[Defective Junk Item] [Body Only] All 4 channels do not produce sound, possibly due to a faulty built-in amplifier... ◯ Key operation sounds OK ◯ CD playback OK ◯ MD playback OK ◯ Radio reception OK (Stops at receivable stations during seek, so reception is working) ◯ Panel action OK ◯ CD/MD insertion and ejection work without issue ◯ Dial/key operations OK ◯ Display brightness OK [Junk Item] For repair or parts!