Laptop Repair In Hyderabad

says okay so if you look now acer laptop repair  we can see then by this this drawing that we've got the the DC jack so we've got the input on the DC jack so we should have 19 volts on the output of the DC jack then we should have 19 volts on the increment of this inductor and we also have 19 volts on the output of the inductor and then 19 volts on the input of the acer laptop service  fuse so you can see where we go in here we're just going along each compound and this marked on the drawing and testing so we're sony laptop service  going to test test it to this point here so this will be the DC jack coming in that's the negative rail and that's positive rail we don't need to worry about the the components in between these capacitors and resistors the only thing we need to need to be concerned with is the DC Jack the inductor the fuse and then  Dell laptop service we come across to this transistor the MOSFET so as you can see I've marked on the drawing the voltages in yellow here so we've got 19 volts coming out of the jack then got 19 volts coming into the inductor it then comes out of the inductor lenovo laptop service  we should have 19 volts and we should have 19 volts into the fuse 19 volts out in the fuse move along to the transistor and if you look on pin 3 we're looking for pin 3 on the transistor in this case they're all linked together so pins 1 2 & 3 are all joined together so we're looking for 19 volts at pins 3 2 & 1 and we're also hp laptop service  looking for 19 volts out of pins 5 6 7 & 8 ok 19 volts this stone comes into the ad pit ok so if we now look on the further on the drawing we're now looking to the ad pin bit become down and we go ad pin ADP in okay so we should have 19 volts that  lenovo laptop service comes along it comes down through this diode keep following it along and we've got DC in on pin number one so on you 16 we're looking for 19 volts at pin number one and then we go to the output then on pin 16 which would have  dell laptop service an output of 5 volts go along a bit further you then come up to this bit here which you've got this transistor so you should have 5 volts here then goes to hp laptop service  the DC n just move up to find the DC in DC in that pack to see ed so we've got the DC end which is then this one here at DC end 19 welts and and then we've got the V pack okay this is where it connects here on the cochlea not very well laid  acer laptop service out the spaz you'd see the V pack then comes through to f2 so we should have we should have 10 volts here now because of the voltage doubler it comes out of the charging chip 5 volts and then and to regulated 5 volts and then it uses a voltage doubler to give me 10 volts so that's basically it we then a pin at fuse f2 so  Laptop service we'll check into 10 volts turn box out and pin 110 volts now if we've got voltage to all of these places everything's good now for example if  laptop repairs we go back to the beginning and we would say we check for a voltage here at pin 1 out of the CNE level which is the D some of that and we haven't got 19 volts there then we suspect the DC jack or the power supply supply them DC jack now if we've got 19 volts there what we do is you move along then to the to the next part and laptop repairing  we'll test for 19 volts and we've got 19 volts on the coil we'll go to the other side of the coil or we haven't got 19 volts there and why haven't we got 19 volts because that coils gone but we've got if we had 19 volts there and what we do is you laptop keyboard repair  move along to the next bit which in this case is f1 so we've got a voltage going in check for a voltage L if we haven't got a voltage coming out obviously f1 is the problem if we have got a voltage coming out we then move along to the MOSFET and we check for 19 volts in and we're also looking for 19 volts out and so on and laptop repair  we'll just keep moving along to move back down to here so if we look the next component this means this step we should have 19 volts and we should have I think it's 19 volts coming out of this one yeah 19 volts all the way up to this double shocking diode which is d20 and we're also going to check for a voltage at this diode D 19 and out and we laptop repair services  check for a voltage here now if you've got a voltage here but we haven't got a voltage here then this chip is the problem the failed chip okay we should have a voltage in voltage out and it's the same with most components you should have a voltage in or a signal in and a signal out so we come along here and look and we should laptop repairs   have 5 volts in it so you sell  toshiba laptop repair 5 volts out there 5 volts 5 volts and then we go to the feedback this is where it doubles the voltage here this point and then we check again we should have 10 volts in this case here and if you've got 10 volts there but we haven't got it here then he says 2 and so on so it's basically just a case of checking the  best laptop repair components along along the circuit so what we'll do now I'll set up and get ready for testing now we'll put this video up in a couple of parts so we'll call this part 1 and part 2 to follow so thanks for watching if you like my videos best laptop repair  don't forget to Like and subscribe if you subscribe you'll get updates as and when we put new videos up so thanks for watching and look out for dell laptop repair  part two where we'll be testing the board testing the components and just checking for voltages so thanks for watching we'll see asus laptop repair  you again English (auto-generated)