Lights not working

12 Nov 2022
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United Kingdom
Hi, can anybody help, one of the gu10 bulbs in my bathroom light fitting stopped working I replaced the bulb but the lights started working erratically,slow to come on or going off, I then replaced all the bulbs but none would come on so I bought another set and the same thing happened again, I have managed to get the lights working only if I have the 2 original builds fitted but I have noticed that the original bulbs are cold but the new bulb gets very hot .
The landing light by the bathroom has started to come on dim when switched on and when I switch on the bedroom light both the landing lights go very dim and sometimes both go off, when I switch on the bathroom light on both the bedroom and landing lights start working as normal and if I switch off the bathroom light they are ok ?
The bathroom light also is connected to an extractor fan.
As anyone come across this ?
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Show us what sort of bulbs (preferbly the packaging)

Have you got a dimmer switch?

When were the light fitting and switch installed, and when did they last work properly?

What has been changed since?
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What you have described can also occur if you have replaced switches and buggered up the wiring.

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