12 Volt TV buzzing when on mains hook up
As we're not often on hook up I'd not noticed this problem until a couple of weeks ago.
The TV used in my MH is a 12 volt version operating through a regulated 12 volt supply (black box 12v dc to 34v dc input regulated to 12 volt dc output).
This works beautifully when run purely off the leisure batteries (i.e. no 240v hook up). However, when the 240 volt mains hook up is connected, firstly I lose the sound on the TV and then it appears the voltage regulator starts buzzing.
Obviously, by switching the 240 volt circuit breakers off, everything is back to normal.
Anyone out there had this problem or know how to rectify this problem?