I have just moved into a new house. I am having a problem with the light in the front room downstairs. It was very dim (40W)so i tried to change it to a 60W or 100W bulb. This did not work. I have checked what voltage i have in the socket and it is only 188 volts (all the others are 240 volts). I have now tried to put a 40W bulb back in and this wont work now either. All the other lights are working fine. Does anyone have any ideas why i am losing volts from the previous ceiling rose to the front room? Thanks in advance.