B&M Toplight Line Plus standlight stopped working

Workshop tales, trials and disasters.
Maintenance tips, techniques and myths.
Technical discussion, description and outright lies

B&M Toplight Line Plus standlight stopped working

Postby eeksll » Tue Aug 20, 2013 9:28 am

I have a Busch + Müller Toplight Line Plus LED the stand light recently stopped working. After I turned the bike upside down and did a clean with a hose ...

long shot but, anyone had this and fixed it? replacing capacitor or something similar?

cheers.
eeksll
 
Posts: 1230
Joined: Tue Oct 20, 2009 9:36 pm

by BNA » Tue Aug 20, 2013 10:50 am

BNA
 

Re: B&M Toplight Line Plus standlight stopped working

Postby find_bruce » Tue Aug 20, 2013 10:50 am

Oops. Fortunately the circuit is reportedly very simple
Image

That posts lists the components as

R1 220 Ohm R2 100 Ohm
C1 1 F, 5.5V
D1, D2, D3 1N4001 etc
Rectifier B80 1500R etc
LED1, LED2, LED3 superbright LED, 3000 mcd, 5 mm, ca. 1.6v, 20 mA

Am I right in thinking that each of the LEDs in the tail light still work, it is just the standlight that has stopped ? If so the capacitor looks likely. A 1F 5.5V capacitor is pretty easy to get hold of, eg jaycar or RS-online. Each of these are about 20mm in diameter x 6mm thick, so you would need to check the dimensions of the part you are replacing to make sure it will fit.
Image
User avatar
find_bruce
 
Posts: 3134
Joined: Mon May 09, 2011 8:42 pm
Location: Sydney

Re: B&M Toplight Line Plus standlight stopped working

Postby eeksll » Tue Aug 20, 2013 12:10 pm

thanks find_bruce, I was not really expecting any replies :). Not really very electronic-y myself, but i think I know enough to unsolder and re-solder.

i think all the leds are still working, I'll check that later tonight. ill probably get to it on the weekend and post back.

warning for everyone: dont wash your bike!!! first time i wash the bike in years and this happens. haha
eeksll
 
Posts: 1230
Joined: Tue Oct 20, 2009 9:36 pm

Re: B&M Toplight Line Plus standlight stopped working

Postby warthog1 » Tue Aug 20, 2013 12:48 pm

Just use baby wipes, a rag and mr sheen. No need to use water to wash the bike :)
User avatar
warthog1
 
Posts: 2235
Joined: Wed Jul 25, 2012 4:40 pm

Re: B&M Toplight Line Plus standlight stopped working

Postby il padrone » Tue Aug 20, 2013 2:18 pm

Washing is fine, just keep the bike upright and don't spray from underneath. It's the "upside down" bit that has probably caused the problems. All the B&M literature (certainly for the headlights) states that the lights are not waterproof but designed to be rain-proof, and not to mount them upside down.
Riding bikes in traffic - what seems dangerous is usually safe; what seems safe is often more dangerous.
User avatar
il padrone
 
Posts: 17456
Joined: Mon Apr 07, 2008 11:57 pm
Location: Heading for home.

Re: B&M Toplight Line Plus standlight stopped working

Postby find_bruce » Tue Aug 20, 2013 3:45 pm

eeksll wrote:thanks find_bruce, I was not really expecting any replies :). Not really very electronic-y myself, but i think I know enough to unsolder and re-solder.

i think all the leds are still working, I'll check that later tonight. ill probably get to it on the weekend and post back.

warning for everyone: dont wash your bike!!! first time i wash the bike in years and this happens. haha

Sometimes you just get lucky - I have been reading way too much lately about standlight circuits & had come across that pic.

If it were me, the thing I would be checking first is that I hadn't switched the standlight off, but I am sure a smart bloke like you has already checked that :)
Image
User avatar
find_bruce
 
Posts: 3134
Joined: Mon May 09, 2011 8:42 pm
Location: Sydney

Re: B&M Toplight Line Plus standlight stopped working

Postby Crawf » Wed Aug 21, 2013 10:44 am

Does it have the coin cell (cache) battery, replaceable?
Crawf
 
Posts: 1594
Joined: Wed Jan 09, 2008 8:20 pm

Re: B&M Toplight Line Plus standlight stopped working

Postby eeksll » Thu Aug 22, 2013 12:12 am

not sure about the battery.

So i get home tonight and the standlight is working !!!

so maybe water short circuiting the capacitor, draining its charge ... and now the water is gone, its working?

wandering if its worth opening up to have a poke or just leave it alone now.
eeksll
 
Posts: 1230
Joined: Tue Oct 20, 2009 9:36 pm

Re: B&M Toplight Line Plus standlight stopped working

Postby wqlava1 » Tue Aug 27, 2013 10:43 am

The most productive task remaining is to change the word "stopped" in the thread title to "restarted". Lucky. Unlike phones dropped in water which have a battery that keeps supplying power to keep electrolysis happening, the standlight capacitor's charge is depleted relatively quickly
2014 goal 52000m
Image
wqlava1
 
Posts: 475
Joined: Sat Mar 14, 2009 7:13 am
Location: Eltham, Vic

Re: B&M Toplight Line Plus standlight stopped working

Postby eeksll » Tue Aug 27, 2013 10:34 pm

leaving as is, decided fiddling was asking for trouble. Quick check most times i stop now.
eeksll
 
Posts: 1230
Joined: Tue Oct 20, 2009 9:36 pm


Return to The Shed

Who is online

Users browsing this forum: Dragster1



Support BNA
Click for online shops
Torpedo 7 Torpedo7 AU
Ground Effect Ground Effect NZ
Chain Reaction Cycles CRC UK
Wiggle Wiggle UK
Cycling Express Cycling Express
Ebay Ebay AU
ProBikeKit ProBikeKit UK
Evans Cycles Evans Cycles UK
JensonUSA Jenson USA
JensonUSA Competitive Cyclist