WTF i found my loudest source of noise: my monitor!!!
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WTF i found my loudest source of noise: my monitor!!!
for the past few days i've been trying to get rid of this soft whine i thought was comming from my case. damn, and i just found out that it is actually comming from my nec multisync 950+ 19inch crt monitor! CRAP i wasted so much time trying to tweak my comp like making a hdd suspension etc etc.
so how do i get rid of this? its a whine/buzz comming from inside the monitor. i've tried replugging the power cords, but to no avail. I think it might've gotten louder when i was playing games just now...
so how do i get rid of this? its a whine/buzz comming from inside the monitor. i've tried replugging the power cords, but to no avail. I think it might've gotten louder when i was playing games just now...
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I have a number of CRT monitors which can make unacceptable irritating high pitched whine noises. I have found that reducing the refresh rate and/or resolution and/or using interlacing can sometimes eliminate the whine.
Experiment with a resolution of 640x480 and reduce the refresh rate to 60hz. If that eliminates the whine, then experiment with bumping up the resolution and/or refresh rate.
For my main workstation's 21" CRT monitor, I have found the ideal compromise between high resolution, reduced flicker, and eliminating coil whine is 2048x1536 interlaced at 85hz. It looks awesome and keeps the monitor silent!
Experiment with a resolution of 640x480 and reduce the refresh rate to 60hz. If that eliminates the whine, then experiment with bumping up the resolution and/or refresh rate.
For my main workstation's 21" CRT monitor, I have found the ideal compromise between high resolution, reduced flicker, and eliminating coil whine is 2048x1536 interlaced at 85hz. It looks awesome and keeps the monitor silent!
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By the time everything is so quiet and you silence your heartbeat, you're not going to hear anything at all.
I have a Samsung SyncMaster (17" flat-glass CRT). Edit: I got it in 2002. Sometimes it whines upon switch-on, but only for a couple of minutes. In operation there is a very faint buzz which does not change in frequency across all resolutions/refresh rates (mains hum?), but it is inaudible from a sensible viewing distance with the PC off.
I can still tell it's on, just as I can every other CRT monitor/TV - I must be able to pick up some insanely high-pitched noise*, nobody else I know can do it - but just so you know that not all CRTs are bad. A few LCDs can be worse so do a search to see if anyone has a model you're looking at. You can most likely return it if it's noisy, but you may not notice that until the components wear in a little, and you don't want the hassle!
*We had cats messing up our flowerbeds a year ago so my parents installed an ultrasonic emitter to scare them away. Only problem was, I could hear it (even in my bedroom!) and it was very irritating. They soon tried something else However, my aunt uses one (different make) too - fortunately I can't hear it inside her house...
I have a Samsung SyncMaster (17" flat-glass CRT). Edit: I got it in 2002. Sometimes it whines upon switch-on, but only for a couple of minutes. In operation there is a very faint buzz which does not change in frequency across all resolutions/refresh rates (mains hum?), but it is inaudible from a sensible viewing distance with the PC off.
I can still tell it's on, just as I can every other CRT monitor/TV - I must be able to pick up some insanely high-pitched noise*, nobody else I know can do it - but just so you know that not all CRTs are bad. A few LCDs can be worse so do a search to see if anyone has a model you're looking at. You can most likely return it if it's noisy, but you may not notice that until the components wear in a little, and you don't want the hassle!
*We had cats messing up our flowerbeds a year ago so my parents installed an ultrasonic emitter to scare them away. Only problem was, I could hear it (even in my bedroom!) and it was very irritating. They soon tried something else However, my aunt uses one (different make) too - fortunately I can't hear it inside her house...
Last edited by StarfishChris on Thu Mar 31, 2005 4:52 am, edited 1 time in total.
My previous Iiyama CRT, 19 inch also but older model, had to be repaired and after the repair for about two weeks it was dead-quiet. After that it started to buzz even worse, so I had it replaced with a HM903DT-B.
I think there may be some coil noise involved in this CRT buzzing issue, if the manufacturers would care about it they could find a solution to make it dissapear.
I think there may be some coil noise involved in this CRT buzzing issue, if the manufacturers would care about it they could find a solution to make it dissapear.
Last edited by Tzupy on Thu Mar 31, 2005 1:00 pm, edited 1 time in total.
My previous 19" Viewsonic was whining and buzzing like hell at all refresh rates and all resolutions, that was pretty annoying since everything else was nearly silent. So I decided to get a LCD instead. I'll never go back with CRTs again!
I don't think the manufacturers care about coil buzz right now. Some major manufacturers are not making CRTs anymore. Expect to see more and more LCDs in a near future. It's the end of CRTs...
I don't think the manufacturers care about coil buzz right now. Some major manufacturers are not making CRTs anymore. Expect to see more and more LCDs in a near future. It's the end of CRTs...
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Hello:
Some CRT's have fans -- I have a 17" Hitachi CRT that was manufactured in 1992 -- and it still works! It is a bit too noisy...and it is certainly the loudest part of the system.
BTW, wouldn't switching on the CRT when it is unplugged, or unplugging it while it is turned on discharge the capacitors? Also, 50K volts in and of itself is not necessarily deadly. It would also take a certain amount of current to do damage -- and caps discharge instantaneously -- with lots of sparks! So, it is to be avoided, to be sure!
A long time ago, when I was working on small engines (lawn mowers and the like), I touched the spark plug wire while the things were running -- they are something like 20K-25K volts! It ain't fun, but it certainly doesn't have any (noticeable?) lasting effects!
Some CRT's have fans -- I have a 17" Hitachi CRT that was manufactured in 1992 -- and it still works! It is a bit too noisy...and it is certainly the loudest part of the system.
BTW, wouldn't switching on the CRT when it is unplugged, or unplugging it while it is turned on discharge the capacitors? Also, 50K volts in and of itself is not necessarily deadly. It would also take a certain amount of current to do damage -- and caps discharge instantaneously -- with lots of sparks! So, it is to be avoided, to be sure!
A long time ago, when I was working on small engines (lawn mowers and the like), I touched the spark plug wire while the things were running -- they are something like 20K-25K volts! It ain't fun, but it certainly doesn't have any (noticeable?) lasting effects!
I have never had CRT whine. I use 16 bit color instead of 32 bits (I can't tell the difference) and don't go higher than 85 Hz refresh rate.Talz wrote:Hah CRT whine is my number one complaint with my system right now. I would've switched to an LCD panel if I wasn't using the notebook so much more lately.