Another "radio no workee" issue - BMW Luxury Touring Community
 
LinkBack Thread Tools Display Modes
post #1 of 8 Old Apr 29th, 2009, 10:12 am Thread Starter
Member
 
neurodoc's Avatar
 
Join Date: Apr 2009
Location: Tigre, Buenos Aires, Argentina
Posts: 32
Another "radio no workee" issue

Hi there,
Despite my 8 weeks experience owning a 2001 1200LT I already have learned something about the radio, and would like to share it with you: when the BMW dealer delivered the bike to me he made a demo of all the features of the bike, including the radio. On the way back home (about 20 km from Buenos Aires down town), I noticed the broadcast stations started fading until only a "blank" noise was heard. Cd´s worked fine. Some days later I went back to have this repaired. One week later (??!!) I got the bike back with the problem apparently solved, along with an explanation of "the complexity" of the job they had done to fix it. Back home, the radio was dead again. I called the dealer saying I believed it had an antenna problem... but the guy said that it was impossible as everything was thoroughly checked. With the vast experience in radios I acquired as a Neurosurgeon I started to figure out what was wrong at the less complex part: the antenna. I looked into the service manual of the bike finding only a drawing of the antenna, no info about connections, etc. I removed the plastic cap, unscrewed the fixing screw and pulled from the antenna´s rod to remove it from it´s housing. ON the rod, and under the screw was a so-called Morse connector (cylindrical piece of plastic with a slotted cone that expands when the screw is tightened) After removing completely the antenna´s rod there was a hole in the aluminum bracket that acts as antenna holder.. and at the other end a loose antenna cable. As these type of antennas are supposed to be bi-poles... there was any logic in this: as the inner lead is supposed to contact the rod and the mesh of the cable should be grounded. No parts seemed to be missing. Soldering the cable to the antenna´s rod and the mesh to ground would make no sense at all, cause it would prevent me to remove it in the future (Ie: to cover the bike during winter). So I took a piece of thick plastic (Coke bottle cap) and cut a round disk out of it. The disk fitted exactly into the hole in the antenna´s body holder. Later on I drilled a hole in the center of the plastic disk and passed a 10 cm long x 2mm OD electrical cable trough it. Next step was to strip 5 mm of the cable isolation, flattened it a bit and applied soldering stuff on it (to prevent it from rusting). Now I placed the disk into the hole, replaced the antenna rod, the Morse and tightened the screw. Finally I also placed the plastic cover on the rod. Using a tester I checked continuity between the antenna´s rod and the 2mm cable passing trough the hole of the antenna´s holder. Now I striped the bike´s antenna cable carefully separating the mesh (which i twisted to form a nude cable) and the inner -extremely thin + lead. As this lead is covered by a wide insulating tube, I striped 2 cm of the isolation of the 2 mm cable and pushed it into the isolating sleeve. Then I twisted the + antenna lead around the cable and soldered it. (previously I had slipped a plastic heat shrinkable spaghetti on it) Once the inner lead was isolated y soldered a washer to the cable made out from the twisted mesh and screwed it to ground. When I turned the radio on, sound quality was crystal clear and signal strenght excellent (Even the Long and Short Wave worked!!!) What I made was a easy contact inspired in those of the rear lights of any vehicle: a drop of soldering stuff connected to a wire contacting the bulb (in this case the antenna). I am very proud of this because a bit of common sense solved a problem BMW´s service could not diagnose after having the bike 1 week in their repair-shop!

There's one way to find out if a man is honest - ask him. If he says, "Yes," you know he is a crook.
Groucho Marx
neurodoc is offline  
Sponsored Links
Advertisement
 
post #2 of 8 Old Apr 29th, 2009, 11:40 am
Senior Member
 
Wolfgang's Avatar
 
Join Date: Jun 2002
Location: Budapest, Hungary
Posts: 2,269
Re: Another "radio no workee" issue

Quote:
Originally Posted by neurodoc
Hi there,
Despite my 8 weeks experience owning a 2001 1200LT I already have learned something about the radio, and would like to share it with you: when the BMW dealer delivered the bike to me he made a demo of all the features of the bike, including the radio. On the way back home (about 20 km from Buenos Aires down town), I noticed the broadcast stations started fading until only a "blank" noise was heard. Cd´s worked fine. Some days later I went back to have this repaired. One week later (??!!) I got the bike back with the problem apparently solved, along with an explanation of "the complexity" of the job they had done to fix it. Back home, the radio was dead again. I called the dealer saying I believed it had an antenna problem... but the guy said that it was impossible as everything was thoroughly checked. With the vast experience in radios I acquired as a Neurosurgeon I started to figure out what was wrong at the less complex part: the antenna. I looked into the service manual of the bike finding only a drawing of the antenna, no info about connections, etc. I removed the plastic cap, unscrewed the fixing screw and pulled from the antenna´s rod to remove it from it´s housing. ON the rod, and under the screw was a so-called Morse connector (cylindrical piece of plastic with a slotted cone that expands when the screw is tightened) After removing completely the antenna´s rod there was a hole in the aluminum bracket that acts as antenna holder.. and at the other end a loose antenna cable. As these type of antennas are supposed to be bi-poles... there was any logic in this: as the inner lead is supposed to contact the rod and the mesh of the cable should be grounded. No parts seemed to be missing. Soldering the cable to the antenna´s rod and the mesh to ground would make no sense at all, cause it would prevent me to remove it in the future (Ie: to cover the bike during winter). So I took a piece of thick plastic (Coke bottle cap) and cut a round disk out of it. The disk fitted exactly into the hole in the antenna´s body holder. Later on I drilled a hole in the center of the plastic disk and passed a 10 cm long x 2mm OD electrical cable trough it. Next step was to strip 5 mm of the cable isolation, flattened it a bit and applied soldering stuff on it (to prevent it from rusting). Now I placed the disk into the hole, replaced the antenna rod, the Morse and tightened the screw. Finally I also placed the plastic cover on the rod. Using a tester I checked continuity between the antenna´s rod and the 2mm cable passing trough the hole of the antenna´s holder. Now I striped the bike´s antenna cable carefully separating the mesh (which i twisted to form a nude cable) and the inner -extremely thin + lead. As this lead is covered by a wide insulating tube, I striped 2 cm of the isolation of the 2 mm cable and pushed it into the isolating sleeve. Then I twisted the + antenna lead around the cable and soldered it. (previously I had slipped a plastic heat shrinkable spaghetti on it) Once the inner lead was isolated y soldered a washer to the cable made out from the twisted mesh and screwed it to ground. When I turned the radio on, sound quality was crystal clear and signal strenght excellent (Even the Long and Short Wave worked!!!) What I made was a easy contact inspired in those of the rear lights of any vehicle: a drop of soldering stuff connected to a wire contacting the bulb (in this case the antenna). I am very proud of this because a bit of common sense solved a problem BMW´s service could not diagnose after having the bike 1 week in their repair-shop!
I always knew that fixing LT's is similar to brain surgery. Nice job and great write up!

