popping noise from my speakers

I have a pretty high end VCR that flashes 12:00.

Okay, sorry, couldn't resist.

Please share more detail if you want help. For example, do you hear the popping only from one source component or all? Do you hear it when the volume is down but everything is powered on? Did you change anything in the setup and then it started, but everything was fine beforehand? Cheers,
Spencer

Sounds like your amp needs service. Try disconnecting the preamp from the power amp and run the power amp connected to the speakers only. If popping still happens, you've isolated it to the amplifier.

If it's in both channels, chances are it's in the digital domain of the source, or if you amp is stereo and a common smp power supply for both channels it could be that also.

Cheers George

Any tubes in your system?

all PS audio electronics

Have to be both channel tubes to go faulty at once, highly unlikely. Don’t think PS Audio use common rectifier tubes for both channels, think that stage is all solid state.
The only common thing to both channels is the transformer, I doubt it’s that
https://www.stereophile.com/images/617ps.ins.jpg
https://i.pinimg.com/originals/df/f6/e4/dff6e4d089c2fd09309a560a722e52a6.jpg
Cheers George