Dell Laptop Repair In Hyderabad

This post is Explained  acer laptop service in Hyderabad we're going to be looking at this power supply unit okay this is your power supply for your average computer with PC this one you switch on the computer hp laptop service in Hyderabad  nothing happens dead so let's take it apart and have a quick look at it on the bottom you'll find full screws to remove the top lenovo laptop service center in Hyderabad  cover so when we work in on power supply units always make sure it's disconnected because you don't want to have any Laptop services in Hyderabad  accidents touching the mains okay so generally working inside the these power supplies there is there's always an a fuse and inline fuse if there is nothing else obviously burnt and it's just it's just pop the fuse through a surge laptop repair center in hyderabad  then you can replace the fuse never Bridget always replace it with another fuse and see how it goes if you see something is burnt Dell laptop service in Hyderabad  and it's smelling don't even bother replacing the fuse the machine is worth the power supply is burnt and just junk it what I always do if the fuse is okay and nothing is burnt nothing is smelling we come to this we come to  dell service center in Hyderabad  these capacitors here and every power supply you'll have some some capacitors okay so what we're looking for today are some capacitors which have been  acer service center in Hyderabad swollen they don't at the top you'll actually see they're puffed up so here's an example of a bad capacitor okay it's swollen at the top and it's leaking okay and if you put it down on a flat surface you see it cannot it won't even Laptop Software’s or anti-virus installation  stand up okay I have a capacitance meter here which we can which I used to test the capacitors so this one says that apple laptop service  in Hyderabad  it should be two thousand two hundred microfarads the negative is always inside that has the stripe the band and you can test it and this one is about 800 so that's an example of a bad cap so what we do is remove Toshiba service center in Hyderabad   any swollen caps from the board test them to make sure that they are bad replace them with the same value capacitors but of a higher voltage for example the 16 volts if you put in 20 or 25 volts as long as the microphones are the same and maybe we can make asus laptop service  in Hyderabad  a repair on this power supply unit for a couple of dollars okay so let's get the board out identify the bad capacitors and laptop repair centre in Hyderabad  replace them you one two caps at all swollen and are leaking and a third cap yeah which is leaking which is swollen so we're going to install the these three caps replace them with the equivalents okay so this just uh check out hp laptop service center Hyderabad  these these offending capacitors right so that's the first one see it's all domed sleeking right so this this capacitor is valued at a thousand microfarads ten volts getting a reading of 369 set up a thousand so there is a classic example of a bed cap okay so on the sony laptop service in Hyderabad  board there will be a number this is C 15 it stands for the best of the 15 make a note of that so when we take out whole befooling the Laptop service in Hyderabad  offending caps we make sure the right caps the right valued capacitors were back in the right place you okay this one even though it's a little bit darker on lenovo laptop service in Hyderabad  the top that it is giving me a thousand but the path is read about sense it's this is domed but swollen I'm just going to go ahead and replace that one as well okay so let's find some replacements caps right so I found the three replacement capacitors I've tested them laptop spares and service center in Hyderabad  they're giving the correct correct value so let's resolve those back into the board and give it a test and see if we've made it repay the capacitors are polarized on the on the actual circuit board where you've taken them out you will cheap laptop repair in hyderabad  see on the circle you will see one side it has a line or a stripe that shows you on where is the negative on every capacitor there is a band going down one side of them that shows you the negative okay so that's very important make sure you get sony laptop service center in Hyderabad them in they'll wrote the right way around you okay so once you put your new capacitor solder and make sure you've got hp laptop service center in Hyderabad  the make sure you've got the polarity the right way around okay so this one looks good so let's give this one a test you okay so let's give it some mains Magadan right on you connected here you'll find only one green wire okay so if we bridge the green wire with the black the black towards the inside of dell laptop service center in Hyderabad  the connector that is the same as power on from the PC so when you do that your fan should plot to turn right as you can see this fan is turning will will mount this inside a PC give it a test run but it looks like replacing those capacitors laptop service center in Hyderabad   as a as ended up being a fix we do not need to replace this power supply so thanks for watching remember there's always a fix

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