Re: Asus S530U board x530un no charging and no power
i was thinking the same but without boardview or schematic or datasheet of that ic i wasn´t 100% sure.
i believe that the burn resistor is a 0 ohm resistor because have to pass the voltage for the small ic 8kb, that´s why i open the threath maybe somebody have the same board to measure values.
thank you for your help...
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Re: Asus S530U board x530un no charging and no power
hello mate
this ic tps 548 have to legs with 3.3v in the same rail of the burned resistor. i didn´t find datashhet for this ic so i really don´t now if there is something wrong with it. i have a few legs of it with 3.3v and i have about 7v in other leg.
best regards...
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Asus S530U board x530un no charging and no power
Hello Guys
i have this laptop that i am trying to fix.
i didn´t find any schematic or boardview for this board.
i opened the laptop and i did some checking and i have 5v, 3.3v and 1.2v, i saw a blow resistir but without schematic or boardview i dificult to know the value to replace it.
attached some pictures of the board and the blown resistor, maybe somebody have the same board and let me know the value of that resistor.
i would like to ask if someone have any idea wich ic are those near to that resistor.
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Re: samsung lt22c300ew - psu pslf560501a no power
one thing that i just realise now that is strange is....
the conector for tcon plugged i have no power in signal ps_on and without the connector for tcon i have about 7v but going up and down anyway.
do you guys can help me here.
best regards for both of you
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Re: samsung lt22c300ew - psu pslf560501a no power
hi again
i did check before the optocoupler and betwen pin 1 and 2 i have o.l in both direction and between pin 3 and 4 the same. then i did check the optocoupler from the other psu and i have the diode junction between pin 1 and 2 but didn´t fix it.
thank you for your help...
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Re: samsung lt22c300ew - psu pslf560501a no power
hello
i did check cm807 before and the voltage is jumping a lot aswell, i did order these capacitor because someone told me these capacitors usually goes bad. out of the board i test it and have 47uf and 0.8 esr but i did order anyway.
the resistor rm803 i did remove before and is about 0.3ohm.
the diode rm803 i believe i bad because pin 1 and 2 are anode and pin 3 cathode and between pin 1 and 3 i have about 1.8v in both directions. and between pin 2 and 3 i have about...
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samsung lt22c300ew - psu pslf560501a no power
hello guys
i will post the others psu codes maybe it´s easy to someone help: pd23a0q / bn44-00505a
i need help to try to repair this power supply unit when the, i am not a tecnician this is just a hobby and i am trying to learn and a friend ask me for help to try to repair his tv.
so when the tv arrive didn´t power so i check the psu and ad the a few damaged componentes: fuse_fp801s, bridge rectifier_bd801s, ceramic capacitor_cm804, power ic_str w6052s.
so i did replace all the componentes and now the power supply try to power up but...
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HP 15-n087ez - DAOU82MB6D0 REV:D - Loop ON and OFF
Hello Guys
I have this laptop and i am trying to repair.
i am using the original charger and the battery is charging and have the orange light. i did try another bios and replace the ram but didn´t help.
so i remove the board the check some things...
check the short to ground on the coils and none of them are
- PL9_375ohms, - PL10_42.9ohms, - PL8_43.1ohms, - PL15_96.4ohms, -PL13_180ohms, - PL21_362ohms
after press power button +3vs5 and +5vs5 are present, then i check for the signals mainon, suson and vron and all them goes up...
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Tablet Huawei MediaPad T5 AGS2-W09_Board-H103C_No power
Hello Guys
So i have this tablet and doesn´t power and not charching the battery.
i didn´t found any schematic for this board.
I though it was the charging ic BQ25601 i order a new one and i replace but didn´t solve the problem.
I have a ampmeter and i see that the resistance iscilate between 80ohms and 110ohms wich i believe is too much. with or without the battery is the same.
with ampmeter i check the consume and oscilate between 0.06a and 0.04a.
i tried to inject 5v in the usb port to check any short but isn´t...
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Re: New Members - please post your introductions here
Hello, i am Filipe and i am from from Portugal. Just registered and look forward to getting to know some of the people. I am not a electronics pro. just a hobby for me. So hope to have some guides from you guys. Thank you.
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