Replacing the diode has not helped. Died controller ((( The controller has been filled with resin. Had some work to clean it. The question now is - if I changed to a working chip (ATMEL), will need special firmware or will be enough this - aquastream XT-Firmware 1.09, DIY-Flasher?

I ordered a new diode - it will be soon to come. After replacing the diode, I will inform the result of repair

Sven - thank you for additional information, I hope it will help

Thanks, I'll try to replace the diode itself. Are transferred to other countries are very far (and expensive).

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Confronted with an issue. Improperly connected cable USB pulling the +5 V is on the other connector (Pin 4 D-). Then, of course, ceased to operate the software. I want to ask - my pump is beyond repair or electronics will not recover? I lifted the hood and checked all the diodes. This diode was burned. Unfortunately, I do not know what the face value can be replaced. Here is his picture: Please forgive me for my English - it is not my native language. I look forward to a reply.