Wrong Power Supply causing loud buzzing?

I just moved, and forgot to pack the power supply along with my Inspire T5400 speakers, so I thought I would use another that fit. since then the speakers make a horrible, loud buzzing and I can't hear the underlying sounds at all. Is it possible that the wrong power supply can do this? Can I order another one from Creative?

Nevermind, I found the correct P/S and it workds great. I we todd did...

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Sat P100 wrong power supply plugged in

My friend plugged an 18v supply to my laptop which for this model should be 15v. Now when I plug the correct power supply in, not even the power LED illuminates. Is there a fuse to be replaced or some reset that has to be performed to get it working again?
Please help as I need my laptop for work!
Thanks

When it was almost new it developed some faults and although Toshiba collected it for service, they were rude and returned the machine with issues still remaining, citing Vista as the problem. My attitude was don't sell machines with Vista if they don't work properly. Later I upgraded the RAM and it was much improved. My main concern remained the attitude of Toshiba UK and I vowed to never knowingly buy another Toshiba product for me or my family. I'm looking at the Lenovo range at the moment for a replacement - they come highly recommended for build quality.

Wrong power supply brick provided with laptop, need replacement

I purchased a dv7-4060us laptop from Office Depot about a week ago. When unpacking, it was discovered that it contained a 65watt power brick. While using the laptop with it plugged in, a notification popped up saying the power supply was insufficient and would work, but would be slow to fully charge the battery. After googling a little, it was discovered that it should have contained a 90watt power brick. I tried swapping it at Office Depot to which they responded that they did not have one to give, and to call HP.
How can I get the proper power brick?
Thanks,
Scott

Might be less of a headache to return the unit to OD for a full refund, then shop it somewhere else.
If not,
This us a user to user forum, Contact HP directly, they will guide you on what to do next to get the correct adapter
USA http://welcome.hp.com/country/us/en/contact_us.html
Everywhere else
http://welcome.hp.com/country/us/en/wwcontact_us.html

Wrong power supply info in pc alert4

The motherboard is :MSI k8n sli with latest firmware from august 2006
The problem is the pc alert new some old versions says in 12v onlu 2v then the program pops up ,ihave tryed with 2 identical boards and same fail .
ihave testet with another powersupply same fail .
in the bios says it +12v
how can i get tis fail away ?
the board is updatet to day with latest drivers also from ms updata.
is it normal if i connect a fan with low rpm it dont can see the rmp corectly it says 0 rpm then 1300 rpm then 0 rpm ?

Thanks for yor answer .
Can you tell what i can do to get the information correctly ,are there a program look like pc alert easyly to use ?
Ihave installed digicell and corecenter .
Is it normal a fan with low rpm not work probaly with the rpm in these monitor programs ?
the fan is af northq 120mm w blue light

Is the 65W power supply killing small laptop hard drives?

Apple is NOT shipping 45W power supply units to my country (Costa Rica) and the authorized resellers are selling 65W power supply units to PowerBook 12" and iBooks owners, saying that older and smaller laptops can use the 65W unit without problems.
In 1 month, 3 of my friends have lost their powerbook 12" hard drives, all of them were using 65W units.... is it possible that the 65W unit is damaging the hard drive?
Apple documents don't mention any kind of problem related to using the wrong power supply, but doesn't say it's ok either.

Well the authorized resellers are the ones you should
take this up with. If they won't listen, call
AppleCare. Computers are particularly sensitive to
power supply variations. Here is one article which
the resellers should read:
http://docs.info.apple.com/article.html?artnum=75448
I actually printed that document and went to the store to show them they were selling the wrong adapter, but they said Apple is no longer sending/selling 45W adapters to them and they said also that Apple gave them a memo saying that 65W adapters cause no troubles to smaller laptops.
As you can see in the article there's no warning about using wrong adapters.
Hard drives shouldn't be affected by power supply
variations, and given the fact the computer only
takes as much power as it needs, you are more likely
to have a problem putting a 45 W adapter in a 65 W
unit than vice versa.
Even so, your friends could have all lucked out and
gotten a single bad batch sent to Costa Rica.
Yeah, this is absolutely possible, but what are the chances that the three laptops using wrong adapters had hard drive problems?...
I basically want to know if this is happening on other countries (the "no 45W adapters" thing) and if also the hard drive problem could be related to the 65W one.
Regardless, what happened to their original adapters?
One guy lost it on a trip to the beach; the cable that goes to the computer was broken on the other two.
Thanks for taking time to write this answer!

WRT150N power supply humming?

Hi,
I have been having lots of issues ever since I upgraded my firmware. I have been changing the wireless channel on a daily basis trying to find the best one with the least intereference. Then last night when my router locked up as I was power cycling it to bring it back I heard my power supply making a buzzing sound while plugged into the wall. I unplugged it and left it that way all night and when I plugged in this morning no buzzing sound. I am wondering if maybe my power supply is faulty and causing my router to lock up. When it kicks me off today I will check again. Anyone else have this problem?

Power off the AirPort Extreme for a few minutes and start it back up to see if a simple reset will get things going again. If not, replace the power supply.
Airport Extreme Power Supply - Amazon.com

My PH m7160n Desktop PC the power supply make high noise no signal to the monitor

my PH Media Center m7160n desktop PC the power supply make loud noise and no signal to the monitor I already replace the power supply but still the same, Thanks
Davilea

Hello @davilea,
I understand that you are getting a loud noise from your computer and a 'No Signal' message on your HP Media Center m7160n Desktop PC's monitor. As you have already replaced the power supply I will provide you with the HP Support document: Flat Panel Monitor Displays Message about No Signal, Signal out of Range, Sleep, or Power Save, which should help you resolve the 'No Signal' message.
Please re-post if you require additional support. Thank you for posting on the HP Forums. Have a great day!
Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
Also be sure to mark my post as “Accept as Solution" if you feel my post solved your issue, it will help others who face the same challenge find the same solution.
Dunidar
I work on behalf of HP
Find out a bit more about me by checking out my profile!
"Customers don’t expect you to be perfect. They do expect you to fix things when they go wrong." ~ Donald Porter

Help with kernel and possible power supply problem

From 2 days after getting my imac I had my first Kernel restart. Since then I have done everything apple has asked. Ram resets and removing everything from the imac itself To find that it still had a kernel problem. The error messages are Plugnplay or spinlock usually but have also been various ones such as Kerneltask. I have done a full reinstall of the operating system and only installed official apps from apple store, adobe flash and silverlight and next day was a kernel error for plugnplay.
The imac is currently in the shop for a look at but 2 phonecalls back saying they have had no evidence of errors. In fact its perfect for them. The kernel is usually a few hours from turning it on but can go all day fine But they have had the imac almost a week.
So the only thing I can think of is if it works great for them is either they are really lucky or have a different electricity supply/cable. So this leaves me thinking as stupidly as if it is working perfect for them then could it be a surge protector or power supply causing the random crashes? Even something to do with the power lead itself? I am really pulling at strings and going crazy because the only other thing I have been told to do is spend a week at a time just adding one thing at a time till the error shows itself so could be months and months.
i know kernel issues are historically hard to diagnose but any help would be great. At the moment i have a £3000 paperweight on my desk thats only turned on a few hours a day because I have no faith in it.

Hi Joel,
For the external drive issue try resetting your firewire ports.
To do this, shutdown and disconnect the firewire devices from your computer and from each other if there is a chain of them. Now disconnect the power cords from both your computer and from the firewire devices. Wait fifteen minutes. Connect up again and see what happens. The FW ports on Macs have a 'self re-setting fuse" that requires all power to be removed for a period of time for re-activation.
You may also want to try a PRAM reset if that doesn't resolve the issue. Sometimes this can also be implicated in FW problems. Shut down. Hold down the command option p r keys. Now start up, keeping the keys mentioned depressed until the chimes have sounded three times.
Cheers
Rod

Is a bad logic board due to a bad power supply?

Computer specs:
iMac G5 20", 2.0 ghz, 1 GB RAM, 250 GB hard drive
Back in October of 2008 my iMac G5 Power PC shutdown intermittently and then when I went to go to start it back up, it booted to the blue screen and hanged there forever. So, I did a hard shutdown and then waited and then booted again and it still hanged at the blue screen. I tried booting in Safe Mode, and that worked, so I had a chance to backup everything that I needed to. Then, I took the computer to my local Apple Store to speak to a "genius". They could not diagnose my computer while I was there, so they needed to take it overnight and let me know over the phone what the issue was. The next day they called to tell me that it was a Logic Board issue and that it would cost $900 to fix it. I obviously was blown away at the cost for the problem, and I could not afford that charge so I seeked out other options. I found a shop in my neighborhood that offered me a used 1.8 ghz logic board for half of what Apple was quoting me, so I went with it. Then, 9 months later (which brings us to present) my iMac completely shutdown on its own and would not start up. I ran it through some tests (LED lights on the interior) and confirmed that it was a Logic Board issue again. So, I took it back to the shop in my neighborhood and they told me that the warranty for the part they replaced had expired. So, I called Apple Customer Relations to talk to them about the issue. They confirmed, using my serial number, that I could get my issues fixed for free. They then told me about the "iMac G5 Repair Extension Program for Power Supply Issues" which was news to me. This Program ended in December of 08, meaning I would have qualified in October of 08... the time I initially brought in my computer. So, I brought my computer to the Apple Store to drop it off for repairs, and when going over the history of the machine they confirmed that because there was a used 1.8 ghz part in my machine installed from a non-authorized Apple place that they COULD NOT fix my issues now.
My question is:
Back in October of 2008 when I brought in my computer to the Apple Store and they diagnosed it with a bad Logic Board, could that have been because of a bad power supply? If that was the case, does a bad power supply cause a Logic Board to go bad?

Welcome to Apple Discussions.
The short answer is no, but it's actually more complicated than that. The original iMac G5 17 and 20 inch models were plagued by two problems: defective capacitors which affected the logic board, and an unrelated set of defective capacitors which affected the power supply. Rarely were both conditions present at the same time, but Apple decided—when they issued the repair extension authorization—that replacement of both components was a more cost effective approach. By far, the most common of the two problems involved the logic boards.
The REA covered machines for a period of three years from first sale, and ended in December of last year. Yours likely would not have been covered due to the date of sale provision. On a case by case basis, AppleCare representatives did allow coverage for machines beyond the three year limitation, but not past the end of last year.
It's not likely that you have both a defective logic board and power supply, though you may. The combination of these issues is actually found most frequently in the iMac G5 ALS models, none of which were covered by a repair extension authorization.
Your issue is a difficult one, as Apple authorized dealers and service providers have every right—and, actually, a responsibility under their annual agreements—to reject warranty, AppleCare or REA coverage for parts or labor when compatible but not similar logic boards have been placed in your machine. This is because they must exchange these parts for the part they are requesting from Apple on a like-for-like basis, and that part must be associated with your machine serial number. In trying to resolve your issue, the shop in your neighborhood actually created an additional issue for you which would only be triggered in the event of component failure. I have no idea what period of coverage they typically offer, but Apple provides for 90 days or the balance of any warranty or AppleCare extension in place at the time of the repair, whichever is greater.
Your logic board can be refurbished for $ 189.00 if it in fact exhibits the capacitor issue. That process is covered by a one-year warranty. If you are interested in exploring that option, send a message to the electronic mail address in my Public Profile and I will reply with additional information. To help determine additional information concerning your machine, please include the machine serial number if you elect to do write for more information.

3750X stack with broken 715W power supply

I have a stack of 2 WS-C3750X-48P      15.0(2)SE6            C3750E-IPBASEK9-M
Each switch has two 715W power supplies.
It happened one power supply is broken and stuck all stack. Why ?
Thanks to all
Alberto

Hi Charles, yes the 2 switches act like one stand alone sw
Switch 1 connected to Switch 2
and with the second cable,
Switch 2 connected to Switch 1
There are no stack power cables.
IOS    c3750e-ipbasek9-mz.150-2.SE6.bin
Log now is   000455: Apr 21 11:00:31.065 UTC: %PLATFORM_ENV-1-FRU_PS_ACCESS: FRU Power Supply is not responding
I have only one electrical line to the rack
The problem is that a broken power supply caused to switch off all the rack.
In fact the master electrical switch of all the rack went down.
Last 3 months the same problem happened twice to two different stacks.
Is it possible a firmware bug ?
Tell me if you need further info. Thanks a lot
Alberto

E4200 power supply

I purchased a refurb e4200 and it had a power supply which was 2 seperate pieces (a power cord which plugs into the power supply and that plugs into the unit). Well this power supply did not power on the unit. I wanted to get online right away to I drove to Wally World last night and bought a new e4200. This one came with a large plug which was all 1 piece. I plugged it in and no problems. Now my question... did they have problems with 1 kind of power supply and switch to the other or was I given the wrong power supply?
Everything I see online shows the e4200 with the 2 piece cord and the e3200 with the 1 piece cord.

I think I might of figured it out....
Did the 2 piece cord come with version 1 and the 1 piece with version 2?

Inspire 5700 power supply assistance needed.

Hello,
I have the set[Inspire 5700] but am in a bit of bother. The power supply is missing.
I hope to set these speakers up for a friend but am in need of the power supply.
Can anyone tell me the measure of mA for this psu? I know the voltage[15v] but not the trickle amount. I should be able to get a 15V transformer somewhere.
That's it for now...I'ld be obliged to anyone who has the specs for this as I am unable to get this information from the net or on tech suppot docs from creative.
keeto

Originally Posted by Freezy
edit: I found a post in a german forum saying it needs 15 V 4000mA DC, the guy bought one off ebay with the wrong power supply, but with the manual where he found the info.
Erick ty....
Freezy man, tnx. Just need to know for clarification purposes that the 4000mA is right...that's a 'fair bit of poke' to be wielding.
...just want to make sure is all. ok.
edit:I see that the amps are 4 from erick's post and the 4000mA from F's...I realise[?] that 4000mA is the same as 4A...is it?
keeto

Is power supply 3k-X 715W AC hot swappable on Cisco 3750X?

Is power supply 3k-X 715W AC hot swappable on Cisco 3750X?
Thanks
Diego

Sorry, found the answer http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/hardware/installation/guide/3750x_3560x_HIG/HIGFRU.html
The power supply is hot-swappable. In some configurations, such as full PoE+ or power sharing mode, removing a power supply causes powered devices to shut down until the power budget matches the input power of a single power supply. To minimize network interruption, hot swap the power supply under these circumstances:
–The switch is connected to an XPS 2200 and sufficient power is available.
–The switch is in StackPower mode and sufficient power is available (Catalyst 3750-X only).
–The switch is powered by other switches in a power stack, and no active backup is in progress.
For the switch commands for displaying the available power budget, see the Catalyst 3750-X and 3560-X Software Configuration Guide.

Noisy power supply when running of UPS? Is this normal?

Iv recently purchased a belkin 1500VA UPS, which in the near future i was looking to use on MAC Pro (once iv actually ordered and received it) The price was to good to miss, as it was currently on offer at misco and quite heavely reduced. So i went ahead thinking it would be a good idea to have for my G5 anyway. Everything setup a treat and the built OSX controls are fine but when the unit is on battery backup. Sleeping or in normal usage the actually G5's power supply makes a buzzing electrical sound from the power supply? I have read about this a little else-wear but no one has yet confirmed if this is normal/acceptable for a G5 to do this. Or the that the noise is the sign of a dodgy/faulty power supply.
I am aware the UPS also makes a noise when running in backup mode. But the UPS and the tower are some distance apart so i can quite easily identify that the noise is coming from the G5.
Any user experiences or advice on this would be much appreciate. I dont want to burn my power supply out. I still love my G5 very much. Cheers in advance for anyones assistance. Pob

Thankyou everyone for all of your responces. I think we're getting to the bottom of things now. It would appear that when in battery back up mode my UPS is generating a square wave which my powermac is not liking at all. And the power supply is working to put this right. Weather the work the power supply is doing and the noise generated is a sign of harm to my computer is still some what unclear. But it does not seem like a good noise as it is not normal.
It is also interesting that maclover has no problems using an APC smart ups that produces sine wave. So this points to square wave being the saurce of problems. Thankyou maclover for also pointing out that other very useful thread that concludes the smart ups range seems to be the way to go. Even tho a little more money i would prefer to have no noise! And be sure im not harming my Mac.
Malcolm Rayfield - I am under the impression my UPS does no produce a sine wave. And you saying that the noise is the input filter sorting it out does make sense. I am going to contact Belking and Apple tomorrow and hopefully either way confirm that this noise is a bad thing or just something iv got to live with.
DaddyPaycheck - My belkin model number is F6C1500EITW-RK. Quite a new model i think, dual form, 1500VA. Very pleased with all the features. This model does have AVR too (Automatic Voltage Regulation) But it would appear from what everyone has said along with some other findings about the web that this unit produces square wave! I guess yours is Sine wave hence you not having any problems.
I will probably end up returning this unit and buying an APC SUA1500i. As its been confirmed in this thread and the other thread that was linked to as producing a nice sine wave which is what i want. Again thank you everyone. Pob

Bad Power supply on 20" iMac G5?

Seen several posts on potential bad power supply causing shut down on attempted start up. This unit had gone through 3 hard drives, 2 under Applecare. It started shutting down on boot about 6 months ago. It would boot into Firewire mode but you couldn't see hard drive. Gave up and bought a new 27" iMac. Here it is 6 months later and we happened to plug it in and amazingly it booted and worked fine. We quickly made a backup. It had been running for about 24 hours and I tried to update and it returned to it's bad habits and won't completely fire up. I've heard a bad hard drive can cause this or a bad hard drive.. The fact it booted after being off for months would indicate to me that the power supply has some bad capacitors and after either discharging or cooling off became functional again. Could a flaky power supply cause hard drives to fail. Should I buy a new power supply so I can have a spare machine?

As Miriam says getting inside the power supply can be a problem. There are security type Torx screws and if you can get hold of the drivers then it's no problem. However if you look at the surface just above the power supply and if you see a dot pattern that's a good indication of failed capacitors. If the power supply is still somewhat working I've had good luck bringing it back to life by replacing the capacitors. If not and the other capacitors on the logic board pass the visual test then a new power supply would solve your problem.
Email me and I can provide further information.
Richard

Wrong Power Supply causing loud buzzing?

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