jay, I can tell you with 100% certainty that it wasn't a cap that went on Jeff's, it was a FET. In fact, it was the FET at Q1.



The FET's on the MCP355 have been known to be bit buggy at times. I remember a on guy here that got some replacement FET's from Laing Hungry and was able to replace it and got his working again, though that won't do Jeff any good as the PCB is torched pretty good. When they first came out, the 3.2 had a very good reliability record, now as it seems they are coming to what may be EOL on Laing's end, they seem to have joined the DDC-2 is regards to reliability. Maybe it's a planned move by Laing to get us to buy the 3.25 or the newer yet PWM versions, don't really know.

Jeff, were you using a custom top? If so, which one (I'm gonna guess XSPC)? Most of the companies that re-brand the pumps won't honor the warranty if a top has been used. This is because you've modified the pump from the original sale condition and are asking it to work out of spec's.