LG Combi DV1000 - DVD loading problems?

Hi,

Our LG Combi DVD/VCR DV1000 is developing a problem whereby the loading tray ejetcs the DVD before load is complete, or the unit just hangs up. Eventually the DVD will play but the number of times it now eject before running is up to 5/6 and becoming too annoying.

I have run a disk cleaner though it a number of times although suspect this is not the problem.

There is also no evidence of food or anything else the kids may have 'saved' in there.

Anyone any ideas?

Many thanks