(Topic ID: 198736)
Linked Games
Last Action Hero
Data East, 1993-
Star Wars
Data East, 1992
Topic Gallery
Newbury
Berea, OH
The EMI filter is to remove incoming interference noise from the mains supply. That would be noise such as fan motors, florescent lighting, etc...things outside of the game. It doubt it would help any noise generated inside the game to bypass it, but it's easy enough to try. I would have experimented, but mine are too quiet
Just in case you didn't know. There's a whole thread on ideas and solutions
https://pinside.com/pinball/forum/topic/data-east-speaker-noise-ideas-for-a-cure
Quoted from alistaircg:An old technician told me that if I remove the EMI Filter from where the power goes into the Data East machine it stops the hum feedback so common on these machines.
Your opinions please ?
what does the EMI Filter even do ?
No -- this is not the source of noise. Its job is to actually remove electrical noise. Just not the noise you are trying to remove.
The power EMI filter's sole function in life is to get the pinball machine through FCC testing. Period.
To get electrical noise (solenoids, etc) from feeding back to power mains - this is added to block electrical noise from getting back into main power (which will cause FCC to fail your device). Side benefit, though, is that it equally blocks electrical noise from the main power from entering the machine as well.
They had to go through similar conducted and radiated EMI testing to get approval for various European countries as well.
Quoted from ypurchn:Just in case you didn't know. There's a whole thread on ideas and solutions
https://pinside.com/pinball/forum/topic/data-east-speaker-noise-ideas-for-a-cure
yep, been there, read everything, tried everything, thanks though for the thought.
The new rottendog board made it worse
Promoted items from Pinside Marketplace and Pinside Shops!
Reply
Wanna join the discussion? Please sign in to reply to this topic.
Hey there! Welcome to Pinside!
Donate to PinsideGreat to see you're enjoying Pinside! Did you know Pinside is able to run without any 3rd-party banners or ads, thanks to the support from our visitors? Please consider a donation to Pinside and get anext to your username to show for it! Or better yet, subscribe to Pinside+!
