The only downside to picking up the Otari MTR-10 ¼” analog reel-to-reel tape machine was that the VU meter lights had blown. This is pretty common for a machine that is nearly 40 years old. It’s not too difficult to fix the lights, but it’s time consuming to get to the meter and you need some soldering experience and patience.
It’s also very important to unplug the tape machine and make sure not to touch any capacitors as they can hold charges even after the unit has been unplugged. You can be electrocuted and do damage to yourself if you are not careful.