【Overview】 ・This item is a repair and restoration of a junk item from approximately 50 years ago. Although the normal operation of all functions has been repeatedly confirmed, it is being sold as a junk item due to its age. Due to the recent increase in return scams, we are unfortunately unable to accept returns as a general rule. We kindly request no claims and no returns. 【Product Description】 Product: Stereo Cassette Deck Manufacturer: Sony Model Number: TC-K5 Release Date: Around 1977 Price: 59,800 yen 【Appearance】 ・The front panel and function keys are clean, with almost no noticeable scratches. There is a small dent about 1 cm in diameter on the rear right side of the casing, and a very slight rust was found, so it has been repainted. Considering its age, it is almost a beautiful item. 【Repairs and Adjustments】 ・Complete disassembly, cleaning, and repair of the front and rear of the drive unit, and reapplication of lubricant ・Complete disassembly, cleaning, and repair of the head block ・Cleaning of recording and playback volume controls ・Replacement of capstan, reel, and counter belts ・Repair of playback, auto shut-off, fast forward, and rewind mechanisms ・Repair of the first-stage amplification circuit ・Adjustment of DC servo motor speed ・Adjustment of playback, recording, and VU meter sensitivity ・Adjustment of record/playback head azimuth, demagnetization, and cleaning ・Cleaning of pinch roller and capstan 【Operation Check】 ・All functions, including recording, playback, pause, fast forward, rewind, Dolby circuit, timer standby, and memory function, have been confirmed to be working. 【Sound Quality Check】 ・Wow and flutter is 0.10%, which is very good. As far as listening to commercially available music tapes, I think it sounds good enough for music appreciation as a cassette deck that is almost 50 years old. (Playback may not be possible depending on the storage condition of overseas tapes or old tapes) 【Accessories】 ・One test tape used for recording, playback operation check, and adjustment 【Important Notes】 ・Please use it for about 1-2 hours a day, as the resin parts have deteriorated over time and may cause malfunctions. ・The playback speed (pitch) needs to be adjusted by opening the casing, but it can be finely adjusted with the semi-fixed resistor of the FG servo motor control circuit.