Wolfgang

K1200LT 1999 Champaign SOLD
R1100RS 1994 Teal SOLD
R1150RT 2003 Blue (Sold)
R1100RT 1997 Blue


Pest, Budapest Hungary

"Travel is fatal to prejudice, bigotry, and narrow-mindedness."
Mark Twain

Wolfgang is offline  
post #3 of 8 Old Apr 29th, 2009, 12:34 pm Thread Starter
Member
 
neurodoc's Avatar
 
Join Date: Apr 2009
Location: Tigre, Buenos Aires, Argentina
Posts: 32
Re: Another "radio no workee" issue

Fixing An Lt Is More Complex Than Brain Surgery!!!!!

There's one way to find out if a man is honest - ask him. If he says, "Yes," you know he is a crook.
Groucho Marx
neurodoc is offline  
 
post #4 of 8 Old Apr 29th, 2009, 2:39 pm
Wrencher Extraordinaire
 
jzeiler's Avatar
 
Join Date: May 2004
Location: Hazel Green, AL, USA
Posts: 13,229
Re: Another "radio no workee" issue

Well done Cosme!!


That is exactly how this forum began, the dealers were clueless on the technology the LT brought to the forefront. We all had to figure it out ourselves.
Sounds like you have a few more skills than the average Neurosurgeon.

John
2009 K1300GT Red Rocket
2009 R1200GS (Gone)
2005 K1200LT Ocean Blue Blue Wizard 110 K and counting...
2006 Bushtec Turbo+2 Spell
2004 330 Ci Convertable
K4AN

Have ridden a Motorcycle in all 48
But lack DE, MA, RI and CT with the 2005 LT

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
jzeiler is offline  
post #5 of 8 Old Apr 29th, 2009, 3:04 pm Thread Starter
Member
 
neurodoc's Avatar
 
Join Date: Apr 2009
Location: Tigre, Buenos Aires, Argentina
Posts: 32
Re: Another "radio no workee" issue

Yes I am a clever Neurosurgeon: besides repairing my bike´s antenna, I also can chew gum and cross the street at the same time! :-)

There's one way to find out if a man is honest - ask him. If he says, "Yes," you know he is a crook.
Groucho Marx
neurodoc is offline  
post #6 of 8 Old Apr 29th, 2009, 8:00 pm
Senior Member
 
gunny's Avatar
 
Join Date: Aug 2003
Location: Kings Mountain, NC, USA
Posts: 3,089
Thumbs up Re: Another "radio no workee" issue

Good job, well done!

Bet you are a most excellent surgeon too.

B D R
gunny is offline  
post #7 of 8 Old Apr 29th, 2009, 8:23 pm
Senior Member
 
cfell's Avatar
 
Join Date: Apr 2004
Location: Round Rock, TX, USA
Posts: 7,794
Re: Another "radio no workee" issue

Quote:
Originally Posted by neurodoc
Yes I am a clever Neurosurgeon: besides repairing my bike´s antenna, I also can chew gum and cross the street at the same time! :-)

Now.. once you can get comfortable turning the bike...we'll be impressed . =)

Just kidding.... Thanks for helping those loved ones in your care...
cfell is offline  
post #8 of 8 Old Apr 29th, 2009, 8:25 pm Thread Starter
Member
 
neurodoc's Avatar
 
Join Date: Apr 2009
Location: Tigre, Buenos Aires, Argentina
Posts: 32
Re: Another "radio no workee" issue

I appreciate your opinion! thanks a lot! Cosme

There's one way to find out if a man is honest - ask him. If he says, "Yes," you know he is a crook.
Groucho Marx
neurodoc is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the BMW Luxury Touring Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Sudden bad gas mileage issue gpolakow K1200LT 0 Aug 25th, 2008 11:35 am
OK ... tell me about this windshield fogging issue? GSinNC K1200LT 7 Mar 12th, 2006 10:16 pm
Bob's handling my COMM issue Robin K1200LT 6 Dec 22nd, 2005 6:39 am
MapSource lnowell GPS 8 Nov 9th, 2005 3:32 pm

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome