emulatorII-list

Can anyone help  with a psu fault or have you experienced the same 
fault?

The psu in my eII is hicupping,
All the voltages are present on the outputs except for the 12 volt 
rail which is shorting to groud via the SCR turning on, therefore 
causing the PSU  to hicup.
I have replaced the scr and zener diode connected to it.
I have changed all elect caps in the secondary and primary circuits.
I have checked all resistors on the board and they are in tolerance.
Diodes and transistors seems fine?


Adjusting the 5v rail pot on the secondary does not change the 5v 
output voltage but it changes the speed of the hicupping that is heard?

By removing the scr out of the circuit on the 12v rail, this allows 
all voltages to be up and now stable, but the voltages seems too high 
in the secondary, the  5v rail goes up to 8 volts and the input side 
of the regulators on the -15 and 13.4 volt rail are at about -27 and 
+27 volts.


Can anyone help
thanks