HP Touchscreen 610 no boot after power surge

[passete]

Hello to all,
I've bought this HP 610 series that don't boot after a storm power surge (what the previous owner said).
I have 3 PSU's, they are tested on others HP laptops, they all work.
The symptoms are:
When I press the ON switch, the power led turns ON, but fan don't spin and GPU, CPU stay Cold, there is no really power running I thing.
I have made some measures, I have 3.3V, 5V and 19V on some points.
I didn't find any schematic for free, only pay ones, I'm not engineer and have basic electric knowledge.
Motherboard reference :
HP ZN9
DA0ZN9MB6H0 Rev.H
I can post High resolutions pictures if asked.
Any help will be appreciated
Thanks

[Life Goes On]

Re: HP Touchscreen 610 no boot after power surge

You can check if voltage s present on the bios chip, if so you can flash the bios with programmer.

[atsio]

Re: HP Touchscreen 610 no boot after power surge

Try this

[passete]

Re: HP Touchscreen 610 no boot after power surge

You can check if voltage s present on the bios chip, if so you can flash the bios with programmer.

Do you know where is located the bios chip ?
I don't have clue what it looks like, sorry.

Thanks

[Life Goes On]

Re: HP Touchscreen 610 no boot after power surge

It look like this, http://www.ebay.com/itm/BIOS-Chip-HP...-/380584540988

[passete]

Re: HP Touchscreen 610 no boot after power surge

Try this

Thanks for the Manual atsio,
I'm not very good on reading this schematics, from the problem stated above, can you PLEASE, point me where to take a look ?
I'm willing to make a donation if necessary.
Thanks @life goes on, but there is a bunch of this kind of chip on the mobo.

[Life Goes On]

Re: HP Touchscreen 610 no boot after power surge

There s only 1 bios chip there, maybe the others look like, but the bios chip s wider, on the schematic you can find it on page34.

[atsio]

Re: HP Touchscreen 610 no boot after power surge

There are at least two spi roms, U4 for PCH and U6,U7 for KBC. You need to check and flash all of them.
Post high resolution pictures of both sides of the board.

[passete]

Re: HP Touchscreen 610 no boot after power surge

There s only 1 bios chip there, maybe the others look like, but the bios chip s wider, on the schematic you can find it on page34.

Ok, I will re check again !
if there is voltage, then I need to reflash the bios ?
I have ordered a

CH341A Series 24 EEPROM BIOS Writer 25 SPI routing LCD Flash USB Programmer

Will this programmer work ?
which software is required to achieve the reflash ?
and finally, do I reflash with the normal bios file available on the HP site ?

Sorry for all those questions, but I'm a beginner.
Thank you

[passete]

Re: HP Touchscreen 610 no boot after power surge

There are at least two spi roms, U4 for PCH and U6,U7 for KBC. You need to check and flash all of them.
Post high resolution pictures of both sides of the board.

Thank you for your help, I will post some pictures of the mobo.

[passete]

Re: HP Touchscreen 610 no boot after power surge

@atsio, here some pictures, if you need more detailed photos (from a specific zone), let me know I will use my usb microscope.
I still didn't located the Bios chip

[Life Goes On]

Re: HP Touchscreen 610 no boot after power surge

Picture nr.4

[atsio]

Re: HP Touchscreen 610 no boot after power surge

And PCH spi

[passete]

Re: HP Touchscreen 610 no boot after power surge

And PCH spi

I don't understand your picture, there is not a chip near what you wrote.
Thanks

[atsio]

Re: HP Touchscreen 610 no boot after power surge

Sorry reduced original resolution and the blue arrow with the blue box around U4 doesn't show (left and down of PCH SPI logo I wrote on picture)

[passete]

Re: HP Touchscreen 610 no boot after power surge

I have found 2 winbond chips, make some measures on both chips on standby and after pressing the ON switch, values stay the same.

[RJARRRPCGP]

Re: HP Touchscreen 610 no boot after power surge

Is the adapter making a repeated squealing sound? If true, probably a short on the mainboard.

Diodes are a suspect, if you have the above mentioned symptom.

If there's an LED lit, then skip the above.

[passete]

Re: HP Touchscreen 610 no boot after power surge

Is the adapter making a repeated squealing sound? If true, probably a short on the mainboard.

Diodes are a suspect, if you have the above mentioned symptom.

If there's an LED lit, then skip the above.

Nope, no noise with the 3 identical PSU's .
When I press the ON switch, the power LED turns ON, but nothing happens, no fan running and all bga's stay cold, like there is no power.

[Dumah Brazorf]

Re: HP Touchscreen 610 no boot after power surge

Connect the keyboard. Maybe it blinks something by the caps-lock led, if there is one.
Remove ram and video card and see if something change. Remove the cmos battery for a while to reset it.

[passete]

Re: HP Touchscreen 610 no boot after power surge

Connect the keyboard. Maybe it blinks something by the caps-lock led, if there is one.
Remove ram and video card and see if something change. Remove the cmos battery for a while to reset it.

Already done the above several times ... No change !
You can only connect a usb keyboard on this model, same for the mouse, no touchpad.

If I could read a schematic, maybe I could know where to measure to see if some voltages are missing, but I don't