High voltage noise

Hey,
I have a macpro mid 2010 12-cores 2.93ghz which connected to an apc br1500 ups. everything was great until the ups had a failure "f2" . I realy don't know it means, but since this failure happened the macpro has a high voltage noise from it's power cord (where it pluges into the computer). by the way, the 27" cinema display does the noise, very loud noise. besides that, both working o.k.
I took the display to the lab and it worked just fine there, no noise. so I guess there is a problem with the macpro.....:-(
anyone had the same promblem? any ideas about a possible part that might be dammaged?

It could be your power mac's supply. I don't use a UPS but I've read that there are (more expensive?) kinds with "pure" sine wave AC supplies and some cheaper ones with sine wave approximations. I don't know which category yours fits in to. Perphas when your UPS failed the AC waveform changed and affected the mac's power supply components in some way, or maybe a voltage spike. Just guessing/speculating here of course.

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Time capsule makes high pitch noise then shuts down

Time capsule makes high pitches noise then shuts down

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If the Time Capsule in warranty, Apple will replace it. If you have AppleCare in effect on one of your Macs, the Time Capsule might be covered as well if it is not more than 3 years old.
Take the Time Capsule to an Apple Store....if you have one near you....to discuss your options.
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http://www.apple.com/support/contact/
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Hello.
Firstly I want to say that yes I know people have asked this question before but as far as I can tell none of them have been solved. Some have somewhat useful answers but none of them truely solve the problem. This thread in particular probably has the most information about the problem I'm having http://forums.adobe.com/message/4298535#4298535
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I've tried different settings for premiere. Trying 60fps and 30fps for the framerate for the project. Trying 44khz and 32khz and 96khz didn't fix it. Using the "Desktop" preset in CS4 and Custom for CS5.5.
My audio hardware is a Logitech G930. It's a wireless USB headset with microphone. My motherboard audio is Realtek HD Audio. Both are enabled but I only use the headset now and nothing is being sent to the Realtek audio chip (according to Windows' sound options). The headset plays audio at 16bit 48khz.
The video file plays fine in every media program I own that can play the h264 codec. With the exception of Movie Maker and Video Studio x6. Video Studio will preview the video and audio just fine but when I try and skip around the program hangs and crashes. Movie Maker just plain crashes when I try and import the video. Some of the programs that can play the video are VLC, Media Player 11, and Media Player Classic.
I'm not sure if Final Cut Pro has the same problem. I don't have a Mac so I can't test it.
Here's a sample video that works the way it should. I pulled a BIK file from a game and converted it to H264 in AVI. Not sure what it's audio format is.
http://www.mediafire.com/watch/15fr85n78xfu94x/Opening_Cinematic_Placeholder.avi
Just click the download button at the top right.
Here's an afflicted file. Not the exact specific file I have been talking about, but it has the same codecs. This one is shorter in length and smaller in size. It still has the high pitch noise, but since there is no one talking in this you don't hear the weird low pitch distortions.
http://www.mediafire.com/watch/qqbk0n6io0lspn5/eso_2014-02-28_20-08-18-959.avi
Just click the download button at the top right.
If there's anymore infor you need let me know.
Thanks.

>single AVI file. The video format is H264
H.264 will not work inside an AVI wrapper http://forums.adobe.com/thread/854115
-Insignia camera uses H.264 to either AVI... SOME to MOV wrapper
-so use the MOV wrapper if YOUR Insignia camera offers that option
-Says VLC will convert in reply #6 http://forums.adobe.com/thread/1172956
>can't believe a professional piece of software can't handle something this simple
As Jim said, not within the design specifications because it is non-standard video

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I have isolated the following issue to audio that is monitored via the headphones output on the back of my iMac:
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OK, It is very easy to reproduce the problem, just follow this steps:
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BTW, I turned OFF WIFI, Bluetooth, removed all USB devices except keyboard and mouse, adjust monitor brightness, they have no effect on the high pitch, it is still there!
I am going to call the Apple Care tomorrow. Will keep you guys posted.
Message was edited by: chienlim

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Hello Aaron,
Before you read any of the posts I am about to link you to - You MUST promise that you will not do anything that you are not competent / capable of / or experienced in!
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It sounds like two seperate problems to me. The zooming in and out sounds like a problem with the high voltage regulation. Could be indicative of a failure on the horizon. The other problem you describe could have to do with magnetic interference from high current power lines. You might want to look into getting a new, LCD monitor. LCD monitors are immune to magnetic interference.

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Hi. All.
I have a Aluminum PowerBook G4 1.25Ghz SD. I agree this is a great machine. It has a somewhat out-dated G4 Chip in it, I can do almost everything I need.
I've been using this powerbook for 2 years. Since sometime ago, I've heard very annoying "Hige Pitch Noise" from PowerBook. From further investigatin I found that this was a problem related to G4 CPU Processor throttling- so called "NAP" status. In Flash-intensive Web site, I clearly hear the noise.
According to solution suggested by talented apple user, I did followings.
1. Download or Install Developer Tools.
2. Download and Install CHUD tools from ftp://ftp.apple.com/developer/ToolC...ormancetools/
3. After installing chud tools, there maybe Processor pane in preference app.
4. In that processor pane, you should uncheck "Allow Nap" to reduce the notorius High Pitch Noise.(warning: it may increase the power consumption and temperature of CPU a bit, and of course you would see more frequent activities of CPU fan than before)
5. feel the silence.
To Apple.
I think this solution should be suggested from you not users.
Why we investigate, search the web for thosand of bucks PowerBook. Please fix this annoying(yes, annoying enough to cause headache) problem in next OS update.
To readers.
Sorry to my poor English(I live in Seoul, Korea)

These are user-to-user discussion boards. Apple employees do not take part in or respond to posts on these boards.

How soon for new BIOS with Higher Voltage?

This is mostly directed toward moderator Bas
Do you have any idea if MSI plans to give its users an option for higher voltage to the cpu in later Bios updates?
Does this board even support it?
I know that there are a lot of people asking the same question.
I am an avid overclocker and I know I am being limited extremely by this...
My RAM will past Memtest x86 all the way up to 250MHZ but as soon as I go to load windows it craps all over the place.
I wish there was some more information on this as if MSI isnt going to make this available I am going to have to go get another board :(
I also own another msi board the 865PE for my P4 Media system and it clocks great. It's a 2.4B to 3.15 no prob!
I have seen posts wth people getting the AMD64 3200+ to 2.6 and over with other boards that allow high Vcore such as the ABIT KV8-MAX3. In the post I saw the guy had his Vcore to 1.75. That would be great!
Anyone with knowledgable input would be greatly apprecited especially Bas.
Posts on other boards besides the Abit and gigabyte as far as clockable boards would be helpful too.
Happy Clocking!

We'll that makes mee feel a little better to to know that even a .1 step up in voltage allows the memory to get to 245. For me at least so far I dont even have to step up the voltage in the AGP and memory area. My OCZ ram in 2.9V stable while still under warranty but right now I am limted only by the Vcore.
It is good to know though that the Abit board doesn't allow for stepping up in those areas as of yet though cause once we do get a little more Vcore into our processors that will become more usefull down the road. Though if you say they slowly bring in more options for the Bios we can only cross our fingers for now until we can hear from MSI directly.
On Monday I am going to try and give them a call and see what I can get out of the tech support group.
I will post what reply they give me.
OVERCLOCKERS UNITE!!!
If we let em know what we want it may speed up the process a little!
At least 1.65 for the VCORE!
Love my A64 so far though. I would hate to have to get another board just to sqeeze out 20MHZ more but cha got to do what you got to do.
GO MSI GO

High voltage noise

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