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#1
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Blank Screen
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Alan Z
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#2
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Sounds like the mk4 has a corrupted rom mate, the battery going flat has probably caused this (as it was not powered down correctly).
You can try and resurrect it buy putting a know good version of the OS through (different to what was on there), it may come back, but thats not a promise.
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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode. |
#3
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Very similar topic here - same symptons and diagnosis.
http://www.xoutpost.com/electronics/...-radio-ok.html |
#4
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Ok Gents thanks to you both for the very quick response, I believe the current OS is V30 unfortunately I don't have any other, although I had noted within the forum V32 which I downloaded last night. I'll give that a go and see whether I can burn a copy or failing that I might get a copy plus Nav update as advertised within forum. If it’s the Rom done does it mean sender the header unit to Germany?
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Alan Z
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#5
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Scenario: Dashboard display has gone blank but is energised from off position, all function buttons on either side of display all appear to work: phone, tape, CD radio and possibly even the MK4 Nav but as there's no display I can't say for certain? (Possibly if I could remember what sequence of buttons to press I may be able to get directions from the SatNav, but that's just speculation?)
The DVD/Nav player power lamp is lit and remains that way when the ignition is on, nothing unusual had occurred prior to the display going blank although the car battery wasn't fully charged, this point may just be coincidental! 1. Action taken was to remove the battery overnight to allow the car to fully power down and at the same time recharge the battery. 2. The following morning the fully charged battery was refitted and the car was started, no improvement. 3. Removed the two green relays and two fuses which power the DVD/Nav, connections checked and refitted, no improvement. All components are clearly identified via the rear fuse panels legend. 4. The DVD/Nav was then totally removed, its aerial, plus the blue and purple wiring harness plugs were disconnected from its rear panel. These were cleaned using electrical cleaner and then refitted. 5. Within the battery compartment the TV modules' blue and grey wiring harness plugs were removed, cleaned and refitted. The system was then powered up and the display was fully restored. From the above actions taken and the results achieved I can only assume I have managed to remake a defective connection on items 4 and 5. Finally I rewarded my successful endeavours by updating the OS from V30 to V32, all functions as normal as I'm yet to discover what benefits can be achieved via this upgrade, other than an alternative night display?
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Alan Z
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#6
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V30 to v32 are just minor bug fixes and the ability to read dual layer map discs.
Nightmode is not an OEM update. Having done steps 1 - 5 and still nothing and only the firmware upgrade indicate a corrupted OS. Glad it all working anyway.
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Sept 03, M3, Silver Grey. Retro-fits: Modded Mk4 DVD Drive, OEM Bluetooth, VR Control, Rainbow Speaker Upgrade, Sony SOT Amp, HK Sub, CCFL, Intravee II, NightMode. |
#7
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Cheers for the info.
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Alan Z
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#8
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Congrates! You seemed well determined, good it is now working thanks to these guys who dishout tips too.
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1. BMW X5 4.6i Sport RUMBLE IN THE JUNGLE, the beast of Southern Africa! 2. BMW 318iM 3. Lexus RX300
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