1
vote
0answers
34 views

Should you worry about high voltage and wattage on a non-overclocked computer?

I've been wondering if I should be worried at all about high wattage or voltage on a non-overclocked computer. I say non-overclocked because when I Google search this question or something similar it ...
-1
votes
2answers
37 views

What do OUTPUT charts of PC Power Supplies mean?

I'm looking at various power supplies and they all come with different output cables. They also have different OUTPUT charts, for example: What I'm wondering: What are these output columns are ...
0
votes
1answer
120 views

How can a power supply rated 7A be strong enough for two devices rated 5A? [closed]

I am not understanding something fundamental to amperage: Consider this adapter which outputs 12V 7A. It claims that several (eight, in this case) devices running at 12V 5A can draw enough power from ...
1
vote
2answers
162 views

PSU blue wire reads strange voltage

I was testing my PSU with paperclip method and checking the voltage of every wire just to be sure it is 100% functioning. What surprised me was that every wire was working just fine but one, the blue ...
1
vote
1answer
64 views

Is PSU voltage ripple something to worry about?

I'm currently putting together my first computer and I've had my eye on a Fractal Design Newton R3. From all of the reviews I've read this PSU comes out shining with the exception of voltage ripple on ...
1
vote
0answers
90 views

When unplugged, the UPS plug gives out current. Is it bad? [closed]

We have several power issues in our house like : Occasionally loosing bulbs (in two holders, the light bulbs went out two times. If we put a new one, it will go out after several days. One went out ...
1
vote
2answers
371 views

Computer cables explained [closed]

I've noticed lately that places to learn about both power supply cables and also peripherals and fans aren't that easy to find. There's very little information available that gives detailed ...
1
vote
3answers
372 views

would I save power using a lower voltage power adapter? (on a modem)

from various experiences modems, access points, and other devices will often run fine even with power adapters of lower voltages (compared to their original power adapter). I am wondering if using a ...
0
votes
1answer
170 views

Power Supply case measures 75V?

My friend showed me his dead computer. When I powered up, the green LED on the motherboard didn't even come on. He had bought a new $40 500W power supply and he wanted me to install it. I did, and ...
0
votes
2answers
86 views

Cable from laptop brick to wall [duplicate]

I've seen plenty of questions asked about the power output of laptop bricks to the laptop - however my question is does the plug and cable that runs from the laptop brick to the wall need to match up? ...
1
vote
2answers
1k views

Power supply bad with good voltage?

I am trying to drive out the reason I am having some hard drive "hard resetting link" error problems on a Linux Debian box. I am trying to eliminate the power supply as a problem in trouble shooting, ...
1
vote
1answer
413 views

Insufficient power from an adapter

Would not having enough power (or voltage or amperage) from an adapter make a laptop no longer charge/boot up (if the battery is out of power)? What about causing shorts? And would using a different ...
0
votes
1answer
57 views

Manually starting a PSU lowers the output Voltage

I have a PSU. When I start it using a motherboard, I get a little over 5 and 12 volts on the respective lines. But when I manually start it (by connecting PS_ON to ground), I get only 4.2 Volts on the ...
2
votes
2answers
436 views

Weird voltage issues - intermittent low 5V line

My computer has developed a strange ailment: when I turn it on, the 5V power line from the PSU is very low, hovering at around 4.2V. This is intermittent however, sometimes it jumps back up to 4.98V. ...
1
vote
1answer
611 views

What are the costs and benefits of using 12V-only motherboards? [closed]

According to my research, it sounds as though power efficiency concerns in recent years have driven some hardware manufacturers to create different power supplies and motherboards which are ...
1
vote
2answers
380 views

HDD is very slow after voltage drop

The HDD is Seagate Barracuda 7200.7 160 Gbytes Model ST3160023A. Of course it is not SATA. I once connected it to the USB via special adapter IDE-to-USB, and a separate power unit. The voltage drop ...
9
votes
3answers
2k views

Can I have too high a PSU power rating?

I have just ordered a 650 W PSU for my computer which previously had a 300 W, in order to install a more powerful graphics card. However, I didn't check whether anything would blow up ...
1
vote
1answer
884 views

Have a 40W power supply - will it power a laptop that needs 65W? (18.5v 3.5A (=65W))

Have a 40W power supply - will it power a laptop that needs 65W? I know that the basic calculation, voltage x amps = required wattage, so 18.5v x 3.5A =65W I realise that it should only draw the ...
3
votes
1answer
967 views

PSU voltage with multimeter

My PSU started making some noises even when the fans were stopped. I also had USB problems (two USB devices burned) so I checked the PSU voltages with a multimeter. I removed the PSU and connected it ...
1
vote
2answers
935 views

My dlink power supply broke, I found a similar one on old boxes. Is it going to damage my router if used (specs and pic inside)?

I have an old dlink wi-fi router to connect old 802.11g devices at home. It's power supply just fried after a storm. Buying a new power supply is almost the same price as a used router like mine, and ...
1
vote
3answers
2k views

Can I run a router with a lower voltage power adapter?

The power adapter for my Linksys WRT54GL v1.1 router died - its output was 10V, 1000mA. I've tried using a replacement adapter (7.5V, 1000mA) and so far it works. Is this situation stable, or should ...
1
vote
2answers
1k views

Same voltage, different amperage for two power supplies

I've just plugged an 18.5V 6.4A HP power supply into an HP laptop; I normally use an 18.5V 3.5A power supply. Since the connector fit, I figured I'd give it a go... so far no funny smells or fires. ...
0
votes
1answer
1k views

Very low power supply voltages

My computer is fairly modest in terms of power consumption: 4 7200 RPM SATA-II hard drives An IDE DVD-writer Four 80mm case fans Two 95mm heatsink fans Intel Core i7-920 2.66 GHz (OC to 3.80GHz) ...
3
votes
1answer
6k views

PC power supply & normal range for voltages reported in BIOS hardware monitor?

I'm trying to diagnose whether my computer has an ample power supply. Sometimes when I play a video-intensive game, both monitors lose the video signal, even though the computer remains on and sound ...
6
votes
2answers
1k views

What are good values for PSU voltages?

I have an odd computer I'm trying to fix that will crash only during the setup of an OS(crashes on every OS I've tried so far) It's not overheating and it is stripped down as much as possible and I've ...