I design Multi output Fly-back SMPS input +110v ac and output +5 -5. +5V dc of this circuit has feedback and output capacitor is 1000uF. This positive part works well but when I get current from +5V dc the negative part go beyond to -15V and when I get current from -5V this voltage drop to -1V. I use dummy 50ohm load that get current from positive part while I get current from -5 negative part it helps that the voltage decrease to -2.5 voltage in comparison to-1v mentioned voltage. HELP to fix it.
Thanks for your help.