Question about IBM ThinkPad R40 Notebook

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Switching off immediately no ac current

When using it just goes off immediately there is a power outage.I don't know what todo

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Sounds like thermal shut down... basically getting too hot... you need to make sure the fan(s) are working.. you also need to clean out the dust and dirt from the fan and heatsink.

Robert

Posted on Jan 24, 2009

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When electricity goes out and goes back on, AC stays off. How do we keep it on?


You can't. The unit is doing what it's supposed to do in a power outage. If it started back up immediately when the power came back ON, it may surge and burnout the electronics of the AC unit.
Be happy, it's operating as it should.

Jul 22, 2011 | Heating & Cooling

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Power Outages, what you need to know!


We have all had them, Power Outages, inconvenient, and also very deadly, well to Electronic equipment anyway. You see when any Circuit, is Made or Broken, at the instant of contact, when reconnecting, the current draw is considerable, also, after the connection has been made, and the "Load" being connected, and the Current draw is large, all sorts of transients, Spikes, Surges, Oscillations, is reflected, up and down the entire network. Now along with this, MOST people do NOT completely remove, the unit from the mains, by withdrawing the plug. nor, probably, even turn it off. This is wrong, ALL/ANY electronic equipment, that is connected to that Grid, will also encounter a phenomenon know as "Inrush Current" Now, this Inrush Current, Can and Does cause a great deal of damage to electronic equipment, the, instant reconnection, without going through an ON/OFF switch, and Power Conditioning Circuitry, well, the initial Current draw for that instant, is incredibly, high, and with nothing between, the current surges in, stressing everything, in the Power Supply, and more. Now along with that, you also have Transients, Spikes, Surges, Ringing, Oscillations, caused by the reconnecting of the Circuits. Joining of Cables, or Contacts. When the Power Goes OFF, you should NEVER leave anything plugged in after a Power outage, you need to withdraw each and every plug, from ALL Electronic equipment, note here, purely resistive, and relay type equipment is usually immune, it must be removed, and it shouldn't be reconnected, until about 5 minutes, AFTER the Power has been reconnected. This is to Avoid, all of the bad things that are caused by the reconnection back onto the Grid. If you do this, you can be assured of you Electronic items, lasting at least as long as they should, and not suffer premature deaths.

on Apr 22, 2010 | Computers & Internet

1 Answer

WE HAD A POWER OUTAGE.NOW MY KEURIG WONT TURN ON. CAN YOU TELL ME WHAT THE PROBLEM IS. THANK YOU.


Hi,first you need to check if fuse has not been blown out.Because when POWER comes back after an outage there is a surge voltage flowing through electrical lines.It is advisable that when their is a POWER outage you have to turn off your FUSE box or SAFETY box to make sure that it won'tdamage appliances when POWER comes back>Technically when POWER SOURCE or SUPPLY has been shut off for a period of time.When POWER is back, expectantly there is an abnormal flow of current/line; current will not be as stable until a period of time..AC current behaves like a wave,values changes from time to time especially when POWER SOURCE has just been TURNED ON..So better turn off FUSE BOX when experiencing POWER OUTAGE so that when power comes back SURGE VOLTAGE wont flow within the circuit>Hope this helps..

Jun 22, 2011 | Keurig Elite B40 Coffee Maker

1 Answer

Dogs chewed up wiring from house to outside ac don't know what goes where


Wires used in AC for power are of different color like red for (+) black for (-) and green for (N). You can slice the rubber (about half inch) ends of broken wires and then reattach them matching the color, like red to red, black to black and so on. After that apply insulation tape on the joints. Make sure you switch off the power before you do all this work. If you are unsure, please call the AC service center and they will send an electrician to fix this.

May 13, 2011 | Heating & Cooling

1 Answer

I have an SC-pm91D system. when i turn it on it goes off immediately, with error code F61. The manual says it's a faulty power supply. is this power supply easily replaceable?


Unfortunately, it is not, unless you are technically adept. The power supply is a transformer inside the unit that handles the incoming 115-120 volts AC current and converts it to electrical current the unit can use. This would be a job for the repair shop technician.

Oct 30, 2010 | Panasonic SC-PM91D System

1 Answer

Dimmer Switch not working after power outage


It's quite probable these units have gone faulty, due to the "Outage" see my previous post below.. You will need to replace these units, to restore functions. Please, have a read below, it may save you many $$ We have all had them, Power Outages, inconvenient, and also very deadly, well to Electronic equipment anyway. You see when any Circuit, is Made or Broken, at the instant of contact, when reconnecting, the current draw is considerable, also, after the connection has been made, and the "Load" being connected, and the Current draw is large, all sorts of transients, Spikes, Surges, Oscillations, is reflected, up and down the entire network. Now along with this, MOST people do NOT completely remove, the unit from the mains, by withdrawing the plug. nor, probably, even turn it off. This is wrong, ALL/ANY electronic equipment, that is connected to that Grid, will also encounter a phenomenon know as "Inrush Current" Now, this Inrush Current, Can and Does cause a great deal of damage to electronic equipment, the, instant reconnection, without going through an ON/OFF switch, and Power Conditioning Circuitry, well, the initial Current draw for that instant, is incredibly, high, and with nothing between, the current surges in, stressing everything, in the Power Supply, and more. Now along with that, you also have Transients, Spikes, Surges, Ringing, Oscillations, caused by the reconnecting of the Circuits. Joining of Cables, or Contacts. When the Power Goes OFF, you should NEVER leave anything plugged in after a Power outage, you need to withdraw each and every plug, from ALL Electronic equipment, note here, purely resistive, and relay type equipment is usually immune, it must be removed, and it shouldn't be reconnected, until about 5 minutes, AFTER the Power has been reconnected. This is to Avoid, all of the bad things that are caused by the reconnection back onto the Grid. If you do this, you can be assured of you Electronic items, lasting at least as long as they should, and not suffer premature deaths.

May 06, 2010 | Lutron Electronic Low-Voltage...

1 Answer

Electronic AC shuts down during power outage.


When I read this...this only tells me that some people are only as bright as a 15 watt light bulb.

You know they have these things on there to keep you alive, instead of catching on fire and killing you with smoke.

Leave it alone and follow the directions. You will live longer.

May 15, 2009 | Frigidaire FAH106N1 Wall/Window Air...

1 Answer

Problem with power cord/AC adaptor...maybe?


I would just go buy another battery charger pack. They are like 75 dollars to buy. Sounds like yours might have a short in it!

Mar 26, 2009 | HP Compaq nx6110 Notebook

1 Answer

Do the Inductors pull out?


What's the LCD is doing when you try to turn it ON?
These power supplies are known to fail due to defective capacitors or shorted components.
I said in an earlier post that the inductors could be use as protection as well but the fuse is the one that fails in most cases when there is a power outage or an current overload from a shorted component is the power supply.
I service this power supplies.
Let me know if you need further assistance.

Aug 20, 2008 | Protron PLTV-32 Television

1 Answer

Toshiba Satellite 1405 - Power problem


Hi Don

Although symptom is showing that AC Adaptor is not working as its not providing power to the unit. I will suggest you to perform some basic troubleshooting steps. Check if outlet is working if not check with known working outlet. If you have a multimeter you can the output of the AC adaptor.

Also you can perform full power cycle and component discharge. Take the battery out and disconnect the AC adaptor press the power button and hold about 7 seconds. After that put the AC adaptor in and test again.

If issue persist take to nearest Service center check with known working AC adaptor. After that I believe you will figure out the best solution.

Good Luck

Jan 21, 2008 | Toshiba Satellite 1405-S151 Notebook

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