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Main => Main Forum => Topic started by: bowza on March 17, 2005, 09:02:25 am

Title: Correct jamma psu voltages
Post by: bowza on March 17, 2005, 09:02:25 am

Cant seam to bring anything up in a search so ill ask

What are the correct voltage ranges for the 5 12 and -5 outputs of a jamma PSU

Mine reads 4.9v 11.8 and -5.07

Thanks

Bowza

Title: Re: Correct jamma psu voltages
Post by: cholin on March 17, 2005, 10:46:09 am

They seem fine.  As long as theyre really close to their voltages, its fine.  Are you having problems with it?

Title: Re: Correct jamma psu voltages
Post by: bowza on March 17, 2005, 12:07:33 pm

I have a system 11 board soul edge that graphics smudge , thought it may be voltage related as a taito Cartridge board works fine, also a standard jamma board works ok.

Thought the system 11 may be less low voltage tolerant

Thanks

Dave

Title: Re: Correct jamma psu voltages
Post by: RayB on March 17, 2005, 01:38:20 pm

graphics SMUDGE? What does that mean exactly?
Sounds more like a monitor problem.

Title: Re: Correct jamma psu voltages
Post by: bowza on March 17, 2005, 04:50:09 pm

fixed


Replaced psu with one borrwed from the guy I bought the monitor from , now a nice crystal picture, so off to find a nwe psu next.

Cheers all

Title: Re: Correct jamma psu voltages
Post by: paigeoliver on March 18, 2005, 08:53:25 am

Isn't your power supply adjustable? If so then you can just dial the voltage up to the correct 5.1 volts.

Some boards eat more juice than others and will require you to adjust the PSU anyway. I have one board that eats so much juice that my Candy cab can't even get the board up past 4.6 volts (but the new power supply in my Multi-Williams can be dialed up high enough to run it). I can't remember the name of the game at the moment, but it is an old Konami pinout game where you play a round tank, joystick, rotate right, rotate left, and fire

EDIT- Just remembered the name. Strategy-X