I purchased this on Mercari for 2900 yen, but I later discovered that it has a dent and the volume control doesn't work properly. The sound is normal, but I can't adjust the volume up or down effectively. I tried to disassemble and repair it, but I couldn't do it properly, and when I tried to put it back together, I forgot to put in three screws (I've stored them, see the photo above). Also, I'm reluctant to open it up again for repairs. I've removed the broken AC adapter to reduce shipping costs. I'd like to sell it to someone who enjoys repairs, even in this condition. Thank you.