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Canon AC Adaptor K30290 240 v supply Printer was powering up then lost all power on start up, 240v available , tested at extra low voltage terminal,with only 10 to 12 volts output and as low as 7 volts, suspect adapter transformer us, can you please advise if correct

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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  • 21 Answers

SOURCE: HP printer AC power adaptor 0950-4399

I just get one from www.order-bulk.com my print is working now

Posted on Nov 19, 2009

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SOURCE: Lost ac power supply adaptor for Mli 190 speakers

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Posted on Jan 22, 2007

Benimur
  • 6966 Answers

SOURCE: no output from power supply

Hi,

I am assuming that you are very familiar with electronic circuitry and components, use of a DVM and a soldering iron. In the absence of a schematic diagram, and since you have perform initial voltage checks, perhaps you can wing it. Your "brick" will have to follow the basic design of an SMPS (switch mode power supply). Simply stated,an SMPS is an AC to DC to high freq AC then to lo V DC converter. Per your post, you have checked that there is DC (B+) from the AC mains, then what is needed is to check if there is oscillation to produce the high freq AC. Often design calls for an optical coupler, a small rectangular looking component with four pins, two at each end. This is nothing more than a LED and a Light Dependent transistor. Its function is to switch/trigger on the oscillation (and therefore start the SMPS producing the lo B+s).

Again, since there is no readily available schematic diagram, might I suggest that you post back the part numbers of the ICs and transistors. What we can do is pull out their spec/data sheets and/or application diagrams. Such would give us a general idea of the working voltages at what pins and what each component is supposed to do. Example, let us say your power supply uses a 817A/0635 opti coupler and/or an SG5841DZ controller IC, then we can search for them as initially described.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Sep 30, 2008

patreg
  • 152 Answers

SOURCE: dell power supply ADP-220AB B output schematic

It may be possible that your adapter does not receive the rated power it should receive. You may have plugged your adapter to a 110 v outlet when the required input is 220 volts. See your adapter for the specific requirements.

Posted on Oct 26, 2008

  • 1 Answer

SOURCE: Mikomi TV power pack/transformer/AC adapter replacement

Power Plus Online sell a replacement ac adapter 'PSU 1' at www.power-plus.tv we purchased one recently for £29.95 and this works fine.

Regards Steve

Posted on Dec 30, 2008

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1 Answer

Connected alesis sr16 with alesis 110v power supply.to 240v mains...........briefly powered up and then nothing. Have I "fried" the adapter or the sr16?


Look carefully at the adaptor and see if it takes any voltage besides 110 (it will say in very tiny print, you will need a magnifying glass). if it does NOT say 220V or 240V then you friend the adaptor. Get another adaptor - most are "dual" voltage meaning they run in the U.S. or overseas.

Also check for "polarity" (which part of your plug is + or - ).

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You can use a multi voltage mains adapter for your Omron. These are available at electronic stores ot on the Internet. Make sure it is a DC adapter and switch to 6 volts also make sure the power connector is set correctly to the polarity of the Omron power socket.

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I am looking for an ac adapter for a pixma mp600


I am not an expert on this, but my experience is:

I dont have an AC-DC adapter on my MP600, its a two pin mains lead directly inserted into the printer.

I am in the UK and the mains electricity is 230-240V @ 50Htz.

If you have a model that requires a power adaptor then you could buy a generic one as a replacement but make sure that the 'Current rating' (in amps or millamps) and voltage ratings match the old adaptor or you could set fire to your printer/home.

Good luck

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My x3350 will not power up could it be the mains lead/AC adaptor


Please go through the following checklist:
  • Make sure the power cord is plugged in securely and directly to the power outlet. Power surge protectors can draw power away from the printer.
  • Disconnect the power cord from the power outlet and the back of the printer and then reconnect it.
  • If there is access to a voltmeter, test the power supply to ensure that it registering the correct amount of voltage (most Lexmark printers have a 30Volt output).
  • Make sure the correct power supply is connected to the printer.

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I have a Maxtor external driver and the AC adapter is not working. I need a new AC adapter and local stores do not have it. How can you help?


There are "generic" power supplies that might meet your needs.

This is a response I gave to another user who had a different external HDD and needed a power supply.

The hard drive unit itself should be able to supply you with the required DC input voltage (hopefully there is some kind of label on the enclosure).

You could try one of these or something similar. It comes with 6 interchangeable heads and has adjustable DC voltage. This is just one of many available.

http://www.amazon.com/Hosa-ACD477-100-240V-Voltage-Adaptor/dp/B000Z31G3M

I cannot guarantee any of these supplied heads will fit your particular drive (same with the dc voltage). Some local retailers
often have these types of adapters and you might be able to determine what size you need by looking at one. Most of the

Externall HDD need 12VDC and 18+ watts of power.

Here is an online site also.

www.12Vadapters.com

I have used DC units similar to these in the past when I have lost a power supply.

Hopefully with a minimum of effort you can get a working solution.

Feb 24, 2011 | Maxtor Computers & Internet

1 Answer

Vmx


looks like you need to replace the AC adaptor , test the AC adaptor with a multimeter to check Voltage , if there is Voltage reading?? then you need to replace the battery. hope this helps & please rate, AJ

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DVD player Power supply problem


Hey Maharatha,

In order to use this DVD player overseas, a foreign voltage converter may be all that you need to ensure that it functions properly. Many major retailers (including your local Best Buy™ store) should sell 240V to 120V voltage converters, but the brands available and product pricing may vary from store to store location.

If you would prefer to avoid looking for a voltage adaptor, remember that Best Buy™ stores do offer a 30-day return and exchange period for all DVD players we sell. Once beyond this point however, we would be unable to take the product back.

Additionally, please keep in mind that the vast majority of electronics that are sold within the United States will be designed to function using a 120V/60Hz electrical current. While some products may exist that are able to support both the U.S. and Indian electrical standards, it cannot be guaranteed that your local store will carry such an item in stock.

Hope this helps you out.

Sincerely,
Aaron
Go Ahead. Use Us.

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