hifi engine

Manual for Sony Reel to Reel TC 580

was told pages 35 and 36 held the keys to my issue: player will not play side one, wants to switch to side two. When it does play side one momentarily, the sound will cut in and out.

If the forward button is depressed, it will play side one and the sound will not cut out, but standing holding button isn't my favorite listening position.