TASCAM 688 52102847-02 MONITOR D PCB the opto coupler is hard

the opto coupler is hard to find now and modern ones have a different pinout

Tascam bearing from a Tascam 244 246 but may have been common in other machines at this time quite rare now 30

these are a little bigger than the normal half inch pinch wheels though i think replacement tyres maybe ok

this panel includes the channel panels covers

TASCAM 688 52102847-02 MONITOR D PCB the opto coupler is hardBoard from a 688 and maybe common in some others The 688 was really the flagship analogue portastudio amazing what the could get on 1 8 inch tape I was amazed how heavy and how big the machine was must be 15 kilos maybe, Nearly all the boards inside are with connectors so its one that can be serviced easier