Laing DDC pump repair PCB mod

[zenix]

The pumps he is selling do not come w/ the modified PCB that he also sells. He sells DDC3.1's and DDC3.2's. The only real difference is the PCB on them. So if you were to throw in the modified PCB's in them. Then they would be pretty much the same pump.

He is using another PCB on the MCP350 But not the blue one.
Also the MCP350 is not a 3.1 but it has a black impeller, so its a 2.

The PCB is replaced by the famous Japanese SANYO motor driver. It has built in overheat, motor lock and even water leak protection. It's much more advance, reliable and silent than the original. Moreover, it use 2oz copper thickness PCB and Teflon wire for the power cable. It also has the TACH/RPM wire(blue wire in pics). We have confidence and our custom PCB is provided with 1 year warranty

The seller also told me this

The 12W DDC use our new Sanyo motor driver PCB, it's not on sale in ebay yet. It's running at 3600rpm, the same speed as a MCP350. The 12W is black impeller. There are test in the internet that black impeller has bigger center hole than the latest blue impeller, and the performace is better.

And the MCP355 is 3.2, without any modifications on the PCB.