Issues with Studiomaster mixer
Issues with Studiomaster mixer
Hi
I've got an old Studiomaster Mixdown Gold 16-8-2 mixer. It has a couple issues I'd like to sort out.
1.) There is an intermittent humming in the main channel outputs. It comes and goes but it isn't present in any of direct outputs or bus sends.
2.) There is a quite loud buzzing sound coming from the transformer.
I'm not sure if these issues are related. Any tips to solve these problems?
I've got an old Studiomaster Mixdown Gold 16-8-2 mixer. It has a couple issues I'd like to sort out.
1.) There is an intermittent humming in the main channel outputs. It comes and goes but it isn't present in any of direct outputs or bus sends.
2.) There is a quite loud buzzing sound coming from the transformer.
I'm not sure if these issues are related. Any tips to solve these problems?
- winky dinglehoffer
- buyin' a studio
- Posts: 813
- Joined: Wed May 07, 2003 12:08 pm
- Location: ATL
Re: Issues with Studiomaster mixer
Transformer hum is often due to laminations in the transformer getting loose & vibrating against each other. A replacement transformer would be the easy solution--if you can find something appropriate.
- Scodiddly
- genitals didn't survive the freeze
- Posts: 3975
- Joined: Wed Dec 10, 2003 6:38 am
- Location: Mundelein, IL, USA
- Contact:
Re: Issues with Studiomaster mixer
Sometimes it's the power supply rectifier(s) that are going bad, shorting some extra current and causing the power transformer to work harder.
Re: Issues with Studiomaster mixer
I think a new transformer would be a good start.
I've noticed the noise in the main channel out's only comes on after the mixer has been running for a while. Maybe heat related?
I've noticed the noise in the main channel out's only comes on after the mixer has been running for a while. Maybe heat related?
- Nick Sevilla
- on a wing and a prayer
- Posts: 5571
- Joined: Mon Mar 03, 2008 1:34 pm
- Location: Lake Arrowhead California USA
- Contact:
Re: Issues with Studiomaster mixer
Most likely bad capacitors in the power supply. They are not quite yet failing, but they are announcing their impending doom.
Howling at the neighbors. Hoping they have more mic cables.
- Scodiddly
- genitals didn't survive the freeze
- Posts: 3975
- Joined: Wed Dec 10, 2003 6:38 am
- Location: Mundelein, IL, USA
- Contact:
Re: Issues with Studiomaster mixer
I'd really recommend going with rectifiers and caps - they are cheap and almost certainly the source of your problem.
And if it still persists, I'd bet something further along is pulling too much power and causing the transformer to hum.
Re: Issues with Studiomaster mixer
Ok thanks for the advice guys. Caps and reg's would be cheaper and easier to source.
Re: Issues with Studiomaster mixer
Intermittent hum may also point to physical connections. If it’s full of any sort of Molex or ribbon connections, I’d exercise those to clean the contacts.
Doug Williams
ElectroMagnetic Radiation Recorders
Tape Op issue 73
ElectroMagnetic Radiation Recorders
Tape Op issue 73