Same as Wolfgang, I had a lightning strike about 100 feet from my home and the F70 error was the only casualty, luckily. I did exactly as suggested (replaced the 125V/2A fuse) and all was well. One suggestion, though. I stayed with the fast-blow fuse. I have had my Panny for 18 months and this is the first problem with it - the factory fuse did its job perfectly. It protected the rest of my Panny. Fortunately, we have a very good quality power system in my village (hydro, only 15 years old, reliable, no surges, etc.) so I don't have to worry about anything EXCEPT lightning. I would NOT recommend going to the slow-blow fuse unless you have unreliable power and are replacing the low-amp fuses regularly.

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