Question about HP Deskjet 5940 Photo InkJet Printer

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No light up when selecting power switch on , 220 v source is ok

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Have you checked that the connector on the back of the printer isn't loose and that the power supply is firmly fixed? Also check the fuse in the plug. This is usually the first thing to check.

Posted on Jun 28, 2009

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I bought 18v cordless drill with power source 120 but my power source is 220, how can I charge it without causing damage to it.


Some power supplies have a little switch on them for either 220 or 120. See if yours has this. Also some power supplies have a notice that they are good for 120 or 220 volts and either 50 or 60 cycles. If yours is one of them then it will work however if yours is not one of them then it will immediately burn out the power supply as well as your drill.

Good luck

Feb 26, 2014 | Black & Decker Computers & Internet

1 Answer

Wiring diagram for 220 volt light with switch


ok here goes first what do you want to do? replace switch or what, all 220 volt lights have a switch, plug has 2 hots( one red-one black), then you have a white and a green, red and black are power, white is neutral and green is ground.whit goes all the way through to light, so does the green, switch controls power so red on one side of switch and black to other side, hopes this helps

Oct 15, 2011 | Home

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My lg 220c can't find my plantronics headset. it is on charged. a previously owned lg220c hooked to this headset, but not this phone


Place the headset into "Pairing" mode. The headset should be switched off. Press and hold the "Call Control" button---the button you use to switch the headset on or off---until the light on the 220 flashes alternately red and blue.

Then, do the following on your LG 220c:

1. From the main screen, please press the key below MENU. 2. Use the arrow keys to go to "Settings" and press OK. 3. Go to "Bluetooth" and press OK. 4. Now go to "Paired Devices" and press OK. 5. Press the key below the word "Search." If your phone prompts "Bluetooth is off. Turn power on to continue?" select "YES" and press OK. 6.Press the key below the word "Search." "New Search" will be highlighted. Press OK. 7.Wait until the list is populated with available devices.

Using your arrow keys, go to your Bluetooth® headset and press OK. If you are prompted for a passcode, please refer to your headset's user guide. 0000 is a commonly used passcode for headsets. Enter this number into your Straight Talk phone and press OK. Wait for the devices to pair.
8.To connect the devices, press OK. 9.To exit press the red PWR/END key.
Now your headset should be paired with your phone!

May 06, 2011 | Plantronics Explorer 220 Bluetooth Headset...

1 Answer

I have accidentaly switch my computer to 220 volts and well in fact it is intended for 110 volt. ans now i cant turn it on,Is there any solution on how to fix this problem?


If you did not connect the computer to a 220V power-source, i.e., you connected to a 110V source, then you probably are OK, except that the computer-components are probably only getting "half" the power that they normally get.

Turn the computer off, and reset the switch to 110V.
Turn the computer on, and it may start properly.

If all else fails, then take the computer to a qualified technician, for more trouble-shooting, i.e., replace the power-supply, or replace the motherboard, or may even replace _more_ than one component.

Feb 02, 2010 | Office Equipment & Supplies

1 Answer

My power switch won't turn on and a green light on the back of the computer is blinking when the red switch is on the 115 and stops when on the 225. What do you think is wrong?


First off, the red switch is for 155 or 220 volts and should not be adjusted or moved from its position.
Now, disconnect the unit from its power source and allow to set for 3 minutes.
Re-install your power connection and do not push the power switch.
Look in the rear of the unit at the power supply and see if you have a green light.
If so, push power and have fun.
If not, you will need to most likely replace the power supply.
Good luck..

Nov 24, 2009 | HP Compaq Presario SR1303wm PC Desktop

2 Answers

Help with Thermostat Wire Connection


White from power source to white of fan. Black from power source to black (top of thermostat). Black (bottom of thermostat) to black of fan..... 120v. connections.....gs

May 18, 2009 | Electrical Supplies

1 Answer

Compaq presario sr1115cl wont power up


dont u dare ever use 220 line on thes eon usa power u blow it ever time u turn it on at 220 v dont u dare do that not no reset switch erther u must now buy new power supllly ok

Oct 12, 2008 | Compaq Presario SR1120NX 2.66GHZ Tower w/...

1 Answer

AC Adaptor


If there isn't a switch to select 110 or 220 it should be ok , i had a charger like this and it worked well on 220 altrought I had to plug it with crocodiles clips

Oct 13, 2007 | Uniden BC92XLT Handheld Scanner

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