 2010, 20:40	#1
hans.schaaper Avid contributor rover 75 2.5 V6 auto Join Date: Feb 2008 Location: Alkmaar Posts: 197 Thanks: 0 Thanked 3 Times in 3 Posts	Wanted: Dead BMW MK3 Navcomputer Looking for dead MK3(s) for parts.

9th February 2010, 21:42	#2
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Any particular parts Hans? I have loads of broken, and working spares used for repairs.

10th February 2010, 09:53	#3
hans.schaaper Avid contributor rover 75 2.5 V6 auto Join Date: Feb 2008 Location: Alkmaar Posts: 197 Thanks: 0 Thanked 3 Times in 3 Posts	Hi John, I have one with a very peculiar fault. When you turn the menu knob one step left or right the cursor on the display moves two steps. For instance when entering a street name the curser moves a c e g, same thing in the main menu and when selecting a radio station. The BMBT generates the correct ibus message ie "BMBT --> GT : BM_Knob: Left 1 step". I tried loading a different OS to see if maybe the code handling the knob would end up in a different memory location but to no avail. Still think it's a memory problem either in the processor or external. It's a pity there's no documentation on these units. I realize this is not a commercially viable enterprise, more an exercise for the brain. Hans