HP DV6-3030xt white screen, no lines

[nucleus]

I power it up and it shows white screen without any lines. no any sounds, power light is on, nothing flashes, voltage on every coil is ok, only +vga_core is 0.92v which is pretty low but in schematics is normal between 0.9v and 1v
nothing on external display, with or without its main display.
it seams to me like gpu problem, but not sure. anyone had something like this???

[nucleus]

Re: HP DV6-3030xt white screen, no lines

anyone ??? this is laptop very well known to all of you, someone must have similar failure?

[masud]

Re: HP DV6-3030xt white screen, no lines

graphics(GMCH) problem.
Reflow graphics chip.

masud.

[spidey]

Re: HP DV6-3030xt white screen, no lines

i fixed hundereds of dv series hp laptops, but didnt see that fault. if you fix it, let me know whats wrong. Btw, did you try to press caps lock to see if the light is on /off. ?

[nichella14]

Re: HP DV6-3030xt white screen, no lines

Nvidia ATI issue Black out

[nucleus]

Re: HP DV6-3030xt white screen, no lines

i fixed hundereds of dv series hp laptops, but didnt see that fault. if you fix it, let me know whats wrong. Btw, did you try to press caps lock to see if the light is on /off. ?

I tried it now and it won't stay ON, just blink when I press button, and goes off when I release it.

also what I noticed now, when keyboard is connected and when put charger in, led light near jack won't light, it just flash once and goes off, and motherboard won't power on. When remove keyboard and connect charger, light is on and motherboard powers on. Also when I first connect charger, then put keyboard it powers on and light on charger jack is on.

I did reflow it, but no changes. Maybe southbridge is foulty????

[spidey]

Re: HP DV6-3030xt white screen, no lines

How about always on voltages? and can you measure current consumption ?

[nucleus]

Re: HP DV6-3030xt white screen, no lines

How about always on voltages? and can you measure current consumption ?

on choke 3.34v and 5.14v ALW, current was a bit tricky to measure because of third control pin on hp chargers but i got it. power sequence is like this:

turned off: 0.11a
turned on: 1.7a, 1.8a, 2.1a, 1.950a and holds it

this is just motherboard with display no other devices.

does anyone know what is this thing with keyboard and charging, because I saw that on at least 5 hp laptops

[nucleus]

Re: HP DV6-3030xt white screen, no lines

does this means something to you??? I didn't watched power sequence for this model until now so I don't know how unusual is this.

maybe someone did

[spidey]

Re: HP DV6-3030xt white screen, no lines

on choke 3.34v and 5.14v ALW, current was a bit tricky to measure because of third control pin on hp chargers but i got it. power sequence is like this:

turned off: 0.11a
turned on: 1.7a, 1.8a, 2.1a, 1.950a and holds it

this is just motherboard with display no other devices.

does anyone know what is this thing with keyboard and charging, because I saw that on at least 5 hp laptops

0.11 is too high for standby. also the others, i think you have battery installed. please remove it and post the new results.

[nucleus]

Re: HP DV6-3030xt white screen, no lines

0.11 is too high for standby. also the others, i think you have battery installed. please remove it and post the new results.

my mistake 0.011A, no battery installed

[nucleus]

Re: HP DV6-3030xt white screen, no lines

my mistake 0.011A, no battery installed

ok, nobody knows for white screen, but somebody must know this thing with charging and keyboard. what is connection between charging and keyboard ???

[spidey]

Re: HP DV6-3030xt white screen, no lines

on choke 3.34v and 5.14v ALW, current was a bit tricky to measure because of third control pin on hp chargers but i got it. power sequence is like this:

turned off: 0.11a
turned on: 1.7a, 1.8a, 2.1a, 1.950a and holds it

this is just motherboard with display no other devices.

does anyone know what is this thing with keyboard and charging, because I saw that on at least 5 hp laptops

reflow your gpu.