Megane indicator problem

[Bigal2cv]

My 1.9 dci passenger indicator stopped working I initially thought it was a bulb problem but after a ridiculous amount of time trying to remove it I found the bulb was okay it solved the problem for a day or so then it stopped again again bulb removed and replaced but stopped working again!
I am not sure what next! Any help gratefully received
AL

[darkmast3r]

Check rear light plugs & sockets on both sides. These can be corroded due to water ingress. I used a dry alchohol spray to clean off the green corrosion with a little wet & dry (1200 grade). This could be the cause.

[Bigal2cv]

Really sorry forgot to mention its the front indicator as I found out its very difficult to get too but not seen any obvious corrosion in there

[darkmast3r]

I would still check the rear clusters as they maybe linked, water could be causing a short in the circuit.

[Phil and Liz]

my 05 plate used to do this all the time on front indicators, nudge the bulbholder and it worked for a few days

glad to say my 08 doesn't do it , yet !!!!!!!!!!!!!!!!!

remember vauxhall corsa's used to do this as well and flasher units were changed with no result