Teac head set model unknown rec play erase 53786011 50664600 I have found some variations

I have found some variations of this board with less components or missing an opto unit

Used in the D4000 if no stock here it may have moved to ebay

From the original data I have

Nice clean motor from a 250

Teac head set model unknown rec play erase 53786011 50664600 I have found some variationsA set of heads , but I do not know from which machine, they have not been lapped as that would make them too expensive, though I can get them done if needed. no head gaps visible. These were interesting as they used a 4 track head in a two track unit using just tracks 3 4, never seen that before. May have been used in other units around this time