Folks,
Thought best to create a new thread, following on from here -
http://forum.a8parts.co.uk/showthrea...731#post126731
Brief summary up until today;
- Bought car c4 weeks ago knowing the "TV tuner had been coded out" due to it being analogue
- On purchase, realised the Aux inputs are on the TV tuner so decided i'd look to connect up to get a bluetooth streaming device in (likely the Fusion BT-100)
- About a week ago got the TV address (57) activated on the VCDS and Mattylondon kindly highlighted that from my picture the unit was looped out and unplugged
- Plugged in the unit (2nd time lucky with power, thanks Matty!) but the MMI wouldn't boot, just cycles between black screen and the Audi MMI initation screen
From the above symptoms i assumed the tuner module was the issue so sourced a replacement from Ray, received today and connected and lo-and-behold, same issue... car seems to like keeping me on my toes, not a single issue i've tried to sort has been anything other than a further symptom of a deeper root cause!
So.... i'm guessing that the fact the MMI can run when it is looped would tell me the leads and signal on the black optical plug are intact and fully functional. Again guessing but i'm assuming the aerial, double red and double green plugs are superfluous to MMI operation leading me to assume the issue must be the power source?
Are my assumptions above correct? Any thoughts?
Do any of the other component in the boot (nav, DAB tuner etc) use the exact same power source such that i could use that, loop out that relevant component and try again? I've got a multi-meter but a) not sure what pins i'd be looking to pick up the 12volt signal (if that's what it would be?) and b) wary of potentially short'ing something if i fire up the power while having a multi-meter plugged into the pins...
Cheers,
Chris