I got my hands on this New In box JVC RC-656C boombox about a year ago or so. It had a couple of issues from sitting so long. The tape deck needed some lubrication, tweaking & light maintenance but otherwise fully working. I used my trusty 3000 Hz test tape & got it dialed in just perfect for pitch & head alignment(azimuth). I also replaced the pinch roller because the original hardened completely & now it plays flawlessly & within 0-4hz of 3000Hz reference(2997-3001Hz). The FM tuner had trouble locking into FM stereo so I tweaked the 19KHz carrier adjuster & now, stations come in crystal clear stereo with good selectivity & AFC. The results can be heard in the video below & the pics show that this beauty came with ALL original packaging, manuals, pamphlets etc.
It even has the original box, styro-foam blocks, swabs still sealed in their packaging, the JVC test tape, original bill of sale & cash register receipt.
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It even has the original box, styro-foam blocks, swabs still sealed in their packaging, the JVC test tape, original bill of sale & cash register receipt.

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