EvilLithiumMan
Enlightened
BB750 \'Miracle\' repair
(So exactly who is the Patron Saint of Sandwich Repair?)
Shortly after Xmas I recieved a Badboy 750 board and a TX1K emitter. I had already built up a BB500/Q3 combo and felt I could tackle more. I carefully assembled my module. I double, triple and quadruple checked the connections. I then hooked up some test leads and connected it to two NiMH cells. The room came alive with photons. I was thrilled.
The only thing left to do was to pot the assembly and place it into the MiniMag. I decided to try the module in the MiniMag prior to potting; that shouldn't hurt anything, right? Well, I don't know what happened, but my module never came on. When I removed it from the flashlight, the odor told me something was horribly wrong - the 1N5817 schottky diode was blown - I could clearly see a crack in the SMT device.
I was really upset. What the Hell happened? I couldn't complain to Wayne - after all, the module worked fine outside of the light. I must have done something wrong; just don't know what. Threw the blown module into my scrap bin and cried my self to sleep. I knew there was no way that I could repair it.
[Scene switches to calendar on wall with the days falling away to denote passage of time]
Last night Wayne put up some BB750 S bin and MM+ T bin modules for sale. They didn't last long. And it must have lit a fire under my ***. I knew I had some 1N5817 diodes available. But I also knew my 20 year old Weller Solder Station and 'precision' tip were not the right tools. But I just had to make an attempt.
Here's what I had to start with:
... And the end result:
I know it doesn't look too elegant, but damn if that puppy doesn't throw a boatload of photons. (Runs hot though. Really don't care to run it more than a couple of minutes without a cool down period).
(So exactly who is the Patron Saint of Sandwich Repair?)
Shortly after Xmas I recieved a Badboy 750 board and a TX1K emitter. I had already built up a BB500/Q3 combo and felt I could tackle more. I carefully assembled my module. I double, triple and quadruple checked the connections. I then hooked up some test leads and connected it to two NiMH cells. The room came alive with photons. I was thrilled.
The only thing left to do was to pot the assembly and place it into the MiniMag. I decided to try the module in the MiniMag prior to potting; that shouldn't hurt anything, right? Well, I don't know what happened, but my module never came on. When I removed it from the flashlight, the odor told me something was horribly wrong - the 1N5817 schottky diode was blown - I could clearly see a crack in the SMT device.
I was really upset. What the Hell happened? I couldn't complain to Wayne - after all, the module worked fine outside of the light. I must have done something wrong; just don't know what. Threw the blown module into my scrap bin and cried my self to sleep. I knew there was no way that I could repair it.
[Scene switches to calendar on wall with the days falling away to denote passage of time]
Last night Wayne put up some BB750 S bin and MM+ T bin modules for sale. They didn't last long. And it must have lit a fire under my ***. I knew I had some 1N5817 diodes available. But I also knew my 20 year old Weller Solder Station and 'precision' tip were not the right tools. But I just had to make an attempt.
Here's what I had to start with:
... And the end result:
I know it doesn't look too elegant, but damn if that puppy doesn't throw a boatload of photons. (Runs hot though. Really don't care to run it more than a couple of minutes without a cool down period).
