Squeaky Indesit WIDL126UK?

Hi there.

My WIDL126UK washer/dryer has recently acquired a squeak during rinse and spin cycles. It's around 5 years old but it hasn't been used heavily - I average two cycles a week, tops, and there have been whole months when it has done nothing.

I checked the belt, which seems tight and undamaged. I heard over the phone that it could be either something stuck in the pump or drum or the bearing's had its chips.

I use Calgon in almost every wash (I will admit to the occasional omission) and I have checked the filter but only found a little bit of gunk with no lint.

Please would you offer a little guidance in finding out what's wrong with it?

Thanks in advance.