Relay disengages one minute after switching on

[jbord39]

Hey guys,

I am using the following circuit to switch on/off another circuit.

The problem is that for some reason the relay will disengage about a minute after it is switched on (although it seems to remain off indefinitely).

Does anyone have any ideas for what could be causing this?

Thanks,

John

 

[Carl Pugh]

100 uF charges to 6 volt.

When switch is pressed, 100 uF discharges to 1.83 volt.