Blew some caps on a Ice 240 this weekend at SAW's. I was going to send it in to Castle to have them replaced....Until I saw the $190 flat service (replacement) fee. I decided to pull the ESC apart myself and give it a shot. I was surprised to see only two 670uf capacitors on a 240 amp controller. I replaced them with two 1000uf Ruby's and luckily she fired back up. 
Needless to say I'll be adding some additional caps before I attempt any more high amp runs. Can anyone tell me what the putty like material is that's bedded down between the board and heat sink and where I can get some. I know it's there to help transfer heat. Thanks!
Needless to say I'll be adding some additional caps before I attempt any more high amp runs. Can anyone tell me what the putty like material is that's bedded down between the board and heat sink and where I can get some. I know it's there to help transfer heat. Thanks!
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