I have have an Atlas combi 12/1500/50 that have worked perfectly until last week when it does not charge anymore with landline connected. No lights on the charger lit up, no cirrent and no on liggt. When I remove landline ”equlize” lits up. When measuring voltage it conform that it does not engage charging. F2 fuse is ok. I suspect that the resent thunderstorm Destroyed it. Are there any more fault isolTion to do? Could it be that the lNdline has too low voltage or bad frequiecy that shut it down? Are there spare parts or do I need to replace the whole unit? The converer works fine. Any leads in direction are appreciated. Thx!