Teac A-2300SX A-3300SX phone amp pcb 51676650 Very easy to change this

Very easy to change this board as all connections are made by molex plugs so no soldering is required

used in the Tascam M-15xxxx series

These I would guess are the same as the 22-2 and many others but have listed them like this as easier to find

I have left the big heatsink bar on so you just need unscrew 4 screws take your older  unit out and put this in no soldering required as

now I also have one beginning with 5210xxxxx which looks right but they seem the same

Teac A-2300SX A-3300SX phone amp pcb 51676650 Very easy to change thisI have seen some different boards used in these machines as Teac produced the 2300SX and 3300SX for many years.