EOS 350d scroll wheel not working

trisnpod

Prominent
Oct 23, 2017
15
0
560
I bought an EOS 350D used off ebay, supposedly in working condition, however now it's arrived the scroll wheel used to change settings doesn't work properly. It sort of responds to scrolling to the right but sometimes jumps left and doesn't respond at all to left scrolling. So I can crudely increase settings but can't decrease them.

I've tried resetting camera settings but it still doesn't work, just looking for any other suggestions before I contact the seller.