ATTENTION: All Postings that advertise items for sale will be deleted from the Discussion Forum. You may post sale items for free in the Classifieds section. Sign up now.
Loud hum noise in control center by Richard
We have only one or two things plugged into the 110 volt outlet. How would you suggest in checking the backup batteries? And do you charge them the same way as normal batteries are charged? Where are the backup batteries usually located? As long as the electrical cord is plugged into a 110 volt outlet it makes the humming noise with nothing plugged into any outlets.
email Richard
reply to message
post new message
search forums
