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Laing DDC pump repair PCB mod

wizard1238

n00b
Joined
Jan 8, 2011
Messages
2
After replaced the PCB of DDC 18W, the ampere increased from 1.5A to 1.8A,
the flow rate increased about 20% (using stock top)
The audible noise is also increased:eek: it should be caused by the increased rotation speed:cool:
The IC leg spacing is only 0.33mm, drag soldering is the only way:rolleyes:
I have accidentally reverse the diode and the most expensive IC burn immediately at connecting the power:mad:
This controller TB6588FG is an all-in-one design, it has built-in overheat and restart protection, only a few external component can get it work, the original laing design is unnecessary complex.
This IC also have built-in speed control, connecting a variable resistor can adjust the rotation speed.
More information can be found in the Toshiba semiconductor website, it has datasheet and official circuit to follow.

tb6588fg1.jpg

tb6588fg2.jpg

tb6588fg3.jpg
 
I just did a google search and it seems youve just posted on all the enthusiast forums....

Im guessing the PCB is interchangeable with all the PCB revisions from DDC?
 
I just did a google search and it seems youve just posted on all the enthusiast forums....

Im guessing the PCB is interchangeable with all the PCB revisions from DDC?

:p:p:p

It's designed for the enamelled copper wire connect location of ddc1 and ddc2, ddc3 need some trick
 
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