I recently purchased an Aquaero from sidewinders w/o the powerbooster, since they don't sell them with that option. I had PM'd Shoggy to ask him what components need to be changed on the PCB if I was to add my own heatsink, to make a powerbooster. He was nice enough to provide me with the information. Basically you just add 2 resistors in parallel to existing resistors on the PCB. Anyone who's taken basic electronics classes knows resistors in parallel are less the the lesser resistors value. 1/R1+ 1/R2 = 1/Rt. So with those changes we are just lowering the values of 2 resistors on the PCB.

My goal was to run my D5 pump off channel one, but I was figuring the I'd probably end up blowing up something on the Aquaero. So I looked up the transistor used for each channel, and sure enough, they transistors are only rated for up to 20W. http://www.onsemi.com/PowerSolutions...do?id=MJD45H11

So doing a little more thinking, and eventually searching, I found that the made the same exact transister in a higher power package; a TO-220 (the stock one is a DPAK). The TO-220 version is able to handle up to 70W, so it should easily be able to power my D5 pump. http://www.onsemi.com/PowerSolutions...t.do?id=D45H11

So my next issue was figuring out how I was gonna mount my new transistor. I haven't removed the old one yet; I'm gonna try to get that done tomorrow at work (I work at a semi-conductor manufacturer - so I just gotta ask the rework person if they can do me a favor, when they aren't too busy). I already mounted the new transistor to an old asus pwm heatsink from a board I blew up at work a couple years ago lol... so far it's looking like it should work nicely. My plan it to mount the heatsink on the exsisting standoffs that were sticking up off the back of the Aquaero.

Here's some picks of the heatsink, which should keep everything nice and cool


And a picture of the schematic that I made following traces, and ohming out things with a DMV:


So who thinks this will end in smoke?