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Re: has developed a hum or line noise i can't get rid of,
Hello, so the gear you have ain't the problem.
Have moved gear and especially ledlight dimmers(in your whole house). These days with saving lights with Dimmers. Did you started using a light dimmer? are all terrible for ground noise. Tv's.. terrible.
What i'd like you to do is put all you stuff off in whole your house and only use your sound gear, which didn't gave a problem and check if it still humms and stuff, and do you have a good desktop psu, costing min 150 euro, so no oem psu, which most are, only peopes don't know that. Pls try this and return if you have. noticed a difference. gr. Richard
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Make sure that you've fully pushed in the jack to the sound card.....maybe you've not connected the jack into the correct socket on your soundcard as there are usually 3 identical sockets...but only 1 is the correct one. Sometimes colour-coded green. Try it in each one in turn. If you have headphones, try plugging them in as you will hear sound in them when you've got the correct socket!
If you turn the power off and it's still there then it's not anything electrical in the flat.. it could be transferred noise from another source. I would try locating the sound by listening through a tube to locate the sound more accurately. This method of sound source location is used by old fashioned mechanics listening for engine noises and is very good at finding them..
good luck !
Make sure ALL of the interconnected equipment is powered from the SAME receptacle to avoid ground loops due to the safety ground. DO NOT Use two wire power or use ground lifting plug adapters. Make sure you use balanced lines, either XLR or TRS cables. Do NOT use TS cables.
If you feel that humming noise then it's definitely a worn out wheel bearing. It is connected on the wheel hub. You will need to remove the CV (constant velocity) joint to gain access to the wheel bearing. Have it replaced to get rid of the humming noise.
Hope this helps and thank you for using FixYa! Have a good one!
My first thoughts are to replace the large electrolytic capacitor(s) their will be at least two I think, as they could be getting leaky. Though they could be fully charged up on switch on (hence no noise) they could lose it as time passes and let the 50/60 Hz mains hum in (which they stop). Another cause could be a semi-conductor that has become heat sensitive. This again could be in the power supply or something that has both channels running in and out of it. This is because the noise is in both channels, so can't be something that deals with only one channel, even if there are two of them!
Replace the caps first, if that doesn't solve your problem, then get some Servisol Freezer spray and spray any suspect part (one at a time) when it acts up! If the noise goes you have the culprit.
If everything is working as it should - the problem may be with the motor. Either the starter is starting to fail, or it may have gotten wet. Check for leaks around the base, and be prepared to eventually replace the motor. If you can deal with the humming, there is no reason to replace it at this time, and there is nothing you can do to quiet the noise.
Very likely pump motor shaft seal leaks water into bearing casing buildup of rust and consequently noise. I just replaced $112 worth of pump assy and it's back to normal. I would also buy repair manual for $10 on-line to be sure how to disassemble the sump to get to the pump.
your model is pretty new. just so you know your warrenty is 1 year parts and labor. 2 years on parts. it should not cost that much money.
there are two components that start before the circulation pump.(wash noise you hear)
first sounds you hear will be the drain pump. usually rattling noises if something is in it but it can make a hum noise if something is jamming the drain propeller up. which is accessible with a T20 torx driver. take the filters out and the mesh filter. and unscrew the screw in the base towards the left. pull out whatever is lodged.
the other humming sound can come from the next component that activates is the watervalve. make sure you dont have a kinked water intake line. otherwise its a bad valve. i have had to change a few of those water valves out already but not for a hum noise on your model. you have a new style water valve. when brands make new parts we get problems fast sometimes..