led lights dim and flickering

[runmaster]

Hi,
I recently replaced the three halogen bulbs in bathroom downlighters with LED bulbs and one worked fine other 2 dim and flickering.
I was told by a friend that I needed to change the original transformers for LED Drivers so decided to replace one of them first to see if he was right- I have just done this but light is still as before dim and flickering.
Can anyone help with this problem
Thanks
Runmaster

 

[Marvo]

Sometimes the ceramic plugs that push onto the pins of the lamp get damaged by overheating and don't make a good contact. Have a close look at the pins on the halogen lamps you took out, if they're dull looking or pitted it probably means you must replace the ceramic lamp holders (plugs).

 

[nickblake]

if you have replaced 12 volt halogens, then your friend is correct as 12 volt LED lamps run on DC , constant current where the old lamps were AC so change all the transformers to 12 volt DC Led drivers

 

[Marvo]

I assumed he's talking about MR16 lamps in which case most are designed to be a direct replacement for their halogen counterparts and will run happily on the existing 12VAC lighting transformer.

 

[Edd]

As you say one is working fine, swop the lamps around and see if the fault moves. If the one that works fine, works in the other fittings then it's likely a couple of dodgy lamps