hp g62 010170100-600-g power on and immediatly power off

[kusal]

Re: hp g62 010170100-600-g power on and immediatly power off

same problem here without ram satay up if ram insert restarting continuasly change ram but no iffect any idia guys

[hkvaks]

Re: hp g62 010170100-600-g power on and immediatly power off

Im having exact same problem on the same m/board. Power on then immediate off (1sec) then repeats continuously.

[magnetepazzo]

Re: hp g62 010170100-600-g power on and immediatly power off

if you have pulse on one side, measure on the other side. Thats normal. All bigger coils are part of switching power mode power supply. Try the board without RAM. Then if the board not switch off immediately, try it with other memory modul.

I have tried with and without memory but nothing, you have a bios dump for try ? thanks

[alexeistukov]

Re: hp g62 010170100-600-g power on and immediatly power off

Check the USB con inside. If any nonground pin touch a shell(ground) of the con, the same simptom happens.

[alexeistukov]

Re: hp g62 010170100-600-g power on and immediatly power off

if you have pulse on one side, measure on the other side. Thats normal. All bigger coils are part of switching power mode power supply. Try the board without RAM. Then if the board not switch off immediately, try it with other memory modul.

[caspian]

Re: hp g62 010170100-600-g power on and immediatly power off

2.8v is strange. is there a pulse on this coil?
upload the schematics file to discover more.

[magnetepazzo]

Re: hp g62 010170100-600-g power on and immediatly power off

[caspian]

Re: hp g62 010170100-600-g power on and immediatly power off

I do not know about this method of measurement.
standard method: put black probe on GND and red probe on the point which you want to measure.
If you do this measurement, important faults may be discovered.
Assuming you measured correctly, 16,22v and 14,2v are bad voltages.
please report like this: L1021 = 16v.

[magnetepazzo]

Re: hp g62 010170100-600-g power on and immediatly power off

Hi friends I have measure at coil pin and measure 0V if I take positive from dc jack and negative on coil I measure 19V at laptop switch off and 16,22V on one coil and 14,2 on second coil at laptop switch on

[walupapz]

Re: hp g62 010170100-600-g power on and immediatly power off

if i found 0v on coils which part causing 0V? near that coil with 0V?

[caspian]

Re: hp g62 010170100-600-g power on and immediatly power off

bad voltage can be 0v or anything less or more than what is expected.

[walupapz]

Re: hp g62 010170100-600-g power on and immediatly power off

Dear magnetepazzo,
yes, measure voltage on those square components.

can u tell me sir the exact voltages to be read on those coils? what is the reading on those coil if bad?

[caspian]

Re: hp g62 010170100-600-g power on and immediatly power off

Dear magnetepazzo,
yes, measure voltage on those square components.

[mcplslg123]

Re: hp g62 010170100-600-g power on and immediatly power off

Search for HP650 or HP 2000 and you will get many bios dumps in this forum. Your mb is same.

[magnetepazzo]

Re: hp g62 010170100-600-g power on and immediatly power off

[caspian]

Re: hp g62 010170100-600-g power on and immediatly power off

when the laptop is on, measure voltages on all coils on the mainboard.

[magnetepazzo]

Re: hp g62 010170100-600-g power on and immediatly power off

This is the mb code 010170100-600-g I have changed the power adaptor whit a brand new but nothing have changed. How part of the mb I can check ? It's possible say me a chip probably causes this problem ? Thanks

[mcplslg123]

Re: hp g62 010170100-600-g power on and immediatly power off

MB Code??? Does it has ATI Graphics??

[caspian]

Re: hp g62 010170100-600-g power on and immediatly power off

it does not seem a Bios issue. it is probably something like a power problem. but I am not sure. the only way is to check mainboard components according to schematics. first check the AC adapter as recommended in post 2.

[magnetepazzo]

Re: hp g62 010170100-600-g power on and immediatly power off

Yes, nothing chip or component are hot, the laptop power on and off continually when the problem appeared the handset was running properly, I unplugged the power cord, the battery was plugged in and the screen disinked and the buzzer sounded very loud. when I turned off the laptop and restarted it started to do this. Help :-(