“I purchased these at an estate sale and neither will power up.
The TR-707 is in very good cosmetic condition – maybe some dust. The graphics in the window are blurred and the battery cover is missing.
The TR-505 is in poor cosmetic condition. Some of the buttons on the bottom row and area below is dented and chipped. You can see the area in the last picture. The paper pattern guide sheet is peeling away from the unit and the battery compartment had old batteries leak. ” Click here to search for synths on eBay