Originally Posted by dsmccrac
Kk guys I will try to give a OM-4 some love when a semi affordable one is available. So a 4 (no T) is OK on batteries if it is late model? What is 'late' ?
Switch the battery check on, if it stops buzzing after 30 seconds it is a late model circuit and you are good to go. My OM4 is great on batteries with this circuit.