PSpice Simulation of a 741 Op-Amp BJT configuration not working

I'm simulating the following circuit of the 741 operational amplifier with BJTs. I've configured my circuit to be a non-inverting fashion, so in theory the gain would be -Rf/Ri. However, no matter what I set my values of Rf and Ri to, my output voltage remains constant. Here is an image of SPICE simulation, with the output voltage boxed in blue, the Rf boxed in green, and the Ri boxed in pink.

Does anybody see what's wrong with my circuit? And why my output voltage is always -4.81 V no matter what the values of Rf and Ri are?

https://stackoverflow.com/questions/66947802/pspice-simulation-of-a-741-op-amp-bjt-configuration-not-working April 05, 2021 at 11:07AM