I have a simple triangle generator circuit soldered and powered by 5V rails shown below. Verified by simulation and equations, it should output a 500kHz triangle wave a \$\pm4.2V\$. Instead, the only thing visible at the output is the power supply noise with additional high frequency noise at the peaks.

[![enter image description here](https://i.stack.imgur.com/x91nM.png)](https://i.stack.imgur.com/x91nM.png)

[![enter image description here](https://i.stack.imgur.com/1ZIlV.jpg)](https://i.stack.imgur.com/1ZIlV.jpg)

It seems like the issue is with the supply rails. The power supply is showing 5V but at the terminals on the board i'm seeing +1.8V for the positive rail and -3.2V for the negative rail. What is the cause of this and how is it possible for this circuit to bring down the supply rails?