I need to replace the GX card on an EasySolar-II 48/3000 GX because of the rebooting problem discussed in this thread: https://community.victronenergy.com/questions/82963/multiplus-ii-gx-reboots-every-2-min-on-its-own-bro.html The dealer is ordering one for me. Before I get to site, can someone tell me whether I can do this from the front or will I need to take it off the wall? I have not done this before. Anything I should be careful of?