IC11 /12 are in the Power Supply.
They are Voltage Regulators and *look* like 3 leg mid power plastic transistors.
Thet are labelled 7805 and 7905.
And the PCB silkscreen *should* call them IC11 and 12.
Now go find them and measure voltage on each one's leg 3.
Get their datasheets both to see their physical aspect and which one is leg 3.
Please be careful with *how* you write things, you seem to imply the opposite or a very different thing, it's confusing for us.
We may guess what you mean, and guess wrong.
but it doesn't explain why my preamp board is getting power.
I guess you mean: "is not
Or am I missing something?
I tested the power connected to the pre amp board but it's not picking up any voltage.
"the power" ... what?
Power supply or power amp?
And, what does "picking up
any voltage" mean?
You have a power supply
there which supplies
voltage ... or not.
The preamp will "pick up" voltage if it's present, will not if not.
So you must check that those voltages are available.