Grant demystifies the black art of Tire Changing and Repair to help you STAY on the road! "Very informative and practical." See the trailer 
Cotton or synth sweat-wicking t-shirts with the Horizons Unlimited logo on the front and a snappy slogan (changing every year) on the back.
Show your route on your panniers. Great conversation starter when you meet people on the road!
Motorcycle and travel books to inspire and inform you!
ll 5 DVDs with a custom printed slip case. "The series is 'free' because the tips and advice will save much more than you spend on buying the DVD's."
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#1
2 Oct 2009
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1200GS instrument cluster - LCD problem
Got a weird problem.
2005 BMW 1200GS. The LCD display on the instrument cluster has faded to nothing. If the sun is shinning in the right direction, I can just make out the display. I've got a Uniden 5w handheld UHF radio attached to the Autocom and a PTT button. When the radio is switched on and I press the PTT button, the LCD screen illuminates. The LCD also illuminates if I take the UHF off the bike (disconnect from the Autocom) and use it close to the LCD screen. I doesn't happen if I walk away a few meters. My mechanic at BMW is scratching his head!!! Any suggestions? 
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#2
2 Oct 2009
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Greetings Michael
Did the display fail suddenly or did it slowly fade away? A possible explanation might be that the LCD back light is not working properly. Some types of LCD back lights (e.g electroluminescent panel) use a voltage inverter circuit to generate higher voltages required to make the back light function. It's possible that when the UHF is transmitting the radiated energy is able to "trigger" the oscillator circuit that drives the inverter back into life and you have a working LCD display. A 5 watt UHF set will easily cause electronic equipment to malfunction when used nearby. The original faulty inverter circuit might be caused by bad earth or signal connection (somewhere). You may be lucky and find an electrical connector somewhere on the bike is corroded or not connected properly (and this could be anywhere along wiring loom, but in this case I think it's more likely to be an internal connection inside the instrument cluster and that would involve taking the instrument cluster apart with no guarantee of finding an obvious problem. I'm guessing that BMW will say that the instrument cluster will need to be replaced rather than repaired. Please use the appropriate grain of salt on my comments Good Luck Ian J
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#3
5 Oct 2009
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Thanks Ian.
The display suddenly failed. I'll be seeing the mechanic tomorrow, let you know the outcome. Cheers Mick
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#4
6 Oct 2009
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Couldn't find the problem.
Installed another dash and it worked. So it appears wiring is not the problem. Found a second hand one and it's getting installed today. Bonus is; 340km on the clock - I have a new bike . . . . Cheers Mick
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