Need help troubleshooting an amplifier.

Hi all,

I need help troubleshooting an amplifier. I've tried googling for some answers but come up short. I'm such a novice I don't really know anything about electrical stuff. 

Here's the problem with my amplifier. It turns on, it gets stuck on stage 5 which could potentially mean a power supply issue or one of the Module inside the amp.

I've checked the DC voltage on the speaker terminal. Black terminal registers -0.05. Red cannot get a reading, stays at 0. 

I've contacted the designer but it takes a very long time to get a response so I'm here seeking you guy's expertise while I wait on the designer.

If it's a power supply issue, what does this mean and is it a huge issue to fix? Any other theory on why my amp is having an error?

Thanks all. I'm just super restless and it's been more than a month without music. Some might understand my agony.