Could be as simple as dust/shite build up thats moved about when you moved it, take the cover off and give it a good (gentle) hoover with the hairy attachment.

If that doesn't work i agree with 'rcgbob44', it be throw away technology these days, nothings built to last anymore. If it lastest forever no one would ever buy anything new and worl economies would colapse (just my opinion)

Cheers,

Shandy