Loud sound makes distortions

Arcade cabinet hardware and accessories
Post Reply
charles76
Posts: 4
Joined: February 12th, 2020, 8:15 am
Location: Sweden
eBay: alex-1692
Initials: aek

Loud sound makes distortions

Post by charles76 » February 12th, 2020, 11:44 am

Just bought an arcade, it works excellent but got one small issue that I’m looking to get help with… Whenever I crank up the volume the picture gets lightly distorted, the arcade monitor makes horizontal lines thats appears in sync with loud noises and pulses, mostly significant with bass sound. Turning down the sound makes them disappear. Any suggestions how to fix? It’s a generic arcade with Jamma and neo geo one slot.

User avatar
nem
Posts: 1653
Joined: August 17th, 2008, 6:59 pm
Location: Finland

Re: Loud sound makes distortions

Post by nem » February 12th, 2020, 12:38 pm

Grounding issue or interference perhaps?

Do you have continuity between all grounds (common ground, video ground, audio ground)? Personally, I follow the jamma spec and keep all three separate.

Are your speaker cables running beside the video wiring? You could try physically separating them.

Post Reply