Question about Dell (0726C) 330-Watt Power Supply

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Power supply is not working this smps sulotion ( problum ) which this component repairing sulotion

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You must look at the diode or the resistor if the its working....

note: pls open first the Power supply and test it with the tester: then jumper it with the color green and black

Posted on Oct 13, 2010

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1 Answer

Power board problum


Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

May 04, 2016 | Televison & Video

1 Answer

Samsung tv wont turn on


Fault in the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
There are circuit diagrams [schematics] to some model power supply boards to Samsung. BN***** Series SMPS. Check it, and try to repair if you're sound in electronics, and has previous work experience in repairing the SMPS power supplies.

Feb 25, 2015 | Samsung Televison & Video

1 Answer

My PIXMA MP970 printer abruptly lost power. is it due to fuse problem and where is the fuse box?


Dear
The printer has the step down SMPS which supply the low voltage (generally 24V DC to the other component. It contains high voltage risk also the high frequency. Sound knowledge is required while repairing the SMPS also appropriate precaution. If somebody is present having electrical knowledge during repair is better.

First disconnect the electricity supply cable from the printer
open the smps, check visually for any physical abnormality of individual component, then check the fuse for open,if its open check the MOV,mosfet,capacitor,bridge/zener diodes for short if found replace with same value,
take a series lamp of 15W incandescent bulb, connect the smps, check the voltage at secondary output. utmost care should be taken with attention of co-worker while checking live circuit.
If there is no voltage, check primary component at area of PWM IC /replace PWM ic (smd).

Again FATAL ELECTRICAL SHOCK AND FIRE MAY HAPPEN IF CARE NOT TAKEN.

Thanks.

Feb 13, 2015 | Canon PIXMA MP970 InkJet Printer

2 Answers

When I try to charge the battery in my Cardioline delta 1 Plus machine, it says "supply failure" and it also will not run on outlet power.


hi,
You have to check the power supply of you machine. Normally it will be a SMPS (Switch Mode Power Supply). If the SMPS is faulty then the machine will not work on outlet power and also will not charge the battery. That's why it displays supply failure. Check the SMPS if available then replace the same. For repairing the same can only done by an experience person in electronics. Because there are high voltage areas in the SMPS. So if you need to repair the same consult some one who is experienced in it.
ok

Apr 26, 2011 | Medical

1 Answer

The laptop won't turn on


disconnect the power supply measure the o/p voltage by meter if no o/p voltage then replace the adapter if you are technical person then open the adapter and chech whether fuse is blown or not any loose contact or not.smps can be repaired by checking the component

Mar 15, 2010 | Dell (C35096003) 350-Watt Power Supply

2 Answers

I have a D946GZIS motherboard. It does not boot whenever i switch it on and press the power button. Also the power led is not glowing. What must be the problem..? pls help ..


Starting at the begining. The wall socket, the plug, the cable, the power socket on the SMPS at the back of your PC, the SMPS, the Output connectors from the SMPS to the motherboard. The power LED not glowing means that the power is not reaching the motherboard. Disconnect and reconnect the power connector on the motherboard. start. No start. Does the fan on the SMPS work? If yes then all components before the SMPS are doing fine. If no then most likely connection socket power cable to the SMPS may be the culprit. This has a lot of load on it. The PC and the monitor both take power from this socket. the answer to your problem lies in the answer to my question whether the fan starts in the SMPS or not. If yes then there is no output from the SMPS and the SMPS need to be given the due attention and if no then there is no power input to the SMPS and various cables and socketc need that attention. In case you need to and can remove and open the SMPS look for bulged or burst capacitors. If found, replace them. Those round cylindrical components.

Nov 27, 2009 | Intel D946GZIS Motherboard

2 Answers

Picture turns off after 1 second. Power supply appears to on.


morrfl, All lcd tv's (plasma & fluorescent lamp backlighted) have "smart" power supplys (ac line to dc) that are called "switch-mode-power-supplys" that can detect FAULTS with other circuits or with themselves and will go into what is known as SHUTDOWN-MODE when a FAULT CONDITION is detected. The SMPS does this to protect against having a catastrophic nonrecoverable failure! e.g. sparks, smoke, fire. There are many reasons that LCD tv's go into shutdown! However, your set is a viable candidate for repair. When you stated "picture turns off after 1 second" means it still has the capability of displaying information on the LCD panel! But don't do anything just yet about fixing it. Check the availibility of a replacement SMPS number DPS-336AP. The drop-in SMPS could have same problem as the current one because nobody has made the determination of the ROOT CAUSE of failure for this SMPS. All they know is that they fail!! You will need to read all the posts here on fixya and elsewhere to maybe???? find out ROOT CAUSE and exactly what component(s) fail and more importantly WHY! It is now 2009 and these LVM-37W1 units have been failing by the hundreds because of SMPS failures since 2007 or 8 ! Yet nobody has investigated to COMPONENT LEVEL why the SMPS fails. Well, all I can say is good luck guy. If you do manage to get it up and running again I would certainly like to hear back from you. try me at lmistyrel@aim.com or here on fixya. I'm 12fixlouie. Hope this was of some use! If yes please rate on fixya.

Nov 11, 2009 | Westinghouse LVM-37w1 37 in. HD-Ready LCD...

5 Answers

450W ATX SMPS of Intex


sir all smps can be reapired using indian jugar technique. first of all see twi diods under the burnt transistors check them they are short then check the capacitors if they are not leaky or pregnant then see bridge reactifier change all that looks short or open then replace all and the transistors with 13007 transistors(jugad) be careful that 13007 must be isolated from heat sink that means metal part must be fixed to them but not short to them . replace the fuse with 2 ampere fuse (for safety) ..... have fun

Jan 21, 2009 | ASUS PSU | A-45GA 450W RT (A45GA) Power...

1 Answer

Sony DVP SMPS unit fault


Hello,
You can get complete power supply as one part from Sony. You can't repair it on component level because components are not available.

Jul 18, 2008 | Sony DVP-NS575P DVD Player

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