Laing DDC pump repair PCB mod

[jalyst]

I'm struggling to find/remember what was said, but I did find the old post he noted on the possible PWM functionality of the Toshiba (I have not tested this myself though):

Interesting thanks!
Hopefully someone is able to explain how we might enable PWM functionality on one of the PCB's floating about out there!?
I'd be willing to sacrifice my MCP35X, I'll have 2x soon...
But it may be best to give it to someone else to do the mod, as I don't have the gear/experience.

Not sure I understand the 35X comments, you are not going to remove a perfectly good working 35X board are you? I would not do that, I would only use these replacement boards for burned pumps.

I'll have a "spare one" soon....
Hasn't it been demonstrated that some of these alternative PCB's offer appreciable performance/efficiency over that used by the 35X?*
Could've sworn I've already read that....

The only big downer so far is that none seem to do PWM, once added we'd have an even better pump than the MCP35X!
For the folk that are prepared to "have a crack" at swapping-in the new PCB themselves of course
I'd be prepared to have a go...
Once PWM's integrated & we have a PCB that's proven as better performing & more efficient than the MCP35X's PCB.
And once there's excellent community doco/instructions, & once I have all the gear for the job!

The radiator version shouldn't matter other than you'll have more noise issues to deal with than a stand alone pump since the radiator flavor can't be decoupled the same.

RE cooling & de-coupling of the MCP35X (apologies, rest of this is OT)...

I had a closer look at the swiftech site & am double-checking with them.
But I think I'll be able to use their heatsink & fan!? (probably won't bother w/the fan)
Doesn't look like the sound dampener is usable w/the MCRx20 Drive Rev.2 though
Still, I'm guessing the way the mcp35x is built into the rad...
Is inherently more dampened than a stand-alone mcp35x, if an owner hasn't bothered w/any dampening?

*when they're all compared at top-speed, which is what non-PWM's always run at of course.