40w mr16 halogen flickering (no dimmer)

[Medindexer]

My pair bulbs started fluckering after 2+ years so I assumed the bulbs were at their life end. But replacement units still flucker.
I assume MR16 is the code for the fitting which are 2 pins about 1mm in diameter. They look like this:
https://www.johnlewis.com/calex-35w...94DSEYCzXAF8sT-5pjNIPf8WOO8flzqMaAthuEALw_wcB

 

[JohnD]

I can understand why you'd think that.

European and international names for lightbulb bases are in logical sets

e.g. GU4 is 4mm pin spacing, GU10 is 10mm

E27 is a 27mm screw, E14 is a 14mm screw.

B22 is a 22mm bayonet, B15 is a 15mm bayonet

However MR16 is a term of American origin. It doesn't refer to the pins. It refers to the size of the glass and the type of reflector. Its's "Multifaceted Reflector" with 2 inch glass.

Because it measures 16 eighths of an inch in diameter.

Obviously.


Measure your pin spacing in mm.

The flickering is probably a loose connection somewhere along the supply or switch, but, if they are "low voltage*" with a sort of "transformer*" it might be a fault there.


If you have a fault and need to replace the kit, you can probably get mains voltage LED lamps that are a reasonable equivalent. They will run cooler, last longer, use less electricity and don't need a "transformer*" they might be a better replacement.

*these are terms about which there is interminable argument. It is very dull and will not help you.

 

[Medindexer]

Thanks for that. They are 4mm apart (centre of pin to center). The old and new bulbs both say 12V so I guess that means transformer
They have been installed when flat was built 10 years back. I know nothing about electrical fittings so I guess this is an electrician job then, would you agree.
By the way, it's a 2 light switch and both bulbs flicker.