thanks

[Mimbler1]

Roger, thanks for the usual lightning fast turnaround on the tunze 7200 electronic pump I sent in. One favor, as an engineer, I can't have closure till I know what failed! What did you find?
thanks, Mike

 

[rvitko]

Sure, the driver failed. This usually happens because a component was defective or the transistors were not sufficiently restrained against the heat sink and over heated. It is a finicky design without much room for error, a good one lasts forever, any flaw and they fail within a few months. That is the one bright side, you can usually depend on it in the long term any defects show pretty quickly.

 

[Mimbler1]

Thanks Roger! I'll be able to sleep tonight!
Mike