high tone while pc is turned off

**okeee** · 10-24-2008, 05:47 PM

When I turn the pc off, I still hear a high tone pinch sound, I'm not sure where it comes from. And only when I turn off the power supply as well, the sound dissapears. So what is this sound and what part does it come from? The videocard has already been removed.

**magnethead** · 10-25-2008, 10:31 PM

sounds like capacitors. my converted bench unit does the same thing, just from old age.

**okeee** · 10-26-2008, 05:49 AM

I checked the capacitors, but there was no goo coming out. I listened more closely and the sound seems to come from the power supply. What does this mean? When I turn the power supply off, the sounds brakes down like a motor when it's coming to a halt, and then it's quiet.

**wrench97** · 10-27-2008, 05:54 AM

Is the fan in the PSU still spinning when the PC is turned off?
The PSU has caps in it also.

Ipodtouched32 · 10-27-2008, 08:19 PM

I think i would prolly just upgrade my power supply how old is it?

dai · 10-27-2008, 09:08 PM

what are you running
video card
cpu
m/board
ram
power supply
brand
wattage

check the listings in the bios for voltages and tempretures and post them

10-24-2008, 05:47 PM	#1 (permalink)
okeee TSF Enthusiast Join Date: May 2006 Posts: 547 OS: win me	high tone while pc is turned off When I turn the pc off, I still hear a high tone pinch sound, I'm not sure where it comes from. And only when I turn off the power supply as well, the sound dissapears. So what is this sound and what part does it come from? The videocard has already been removed.

10-25-2008, 10:31 PM	#2 (permalink)
magnethead Registered User Join Date: Mar 2006 Location: Texas, USA Posts: 3,570 OS: Vista ultimate 32bit My System Blog Entries: 3	Re: high tone while pc is turned off sounds like capacitors. my converted bench unit does the same thing, just from old age. __________________ For proper support: what are you running? graphics, cpu, m/board, ram, PSU brand wattage PCI-E requires 26 amps at 12 volts. That's a 650W PSU. Power Supply Info and Selection . Info on thermal compounds & application . TEST PSU USING MULTI-METER . Bench Testing Your System

10-26-2008, 05:49 AM	#3 (permalink)
okeee TSF Enthusiast Join Date: May 2006 Posts: 547 OS: win me	Re: high tone while pc is turned off I checked the capacitors, but there was no goo coming out. I listened more closely and the sound seems to come from the power supply. What does this mean? When I turn the power supply off, the sounds brakes down like a motor when it's coming to a halt, and then it's quiet.

10-27-2008, 05:54 AM	#4 (permalink)
wrench97 Moderator, Hardware Team Join Date: May 2008 Location: S.E. Pennsylvania Posts: 18,579 OS: Win7	Re: high tone while pc is turned off Is the fan in the PSU still spinning when the PC is turned off? The PSU has caps in it also. __________________ Power Supply and Selection

10-27-2008, 08:19 PM	#5 (permalink)
Ipodtouched32 Registered User Join Date: Oct 2008 Posts: 18 OS: Windows Vista sp1	Re: high tone while pc is turned off I think i would prolly just upgrade my power supply how old is it?

10-27-2008, 09:08 PM	#6 (permalink)
dai Manager, Hardware Forums Join Date: Jul 2004 Location: west australia Posts: 56,614 OS: win 7 32x 64x rtm	Re: high tone while pc is turned off what are you running video card cpu m/board ram power supply brand wattage check the listings in the bios for voltages and tempretures and post them __________________