HP 6735s video issue

[primoz1]

Hi again. I got this laptop, when I push power button, LCD screen blink a little, bud after just blink blue light on left side of keyboard and notnihg else not work, either not work with external monitor connected on.

The defect you can see on this connection. http://tinypic.com/r/23uakjq/5

I suspect the graphic chip, but Im not 100%

Any sugestions ? Thankyou.

[Nocta]

Re: HP 6735s video issue

I got 2 of those in the last 6 months. Both of them had the same problem: the graphic chip.

I did the reflow-reballing and worked again.

[mattbrad2]

Re: HP 6735s video issue

Yup, I'll 2nd that. GPU bad. These things are never ending.

[primoz1]

Re: HP 6735s video issue

Hi. I fix this with reflow grapfic chip.

Edit: Now after 2 days this laptop still work, but with very slow boot proces, it take a little over 1 minute from push power button to show HP logo screen.

Maybe I must do proper reball with leaded sodler balls.

[Nocta]

Re: HP 6735s video issue

Clean the RAM memories with a white eraser.
Check the hdd for bad sectors. (You can use Hiren's boot CD).

[primoz1]

Re: HP 6735s video issue

Hi. Do you mean Pencil Eraser rubber ?

I was wrong I use stopwatch and take 25 second, for first boot, if I reboot with ctrl-alt-del it take 5-10 second. Is that normal ?

[Nocta]

Re: HP 6735s video issue

Yes, I mean a pencil eraser but it MUST be a white one, not a red/blue one. Take a look at the attached file.

I guess it could be "normal" since the hdd is not stopped at all. Usually, when the initial screen takes too much to load is because of RAM or HDD failure. In third place, a bootable CD/DVD.

[primoz1]

Re: HP 6735s video issue

I clean ram contacts, and no changes. Maybe is problem because HDD is not present, and board search for it. (I buy laptop without HDD)