SHARP GF 525 - TECH REQD

Hi to all - advice needed please
Just added a 525 to my small collection of box's - all is fine and the box is in great nic apart from a couple of issues - would be gratefull for any tech advice

1.Left channel woofer and possibly tweeter are working but sound level much lower than right channel which is booming well

2.light scratches on tape deck doors

thanks in advance & PEACE OUT!

Gaz - Great Britain

1. Switch cleaner irons out 90% of such issues and is always the first step

2. A few scratches are fine! If it's the clear plastic then this can be buffed and polished