Can't power wired doorbell, chime bypass problem?


I am having some difficulty in powering my wired doorbell.

My property has two buttons, a Friedland 753 8V Bell Transformer and a Byron 771 chime. I have attempted to bypass the chime as per the setup instructions to no avail. I am wondering if the other push button is the problem or do I need to separate the wires. I have attached a photo of the current chime wiring. After bypassing two of the connections, should the other remain in place?