Pilot light on old boiler

[sjmyles]

Hi
I have an old boiler which will get replace but AFTER christmas.
Its been fine but now I can no longer get the pilot to stay alight. It started switching itself off in the last few days and I had to relight the pilot each time but now it can be relit. (or rather it won't stay on when I do light it.)

is it the thrmocouple? Is that a big job replacing it?

cheers
Simob

 

[kevplumb]

probably
not exactly rocket sience make model might help if you get stuck