HP G62 No Power- Dead

[kev4eva]

Good Day, want a few pointers as a seek to troubleshoot

HP G62 Intel- No power or lights ; no burns or obvious shorts on the board

Here is what i did so far;

Verified AC adapter /19.5 volts
No light from dc jack- disconnect & verify with meter/ 19.5volts in

Checked the first diode behind power connector on the board and it read ok no shorts.Check a few of the mosfets, read ok, thinking i may have overlooked a bad cap or resistor in the power in circuitry.Any ideas or schematics on this?
Will appreciate as i try to move forward with it.Will add pics shortly

[nichella14]

Re: HP G62 No Power- Dead

i repaired hundreds of g2 with the same problem like yours, mostly BIOS IC Problem

I just remove the
1. Bios IC
2. Plug in AC
3. Press power on button several times
4. unplug the AC
5. Put your bios IC back
6. and Turn in on again

[spidey]

Re: HP G62 No Power- Dead

did you check the middle pin ?

[kev4eva]

Re: HP G62 No Power- Dead

ok i will try your bios suggestion today and spidey, what did you say about the middle pin?

[kev4eva]

Re: HP G62 No Power- Dead

ok i will try your bios suggestion today and spidey, what did you say about the middle pin?

just tried the bios thing and removed the chip, that didnt work

[nichella14]

Re: HP G62 No Power- Dead

try spidey said, check middle pin voltage, or try other adapter
try to reset or remount IC,
if not work try to check Capacitor one by one,

[nichella14]

Re: HP G62 No Power- Dead

i have g62 here now hannstar j mv 6 94v-0 same problem

[kev4eva]

Re: HP G62 No Power- Dead

try spidey said, check middle pin voltage, or try other adapter
try to reset or remount IC,
if not work try to check Capacitor one by one,

checking those again and middle pin ok

[scobie_21]

Re: HP G62 No Power- Dead

I have had these unit before with faulty bios IC I just replaced with one I reprogrammed

[kev4eva]

Re: HP G62 No Power- Dead

I have had these unit before with faulty bios IC I just replaced with one I reprogrammed

if i remove one from another board what are the chances of it solving?

[scobie_21]

Re: HP G62 No Power- Dead

you will still need to flash it with latest g62 bios

[kev4eva]

Re: HP G62 No Power- Dead

you will still need to flash it with latest g62 bios

by using the bios re-programmer?

[scobie_21]

Re: HP G62 No Power- Dead

by using the bios re-programmer?

Yeah you can get cheap ones on ebay that will do the job or a more expensive Willem programmer.

[kev4eva]

Re: HP G62 No Power- Dead

Yeah you can get cheap ones on ebay that will do the job or a more expensive Willem programmer.

http://www.ebay.com/itm/PCB5-0E-Univ...item5656992e47
what you think about this one?

[kev4eva]

Re: HP G62 No Power- Dead





pics added

[scobie_21]

Re: HP G62 No Power- Dead

http://www.ebay.com/itm/PCB5-0E-Univ...item5656992e47
what you think about this one?

That would do but there should be some cheaper types like below. If you repair laptops or desktop motherboards you should have a bios programmer even just to rule out possible bios issue.

http://www.ebay.ie/itm/EZP2010-high-...item3378ee279e

[kev4eva]

Re: HP G62 No Power- Dead

delay a bit ordered a smart tweezer online with capacitance tester

[RobRocks]

Re: HP G62 No Power- Dead

Hi, its bios failure, i had it many times, the thing is that there are different bios files from the hp website, if you flash the wrong one it will still be dead (also no light at the power socket). Some of the files are not meant to be flashed directly with the programmer they are oversized, the rom file has to be exactly the same size of the bios memory.

[Am0rPHiA]

Re: HP G62 No Power- Dead

i have a couple of these boards with no power at all and no light on the dc socket, no signs of obvious burn or shorts, tried the bios chips but had no success, any ideas?