Dervacumen
New member
NBA Hangtime power (I think) troubleshooting advice
Long time abuser, short time active member.
I picked up an NBA Hangtime cab that has what I think is a power problem. When you plug it in everything seems to go live immediately. Or that is to say the marquee lights up and I can hear power to the CRT. The power indicator on the board lights up. When I press the switch on the top of the cabinet, it doesn't change state for about 15 seconds, then the screen flashes and I hear loud audio of the game - so I guess it's gone through the self test - but it last only about .5 seconds. Then the machine cycles again.
My guess is a power supply problem, and when checked it shows a good 5V but the 12V line is around 10V. I tried to adjust the power via the adjustment on the PS but every time I turn it, it my meter gets nuts and eventually stops reading. Maybe I'm shorting it through the adjustment screw?
What should I check for - does this sound like a Power Supply problem, and if so, I do have the schematics (Peter Chou USP-11-150x) but would really like to learn where to start with this one.
This was a nice deal for $50. The machine is exceptionally clean except the side art so I'd like to get it rolling.
Thanks for any ideas, I' looking forward to getting it up and going.
Derv
Long time abuser, short time active member.
I picked up an NBA Hangtime cab that has what I think is a power problem. When you plug it in everything seems to go live immediately. Or that is to say the marquee lights up and I can hear power to the CRT. The power indicator on the board lights up. When I press the switch on the top of the cabinet, it doesn't change state for about 15 seconds, then the screen flashes and I hear loud audio of the game - so I guess it's gone through the self test - but it last only about .5 seconds. Then the machine cycles again.
My guess is a power supply problem, and when checked it shows a good 5V but the 12V line is around 10V. I tried to adjust the power via the adjustment on the PS but every time I turn it, it my meter gets nuts and eventually stops reading. Maybe I'm shorting it through the adjustment screw?
What should I check for - does this sound like a Power Supply problem, and if so, I do have the schematics (Peter Chou USP-11-150x) but would really like to learn where to start with this one.
This was a nice deal for $50. The machine is exceptionally clean except the side art so I'd like to get it rolling.
Thanks for any ideas, I' looking forward to getting it up and going.
Derv