Repair - Sony TC-630D Reel-to-Reel Tape Recorder 7” also have TC-252D

The listing

Sony TC-630D Reel-to-Reel Tape Recorder 7” 4-Track 2-Channel Stereo $75 The mechanism function intermittently. Everything else in excellent shape including the electronics 3 selectable inputs, a rare feature (see photo) Sony TC-252D Reel-to-Reel Tape Recorder 7” 4-Track 2-Channel Stereo $40 Partially works. Problem may be due to a possible loose or broken belt. Rewind and fast forward function normally but the capstan does not spin Everything else in excellent shape I have the user manual (pdf format) Related items: TEAC AKAI Sony JVC Koss Panasonic Toshiba GE Emerson Westinghouse Roberts Tape Recoder Tanberg Revox Tascam