Ther is no problem with wifi.Only problem occurs, when I plug the RJ-45 cable into the modem's ethernet port.And few months back, when I came to this new house, I saw the N and L was reversed in the wiring.Kicked the electrician's a$$ and he did something and said its fixed.Not sure, if still that problem is there, as my tester shows fine now.Ealier , when switched off also, the L had current.