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Strange noise in Syncrowave 200

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  • ttype
    started a topic Strange noise in Syncrowave 200

    Strange noise in Syncrowave 200

    Can anyone with a sync 200 try this & see if the welder makes a hissing noise.

    Set welder for about 100 amps, press peddle fully & see if machine makes a hissing noise ?

    Was trying to find reason for porosity all of a sudden.

    Was adjusting gas flow & noticed this hissing noise, thought may be a leaking hose, so took side cover off.
    Hose is fine, noise that sounds like a leak is coming from the center area of machine.

    This may be a normal noise , but just was not noticed before.

    Welder worked fine a couple days before, now all welds are full of porosity.
    Still have 500psi of gas ?

    Just dont know what problem is.

  • dupalex32
    replied
    Originally posted by ttype View Post
    The weld puddle pops & bubbles during the weld, so post flow shouldnt be the problem
    Hey ttype,

    I know this thread was started a very long time ago, but have you ever found your problem? I have the exact same thing that just happened to me... very frustrating... Thanks, hope this message finds you

    Leave a comment:


  • SignWave
    replied
    the hissing that you hear is the spark gap on the other side of the machine.
    this is normal. its not a gas leak. I thought the same too until i did some exploring. Uncanny how an arc can sound like a gas leak....

    Leave a comment:


  • monte55
    replied
    I have a Syncro 200 and every sound it makes is new to me.......never have tigged before. But..........when I lay down a good bead........all those sounds
    become wonderful.........THANKS Miller for the sounds. Some new guys ask on what their speed should be........not being an expert, I can relate it to running a caulking bead............don't move untill the desired amount of material is deposited. If you can move while applying in a smooth fluid movement,.....great. Just pulling a trigger does not make magic..........control makes magic. Look a KB FAB's and others welds and I'm sure they don't close
    their eyes, pull the trigger and hollar sh1tt, and hope the weld comes out OK.
    Sorry to have rattled on..............Nick




    PS not really!

    Leave a comment:


  • Bert
    replied
    Phila and Ace,
    thanks

    Leave a comment:


  • jwsrep
    replied
    Heres another vote for high frequency noise. Nothing to worry about unless you are a computer or a phone line.

    Leave a comment:


  • ace4059
    replied
    Originally posted by ttype View Post
    Forgot to mention, hissing noise is when not striking an arc.
    Originally posted by ttype View Post
    phila.renewal has the correct answer !

    Ran into a Miller warrenty guy by accident, & was informed the hissing noise is the high frequency trying to start the arc.
    I think I under stand what you are saying. You stomp the foot feet to strike an arc but it doesnt strike, instead makes a hissing noise. You can also hold the torch in the air and it will make the same noise when you push down on the pedal (your neighboors will love you for that). That would be the HF. It will also make a noise kinda like that in AC, because the HF is on all the time in AC. The HF start the arc in DC then shuts off.

    Leave a comment:


  • phila.renewal
    replied
    Originally posted by Bert View Post
    Any guys with Sync 200's that can answer this?
    Check posts 9 and 10.

    Leave a comment:


  • Bert
    replied
    Any guys with Sync 200's that can answer this?

    Leave a comment:


  • Archaic
    replied
    Thanks!

    Well I am just really glad to have happened onto this thread. My month old Syncrowave 200 has been making the same sound and driving me nuts. I was sure that I had a gas leak, but how was that possible with the cylinder valve fully closed? Who would have thought that the points could make a sound that perfectly mimics a gas leak! Glad that I did not tear a new machine into a thousand pieces looking for a gas leak.

    Leave a comment:


  • ttype
    replied
    phila.renewal has the correct answer !

    Ran into a Miller warrenty guy by accident, & was informed the hissing noise is the high frequency trying to start the arc.

    Leave a comment:


  • phila.renewal
    replied
    Are you sure it's not just the high frequency at the points?

    My syncro 200 makes that noise when it's trying to start an arc. It's normal.

    Leave a comment:


  • Bert
    replied
    Found out your problem yet? Lot of new people buying or thinking of buying same machine. Would help if you fixed it in case they have the same problem...

    Leave a comment:


  • ttype
    replied
    Forgot to mention, hissing noise is when not striking an arc.
    Found noise while adjusting gas flow, not welding.

    Have side cover off & selinoid is not causing the noise, hissing is coming from center of machine.
    Even with gas flow cranked up , the only gas flow noise heard is at the torch.

    So if anyone trys this & hears a flow type hissing inside the machine this sound must be normal.


    BTW The gas has a very straight path in this machine
    In at seliniod at back, straight to torch fitting at front.
    Only sound made by gas system is a click at selinoid.

    Leave a comment:


  • fun4now
    replied
    high flow rate = loud solenoid

    whats the flow rate set at??? are you using a gas lens ?too high of a flow can cause turbulence and suck in oxygen that will cscrew up the weld fast.
    500 psi is getting purity low for argon, what size tank are you using??
    other possible causes of gas contamination.
    is the valve on the tank is all the way open?? it must be tightly sealed all the way open, the argon tanks only seal if all the way open or all the way closed.
    the back cap is lose on the torch.
    the cup/seal are not seated properly.
    the gas line's connections are not all tight.start off with a spray bottle of win-dex or orange clean . spray down all connections, even the top of the tank valve handel( i had a leak there once). if nothing bubbles its not a leak causing the problem in the weld.
    also do not use PVC tape in any of the connections, they are presher fittings. tape is a no no!!

    any of the above could cause the bad welds.

    as for the noise ?? could just be normal solenoid flow noises, higher flow rates will make it louder and like said above you will generally not here it wile welding as you are buisy dealing with the weld.

    good luck, be shore to let us know how it all comes out.

    Leave a comment:

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