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Photo Forum / Film Photography / Medium format / February 2007Mamiya 645 1000s problem
My 645 1000s has started draining batteries. I thought it might be the PD meter but it is still eating batteries with the meter removed. Any ideas?? Check for corrosion between 2 battery contacts that might be bridging the circuit. That would be the only easy possibility. > My 645 1000s has started draining batteries. I thought it might be the PD > meter but it is still eating batteries with the meter removed. > > Any ideas?? > Check for corrosion between 2 battery contacts that might be bridging the > circuit. That would be the only easy possibility. Contacts are clean. I suspect the circuit board may be shot since there is a constant current load..and the battery check light has quit as well as the B shutter speed.. >> Check for corrosion between 2 battery contacts that might be bridging the >> circuit. That would be the only easy possibility. [quoted text clipped - 4 lines] > load..and the battery check light has quit as well as the B shutter > speed.. Could be the release switch also. > Could be the release switch also. I suspected the switch first off and changed out the solenoid. The rest of the release switch is mechanical. I've located a body that is working except the curtains are shot and will remove the circuit assembly and give it a try.. >> Could be the release switch also. > [quoted text clipped - 3 lines] > I've located a body that is working except the curtains are shot and will > remove the circuit assembly and give it a try.. Did you check the battery check switch.? Make sure the lower contact is not pushed against the body casting. >>> Could be the release switch also. >> [quoted text clipped - 8 lines] > > Checked that also. In fact I checked out all of the switches/contacts. I even checked the wiring to make sure none was shorting out.. |
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