Hi Folks,
I am a newbie to electronics please take it easy on me since I believe these questions must be dumb to some.
I have an old Fadal probe controller board. basically, it switches Renishaw probes for the CNC machine from the table to the spindle when called by the control. This is an old board that no longer is made circa 1987, hence it needs to be repaired.
I took a look at the board the 35v 3300uF capacitor was popped so I was hoping by changing it the board would live again but no it popped once more
I removed it and took some readings from the power transformer (PC-16-1500, Single 115 V 6 Pin ) per the datasheet the size is 24VA, in series 16 VCT @ 1.50 A and parallel 8 V @ 3.0 A. I measure the input to the transformer correctly at 115v however on the output coil 1 and 2 were each at 10v and in series at 20.5. The power at the capacitor was 38.6v.
I am looking at the obvious the transformer is not putting the right voltage out, am I correct? Or there is a certain level of error that is acceptable? Or perhaps there is a component that is regulating the power that is not working right.
38.6v for a capacitor rated at 35v is past its design?
Is there somewhere else on the board I should be looking at?
I know, I know these are obvious questions but then again I am no specialist in electronics, hoping to hear from people that know much more than me. Thank you very much in advance!
I am a newbie to electronics please take it easy on me since I believe these questions must be dumb to some.
I have an old Fadal probe controller board. basically, it switches Renishaw probes for the CNC machine from the table to the spindle when called by the control. This is an old board that no longer is made circa 1987, hence it needs to be repaired.
I took a look at the board the 35v 3300uF capacitor was popped so I was hoping by changing it the board would live again but no it popped once more
I removed it and took some readings from the power transformer (PC-16-1500, Single 115 V 6 Pin ) per the datasheet the size is 24VA, in series 16 VCT @ 1.50 A and parallel 8 V @ 3.0 A. I measure the input to the transformer correctly at 115v however on the output coil 1 and 2 were each at 10v and in series at 20.5. The power at the capacitor was 38.6v.
I am looking at the obvious the transformer is not putting the right voltage out, am I correct? Or there is a certain level of error that is acceptable? Or perhaps there is a component that is regulating the power that is not working right.
38.6v for a capacitor rated at 35v is past its design?
Is there somewhere else on the board I should be looking at?
I know, I know these are obvious questions but then again I am no specialist in electronics, hoping to hear from people that know much more than me. Thank you very much in advance!