Question about Lite On (PS-5101-2B) (ps51012b) 145-Watt Power Supply

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No power output from powersupply.

The fuse is good.there was a fair amount of dust around the fan i wondered if maybe a part overheated.I don,t see or smell any burned part a power transistor i think in the back of the pcb it has no heatsink,it appears to be discolored from heat maybe.I have a Fluke 189 dmm so testing shoudn,t be a problem if i can get steered in the right direction.Thank you.

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Power supplies are not meant to be repaired, as you can easily hurt yourself since the capacitors hold charge. If the fuse is good, and you reset the power supply by unplugging it and then plugging it back in and it still will not provide power, trash it.

Posted on Jul 20, 2009


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Hp mini laptop goes off automatically

Maybe it is overheating or losing power.

Check the Power Cord and the DC Power Jack where the power cord plugs into the laptop.

Maybe your DC Power Jack which is where the power cord plugs into the computer is bad. Take an ink pen and push the tip inside the jack and see if the little pin wiggles, if so the jack is bad. You'll have to take the laptop apart to fix it. Most times it is soldered onto the motherboard, so you will have to desolder the old and solder a new one.


When the computer is overheating it will not boot back up until you let it sit a while to cool off. If your systems shuts down and does not boot right back up, then it might be overheating.

Three causes of overheating:

1) Dust - Dust inside the laptop, dust clogging the fans and vents. Dust around the cpu and heat sink. Solution - Take a can of compressed air and blow out the dust. It's best to take the laptop apart to blow it out.

2). A Fan not working. Take the laptop apart and replace the fan. Most laptops will tell you if a fan is not working.

3). The Thermal Paste around the cpu and heat sink has dried up or is too thin to keep the unit cool. Apply a fresh coat of Thermal Paste around the cpu and heatsink.

If your laptop is overheating you could buy a Laptop Cooling Pad from Tiger Direct at:

When the site comes up just type: Laptop Cooling Pad in the search box and click GO. Sort the returned results by Price Low to High. I recommend the Sabrent for $12.99 which has 3 cooling fans and the laptop sites on the pad. The pad plugs into one of your usb ports.

May 28, 2012 | Computers & Internet

1 Answer

Laptop crasc. no error report

Maybe it is overheating and it shuts down so that it does not damage the motherboard.

Three things that will cause a laptop to overheat.
1) Dust - Dust inside the computer, dust clogging the vents, dust around the fans, cpu and heat sink. Remedy - The best remedy is to take the laptop apart and blow the dust out with a can of compressed air. If you don't take it apart you could blow out the vents with a can of compressed air and it might work, but you will be blowing the dust inside.

2) A Fan not working. The laptop will have to be taken apart to replace the fan.

3) The Thermal Paste around the heat sink and cpu had dried up or is too thin to keep the unit cool. Take the laptop apart and apply a fresh coat of thermal paste around the cpu and heat sink.

One sure sign of overheating is that if you immediately try to power the laptop back up, it will not boot. But if you wait awhile and let it cool off then try to boot it up, you can boot successfully until it gets hot and shuts off.

You could also try a Cooling Pad that plugs into the usb port and the laptop sits on it. It has fans to keep the laptop cool. The pad can be purchased for under $20. Try Tiger Direct at:

When the site comes up just type in the search box at the top: Laptop Cooling Pad. When the search results come back sort them by Price Low to High and you will see them starting at $5.99 or so.

I like the one below for $12.99

May 08, 2012 | Computers & Internet

1 Answer

My JVC RX6030V Turns itself off after a short on period. (a few seconds) do you know what this might be? Could it be a fuse? I found one fuse, but it looks good and tried the foil trick. Maybe I am not...

Don't do the foil trick unless you have a fire extingusher handy.

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on; or it may turn on but produce no audio to the speakers.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Sep 17, 2011 | JVC RX-6030V Receiver

1 Answer

I have a netbook that has not been on for a while i have it plugged into the wall now but when i turn it on it goes to the windows is starting up and then shuts off

Hi there, sounds to me that either
a. the power supply is not powering the netbook. (check if there is a light on the power block)
if there is no light, check the fuse in the plug. If there is a light then check how secure the cable is plugged into the laptop, try wiggling it a small amount slowly to see if any any extra lights come on on the laptop.
b. Next would be possibly the laptop is overheating, listen to see if the fan is running fast. If this is the case then it could need a dust out. Take any removeable panels off of the bottom and look for any build-ups of dust and clear them gently. (a small paint brush would be good for this) If you have access to the fan, you could try removing it to check for further dust accumulations between the fan and the heatsink. (this is the bit that the fan blows through.
c. possible ram or hdd failure (this will be fairly tricky to diagnose without access to parts.)

Hope this helps

Sep 04, 2011 | Acer Aspire One AOA150-1504 Netbook

1 Answer

When i power up the laptop can hear the fan come on then it shuts down.

Hi there,

sound like you have an overheating issue, try removing the access panels on the base of the machine (unplug from the power first) and look for your fan, quite possibly there will be a fair amount of dust surrounding the fan blades, clean these to the best of your ability, and the remove the fan and check where it blows through the heatsink. This is an area which is prone to dust build up. Clear this area, refit the fan and access panels and try starting the machine.

Hope this helps.

May 08, 2011 | Computers & Internet

1 Answer

No video output upon restart.

So it sounds like it's heat-related. Does that video card use a cooling fan? Is the fan still working? Maybe the PC needs cleaning out, you might be amazed at the amount of dust that can build up inside the case.

If you're cleaning be careful not to dislodge anything, or create electrostatic zaps. Leave the power cord plugged in to provide an earth, but turn off the power point. A new 2-inch paintbrush is good for brushing dust out.

If the card has a fan it could be clogged with dust, or may have died altogether. Find someone who knows how to clean or replace it, if that is the case.

Jun 18, 2010 | Intel Systemax NO OS Desktop Computer -...

1 Answer

No audio output or output voltage on 70v terminal

it sounds like you have a power supply problem
try and check for a blown diode inside close or
around the transformer.
maybe this will help.

Oct 12, 2009 | Bogen Communication GS35 Amplifier

1 Answer

Gateway FX400S power failure.

I think you are right. There is an overheating problem. The questions are, what is overheating and why?

Dust is the single most common cause of computers overheating. Dust on fan blades can reduce their cooling capacity by large amounts.

Dust can also cause premature failure in cooling fans. You may have a "dead" fan in there and you don't know it yet.

The trick for you would be (if I was investigating, this is what I would do) remove the cover (assuming this is a desktop or tower) and turn it on. From here you can visually see which fans are moving and which are not.

Exception is the power supply fan; which is sometimes inside the power supply casement.

A can of forced air may help here, but try not to breathe that stuff.

good luck

May 19, 2009 | Gateway FX400S PC Desktop

3 Answers

I think my computer is overheating

you can be sure your computer is overheating if your cursour is lagging or if u see a shadow around it. if so try installing another pc fan with can be found at wal mart or any eletronics store.

Jun 20, 2008 | Computers & Internet

2 Answers

Elitegroup P4M800 motherboard problem get power for 1 sec thats it real puzzle!!

Go to the motherboard manual and detect the "Power Switch" Pins. They are usually under the BIOS Battery. They remove the line connected to the "PWR SW" and push it with a screw. "Make contact between the two pins. If it started then the problem is with your Power Switch.It has to be changed. If not then I Assume that the problem is the Power/ MB. Maybe the Motherboard got a burn because of the overheating. GoodLuck

Nov 15, 2007 | EliteGroup P4M800PRO-M Motherboard

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