Yammie preamp question

phoneisbusyphoneisbusy Posts: 875
edited December 2003 in 2 Channel Audio
Just had a quick question to the forum. I've noticed a bit of static when I adjust the volume on the preamp. Is this normal or do I need to clean the pot in the preamp? Is it terribly difficult?

Thanks

Dave
Time is the best teacher. Unfortunately it kills all its students.
Post edited by phoneisbusy on

Comments

  • JstasJstas Posts: 13,820
    edited December 2003
    Canned air will usually clean it out pretty good. Just be careful cleaning it 'cause they can get fairly hot if the unit has been on for a while. If the canned air doesn't work, usually some electrical contact cleaner will do the trick too. You can get both at most office supply stores or Radio Shack.

    Also, if you have an anti-static bruch like you would use for vinyl LP's, they are good for cleaning electrical contacts too. It may be worth it just to pick up a brush for stuff like that.
    You're just jealous 'cause the voices don't talk to you!
  • organorgan Posts: 5,022
    edited December 2003
    If the problem still persists, replacing the pot should be easy. Just make sure you replace it with a of the same value.

    Maurice
    CD Player: Original CD-A8T
    Receiver: Harman/Kardon HK3390
    Speakers: Polk Audio RT1000p
    "I would rather have a cup of tone than an ocean of power" **Dr. Harvey Rosenberg**
  • madmaxmadmax Posts: 12,438
    edited December 2003
    Many times this problem will show up when the air is really dry and then go away once the humidity is back up to normal.
    madmax
    Vinyl, the final frontier...

    Avantgarde horns, 300b tubes, thats the kinda crap I want... :D
  • DarqueKnightDarqueKnight Posts: 6,602
    edited December 2003
    Originally posted by phoneisbusy
    Just had a quick question to the forum. I've noticed a bit of static when I adjust the volume on the preamp. Is this normal or do I need to clean the pot in the preamp? Is it terribly difficult?

    Thanks

    Dave

    Dave,

    What model is your preamp? Some of the older Yamaha preamps used pots that were in a sealed plastic case that you couldn't clean.
    "So hot it burns Mice!"~DK
    "Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
    "Knowledge, without understanding, is a path to failure."~DK
    "Those who irrationally rail against something or someone that is no threat to them, actually desire (or desire to be like) the thing or person they are railing against."~DK
  • WardswebWardsweb Posts: 817
    edited December 2003
    I've cleaned/repaired my share of vintage audio over the years and the best I've found for the job has been Deoxite (Part Number 341-200) for really dirty pots and tuners gangs. I follow it up with some ProGold (Part Number 341-225) . If it's not real dirty then just the ProGold. You can get this stuff from Parts Express.
    Living room:Maplenoll turntable, Clearaudio Champion II turntable, Sonic Euphoria pre, EAR 834P phono pre, Shanling CD-T1500 sacd, Auralic Altair DAC/server, PS Audio Quintessence power, ASL AQ1006 845 DT MKII mono block amplifers, DIY Altec/JBL speakers
    Sun room: Roksan Radius 5 turntable, Lounge phono pre, DIY Class A 6H30 linestage, DIY 2A3 amp, Krell CDP, JBL C50 Olympus speakers with custom Smith horns, Klipsch Cornwall III
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  • JstasJstas Posts: 13,820
    edited December 2003
    Originally posted by madmax
    Many times this problem will show up when the air is really dry and then go away once the humidity is back up to normal.
    madmax

    It's a very common complaint in the winter time because heaters tend to dry out the air. When the air dries out, you get more airborne particles because there is not moisture or humidity holding them down anymore. They get stuck to things with an electric charge...like potentiometers.

    Once you get the problem fixed, regular dusting of equipment will help keep this problem to a minimum. Fix it soon too because excessive dust and grime build-up will eventually kill a potentiometer.
    You're just jealous 'cause the voices don't talk to you!
  • phoneisbusyphoneisbusy Posts: 875
    edited December 2003
    Thanks for all the suggestions.
    The Preamp is the yamaha C-40.

    Looks like I'll be opening it up and taking a peek inside.
    Maybe pick up some cleaning supplies.

    regards

    Dave
    Time is the best teacher. Unfortunately it kills all its students.
  • DarqueKnightDarqueKnight Posts: 6,602
    edited December 2003
    Phone,

    I have a Yamaha C-80 pre that developed a scratchy volume/balance pot after a few years. I had to replace the pot since it was in a sealed plastic casing. It wasnt dirty, it was just worn out.

    I am not familiar with the internal parts of the C-40. You can call Yamaha parts in Buena Park, CA (714) 522-9888 and ask to speak to technician Jim Bennet. Jim has been around for over 25 years and is very familiar with the older Yamaha gear.
    "So hot it burns Mice!"~DK
    "Polk SDA-SRSs are hopelessly out of date both sonically and technologically... I see no value whatsoever in older SDA speakers."~Audio Asylum Member
    "Knowledge, without understanding, is a path to failure."~DK
    "Those who irrationally rail against something or someone that is no threat to them, actually desire (or desire to be like) the thing or person they are railing against."~DK
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