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Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: andyjah on May 07, 2015, 06:07:22 PM

Title: SX-M2 static in right channel issue
Post by: andyjah on May 07, 2015, 06:07:22 PM
So a friend loaned me a sxm2 that was sitting for awhile. It turns on and runs phantom power but there is static when you adjust the right channel. I used compressed air and blew around the gain pots out. Any other suggestions on what to do to remedy this? I hate to send it back to his closet again.
Title: Re: SX-M2 static in right channel issue
Post by: schoepsnbox on May 07, 2015, 06:28:08 PM
Try using Deoxit D5  its available at radio shack and works great for cleaning dirty pots..you could spray some and work the pots from top to bottom several times.
it will work best if you remove the knobs first.
Title: Re: SX-M2 static in right channel issue
Post by: andyjah on May 07, 2015, 09:00:11 PM
Thank you I will give it a shot.
Title: Re: SX-M2 static in right channel issue
Post by: noahbickart on May 07, 2015, 09:17:34 PM
Andy:

you might want to try Jerry Bruck's favorite product:

http://www.posthorn.com/Stab_2.html
Title: Re: SX-M2 static in right channel issue
Post by: carlbeck on May 08, 2015, 08:05:59 AM
Try using Deoxit D5  its available at radio shack and works great for cleaning dirty pots..you could spray some and work the pots from top to bottom several times.
it will work best if you remove the knobs first.

Andy, I was going to suggest the same thing, I actually have some sitting around somewhere & could bring it next time I see you. Sure would be a shame to let that Sax go back in the closet, unless of course it's MY closet  ;D
Title: Re: SX-M2 static in right channel issue
Post by: DSatz on May 09, 2015, 01:53:31 PM
I hope you can fix this problem, but it is characteristic of the SX-M2 in my experience. I soon learned not to make any level adjustments while actively recording with it.

Can someone with a schematic say whether or not any direct current is passing through the pots?
Title: Re: SX-M2 static in right channel issue
Post by: morst on May 10, 2015, 02:44:17 AM
Deoxit is the classic chemical solution. Try not to breathe it.

Exercise all knobs thoroughly. Twist them back and forth. Move the switches through their range 100x each. Gently but firmly.

Once you've gone through it once, hook up inputs and outputs, and AT LOW VOLUME, run those faders up and down. Clean yet? With most dirty level knobs, you can find the chunks of trouble and work them out with extra elbow grease. GENTLY but repetitively! Several hundred scrubs is not unusual to fully clean a chunk off of there.

If you can't get it to adjust cleanly, then do like Dsatz, and get it set, and leave it alone.

Even if you get it clean enough to run, check it before you take it out next time. It's very possible that the dirt in the faders creeps right back in as soon as you turn around.
Title: Re: SX-M2 static in right channel issue
Post by: andyjah on May 12, 2015, 03:47:59 PM
So the d5 cleaner worked. Ill still keep working the knobs on the faders and check it before i run it at a show. Thanks for all the tips.
Title: Re: SX-M2 static in right channel issue
Post by: jbell on May 12, 2015, 04:43:36 PM
Good to know

So the d5 cleaner worked. Ill still keep working the knobs on the faders and check it before i run it at a show. Thanks for all the tips.