(Topic ID: 55346)

Genie has constant loud buzz from start up


By Mayor

5 years ago



Topic Stats

  • 18 posts
  • 5 Pinsiders participating
  • Latest reply 5 years ago by Mayor
  • No one calls this topic a favorite

You

Linked Games

#1 5 years ago

My Genie's lower drop targets were not resetting and after looking at the new ni wumpf driver board I could see one of the transistors was burned/blown. I had a friend put in a new transistor and instead of using the 13n10L he used an IRL530N because the pinball rehab.com site suggested it. The frustrating thing is that the drop targets now work and the game plays fine except for the constant loud buzz from start up and no chimes just a constant buzz. I've ordered a new driver board to try and eliminate that as a culprit but any ideas as to what might be going on and/or suggestions as to what to try. I pulled the j2 connector as I was told that drives the sound board but the buzzing is still there. I'm reading up on system 1's but its a lot of info and I'm quite the newbie on this, still feels like a second language to me.

#2 5 years ago

First question: Where is the buzzing coming from exactly. Speaker, coil, transformer?

#3 5 years ago

Speaker. It's buzzing like a bee.

#4 5 years ago

None of the other sounds from the game are happening either. The constant buzz is all that's happening

#5 5 years ago

Speaker it is.

Now is the buzz that "60 cycle hum"?

#6 5 years ago

Couldn't hear anything on that clip but I did find another 60 htz hum video and yes that certainly appears to be the sound except mine is much louder

#8 5 years ago

Would replacing the speaker help?

#9 5 years ago

I found this on a recent pinside forum, matched my symptoms so I'll give it a whirl, thanks for the help

" I had a Sys1 sound card with a very loud buzzing noise that was caused by the large C6 capacitor on the board. I didn't get any tones at all out of it until I replaced that cap."

#10 5 years ago
Quoted from Mayor:

Would replacing the speaker help?

no.

#11 5 years ago
Quoted from Mayor:

Would replacing the speaker help?

No it would not.

More likely is that you need to recap the sound board and inspect it for bad solder joints.

#12 5 years ago

Are you getting the game sounds along with the Hum or only Hum and no game sounds.?
Replacing all the electrolytic caps on the sound PCB should help.

#13 5 years ago

Only loud hum, no game sounds. Does replacing the caps require soldering? if so it's ask a friend a fovor time again.

#14 5 years ago

Replacing the electrolytic capacitors does indeed require desoldering the old ones and soldering in the new ones.

#15 5 years ago
Quoted from Mayor:

Only loud hum, no game sounds. Does replacing the caps require soldering? if so it's ask a friend a fovor time again.

Your sound PCB may be no good. Do you have a schematic for the sound PCB?
Can you measure the DC voltages on the sound PCB?
Did the sound work when you got the Genie or was it not working?

#16 5 years ago

I just bought a dmm which will arrive soon so I think thats the device to measure voltage on the sound PCB. The sound did work when I got it, then a transistor fried on the driver board and the drop targets stopped working, the transistor was replaced and when the driver board was put back in the buzzing started immediately but the drop targets now work. I've disconnected the sound board for the moment so I can still play and will test and tinker this weekend with the help of some friends and beer and grill items as bribes for assistance.
'

#17 5 years ago
Quoted from Mayor:

I just bought a dmm which will arrive soon so I think thats the device to measure voltage on the sound PCB. The sound did work when I got it, then a transistor fried on the driver board and the drop targets stopped working, the transistor was replaced and when the driver board was put back in the buzzing started immediately but the drop targets now work. I've disconnected the sound board for the moment so I can still play and will test and tinker this weekend with the help of some friends and beer and grill items as bribes for assistance.
'

Best of luck, and keep us posted on your progress!

#18 5 years ago

Problem identified and temporary fix in place. The guy who sold it to me was in the area and stopped by and identified the potentiometer as the issue. When you turn it down their is no buzz. The volume is pretty low and I'll need to get the pot replaced but at least I know what it is now. Thanks for all the help, it's certainly a learning experience

Promoted items from the Pinside Marketplace
Wanted
Machine - Wanted
Senoia, GA
1,175 (OBO)
Machine - For Sale
Lansdale, PA
1,695
Machine - For Sale
Riverside, CA
Wanted
Machine - Wanted
Summerville, SC
€ 8.40
$ 69.95
Cabinet - Shooter Rods
Super Skill Shot Shop
$ 25.00
Gameroom - Decorations
Pinball Photos
From: $ 9.99
Eproms
Matt's Basement Arcade
$ 18.99
Eproms
Matt's Basement Arcade
From: $ 21.95
Apparel - Unisex
Pinball Wheezer
$ 5,599.00
Pinball Machine
Operation Pinball
$ 2.00
Various Other Swag
Project Pinball Charity
$ 25.00
Apparel - Unisex
Project Pinball Charity
$ 149.00
From: $ 99.99
Cabinet - Other
Lighted Pinball Mods
$ 27.99
Eproms
Matt's Basement Arcade
$ 20.00
Playfield - Decals
DevilsMuse Arcade

Hey there! Got a moment?

Great to see you're enjoying Pinside! Did you know Pinside is able to run thanks to donations from our visitors? Please donate to Pinside, support the site and get anext to your username to show for it! Donate to Pinside