0:00 - Intro 0:15 - Schematic 4:26 - Power supply PCB 7:14 - Frequency Response test setup 11:58 - Frequency Response CH A 100W sweep 12:36 - Frequency Response CH B 100W sweep 12:55 - Frequency Response results Additional testing here: rumble.com/v150et8-yamaha-powered-mixer-emx512c-repair-and-test-013.html

A church called me about their Yamaha EMX 312sc that quit working after an electrical storm. Same symptoms, so I studied your video until I was fairly confident that the same thing was happening here. Replaced the same two components and it came back to life! But then I discovered that, although the preamp seems normal, there is no output from the "B" output (monitor side), only the "A" side (mains). So, I'll get back to work and try to figure that one out........unfortunately without a helpful video like yours. Thanks so much for sharing your expertise!

Very thorough. Thanks. I have the same unit but the amplifier section is not working. Hopefully it's something simple

Awesome!

I need you like right now. I have this unit and just figured out where the fuse was checked it and it was blown replaced it still no power. wish I can get it fixed

@JanKowalski-vh1rg

Жыл бұрын

Get fix it (my music teacher have this powermixer and it is real beast)

👏👏👏👏👏👏👏👏👍👍👍👍👍👍👍👍👍👍🇧🇷

Mine works but one of the sliders broke off how would I replace it

@mevmevmev

Жыл бұрын

It is a lot of work for 1 slider. Remove all front panel knobs, remove the front panel PCB from the panel. Desolder the slider. Install new one and reassemble.

Video has no sound?

@mevmevmev

Жыл бұрын

Video has sound. You could try the rumble link to the full video in the description.