Pacman/Galaga cabaret screen not working

[jeelani]

I have a Pacman/Galaga cabaret but it looks like it is actually a converted from a centipede machine.  When I turn the machine on, everything powers up and I hear the screen but nothing displays.  This has happened once before but after a few weeks of not using it, I turned it on and the was screen working again.  The other day my screen went out again.  Is my CRT going bad or could it be a connection issue?  I really haven't touched the wires inside the cab because I do not know what safety precautions to take and what wires I should avoid touching so I could really use some guidance on which connections to check.  Thanks in advance.

Inside the cab:

[jeelani]

Can someone please help me?

[qrz]

helpful to know what you have .
cabinet original, replacement - make/model

crt filaments lit ( neck glow) , hear the vertical output operating , etc...?