I tried searching; the BF search forum yielded very few results (as usual); googling with the "site:www.bikeforums.net" yielded tons of results, but none pertinent to my problem. So yes, I searched, no it didn't yield results, so I'm asking a question:
Background: I have a Busch & Muller 4d Lite plus taillight mounted to my rear fender. It's been on my main commuter for about a year; maybe a little less. There are 4 LEDs in this light, but the 2 in the middle are no longer lighting. B/c I'm that guy, I have another B&M 4d Lite plus, so I connected the wires to the other light, and all 4 LEDs fired up, so I'm reasonably certain that the problem is in the taillight itself, and not in the dynamo, nor the wires leading from the dynamo to the connectors. Which leads me to my question(s):
-Is this a common/known problem for this product?
-How accessible are the guys of these things? I didn't just crack it open to have a look b/c I've never done so before and I wanted to get some background info before I tried.
-Is this likely an easy fix, for a guy who isn't electronically inclined?
The 2nd 4d Lite in my possession is intended for another project, but it wouldn't be a big deal to just replace the malfunctioning one, but it seems a wasteful shame to do that without even trying to revive it. Also, 2 of the 4 LEDs are still firing, and the light still basically works, ie, I'm still visible, but I'd like to be maximally lit-up whilst riding, so I wanna have a go at fixing the thing up. I'm just not really clear on how to go about it.....