2 blown 35v caps on Mod1 MM...????
 

Well i just now got around to looking at this better, it happened weekend before last at at big race, it happend right at the begining of the race when i was lawn darted onto by another buggy..... and i saw it when i came into pit half way in (13 minutes) for my battery swap i was kinda worried but figured it still worked so why quit...... well it still works fine i just need to know what to do with it now......


One cap is completely toast and is about to fall off since it has come loose from the board, the middle one next to it has a nice fat dent in the end of it but is solid on the board.......id like to replace both but i dont have any of these and i dont have soldering iron until christmas (gave the hobbyshops back and even after christmas i wont have the right tip) ?????? what to do? can i just cut the busted one off and run on? i have an 1800 35v external cap along with all the other mod1 stuff from arthur.

what are my options, anyone in the christmas spirit who would be completely confident fixing it if i pay shipping both ways and for the 2 new caps.....


any ideas

GriffinRu fixes them, but he moved and I am not sure if he is up and running yet..or if he is even fixing them at all any more

He said he won't be around until the end of Jan...

arthur isnt availble to do these anymore for awhile last i talked to him, this was his own personal mod1 mm i bought off him.


*** edit **** chris said end of january but id like to get it done by january

Careful soldering on the board when you do get an iron. If you dont own a soldering iron I assumed you dont have a heap of experience soldering. I've had a decent amount of experience soldering little fiddley things and circuit boards (modding consoles etc) but this is a different game all together. With the pcb itself an incredible heatsink, you need to use a powerful iron, and with so many heat sensitive components nearby its easy to ruin something. I've soldered on a few MMs succesfully, but also killed 4 of them trying.

You could just solder onto the battery leads perhaps...

Good point :yes:

How is he doing?

i have ALOT of experience soldering actaully, i said i had to give the hobby shop's 936 back last weekend (i do almost ALL the shops soldering for people who come in) and ill have my new 936 at christmas from the gf but i know it does not come with the right tip..... and plus i dont see how youd get to the back side tab of this cap.... its tucked underneath another part of the board so i guess id have to pull that board off????? the soldering part isnt a big deal i have done plenty of work on boards too i just dont have the right equipment and i dont have access to our lab at my old job (had the most badass soldering station and magnifing glass setup) i used it to fix two of my specktrum recivers and my mm in my slash.

can i get a pin point tip for a 936??? if so ill order one and do it myself if someone would like to expain how to pull the boards apart......

YEah well you should be sweet then. You do need to seperate the power board from the brains to get under the caps, I've wrecked a MM doing this too haha. I just used a super fine tip and a solder sucker and got it pretty easily, stupid cheap solder sucker is near useless though, if I had a proper vacuum thing it would've been a billion times easier. GL with it :)

better question can the 936 do it even if i do have the right tip???? its only a 60watt iron i believe, the one in our lap i used was 120watt and it worked incredible, but only being half the output i dunno if thats enough or not......

and back to one of my original questions can i just remove the dangler and run it as is for now until after christmas.....

For being only 60watts the 936 (with 908 [Large] iron) is an extremely capable iron. I've been using the original small tip on mine for well over a year, and it's done everything from MM circuit boards to the positive tab on A123s, soldering two 10ga. wires together, etc. It could only be better if it had the larger tip.

but you need a smaller tipped "wand" to better concetrate the heat when soldering on boards to do it fast with out over heating over portions of the board right??? i was taught to do it quick, hot, and fast......

I use a 60 watt Weller iron on my ESCs. Don't use a solder sucker on these, use wire mesh. It works much better. I solder caps on all the time, thats part of over-powering Novak ESCs.