JL Audio Fathom f113 repair

[jdandy]

Originally Posted by McDaddy

Dan, do you happen to recall what size 2” machine screw you used to dislodge the heat sink?

I’m now 2 for 2 with the same problem after 3 years of use on each sub (very frustrated)? I sent the first one back for repair but I’m going to replace the cap myself as i’m confident it’s the same issue.

Karl.......I used four metric M6 phillips pan head machine screws. They measure 45mm length. They are slightly larger than the hole in the heat sink but the softer aluminum allows the machine screw to tap threads into it. Gradually screw them through the heat sink across the top, then screw each screw a turn or so back across the top until the amp heat sink pulls away from the recessed area of the subwoofer cabinet. Once the amp plate is free, unscrew the machine screws and save for future use.