Build Your Own Arcade Controls Forum

Main => Main Forum => Topic started by: greven grevs on February 24, 2004, 02:37:35 am

Title: Loud humming from speakers
Post by: greven grevs on February 24, 2004, 02:37:35 am

Hello all , I picked up an F-1 Super Battle machine and after some messing around I was able to get it up and running. Thing is , whenever I turn it on I get alot of interference from the speakers. Whenever I touch the knob [which is metal] the interference gets worse. Any ideas on how to get it to stop?

ps - anyone have any information on this game? Its made by Jaleco. The machine is nice , the rumble still works for the wheel  ;D

Title: Re:Loud humming from speakers
Post by: Edgedamage on February 24, 2004, 10:04:31 am

Check your grounds.

Title: Re:Loud humming from speakers
Post by: Ken Layton on February 24, 2004, 10:21:27 am

Check or change the power supply too.

Title: Re:Loud humming from speakers
Post by: fredster on February 24, 2004, 11:25:34 am

If it always has done that you may have a cap out on the PCB.  The board maybe needs servicing.  

If you have another PCB, try it.  If it works okay, then your cab is okay.

Title: Re:Loud humming from speakers
Post by: greven grevs on February 24, 2004, 12:45:36 pm

Thanks guys for the replies. I will check the grounds tonight [i hope]. As for the power supply , I am not sure what to look for. It powers  up so the power supply works , do you think it may me going out?
Fredster - I dont know if its always made the noise , I emailed the guy I got it from and he hasnt responded.

Title: Re:Loud humming from speakers
Post by: Edgedamage on February 24, 2004, 01:05:54 pm

Also check to see if the AC filter is still in place.