Re-flowing an onboard graphics chip - PC Gurus

[GreiginFife]

So I have an old HP DV9000 laptop thats been sitting for ages with a common HP fault, the graphics chip overheated due to terrible design.
Tonight I stripped it and set about re-flowing the chipset. Done that and now when it starts up its giving me the HP boot logo which it never before, but there are vertical lines through the image. Also Operating System Not Found is coming up as Operating System Nod Feond...

Any ideas? Do I need to reflow it again?

 

[G1BB0]

could well be just the ribbon cable not seated properly to the display? if thats all hunky dory then you could try again, nowt to lose

 

[GreiginFife]

could well be just the ribbon cable not seated properly to the display? if thats all hunky dory then you could try again, nowt to lose

Its a keyed block connector to the panel Steve. Massive step forward that I am getting the HP logo but the lines aint right and it shouldnt be dyslexic.

 

[G1BB0]

have only stripped 2 laptops to replace keyboards and touchpad ribbon so never messed with screens. It sounds like a corrupt video output issue. How did you reflow? (In the oven in a towel is a fave apparently lol)

 

[G1BB0]

have you got a monitor you could hook up via vga?

 

[brendy]

Sounds like video memory could be damaged, you could try doing it again, what have you got to lose.
Spare screen helps when there is doubt over the functionality of the panel itself.

have you got a monitor you could hook up via vga?

 

[GreiginFife]

Its defo a video chip issue. Known fault on the 9000 series. IIRC there is a US class action against HP due to it. Panel itself is still A1.
Steve, reflowed using a heat gun and tin foil.

 

[PhilTheFragger]

You could try using it as a door stop, or a paper weight

Sounds like its toast

Fragger

 

[GreiginFife]

You could try using it as a door stop, or a paper weight

Sounds like its toast

Fragger

What makes you say that Phil? Its gone from a back lit black screen on boot to giving an image. Just need to figure out the blue lines...

 

[chrisd]

You could tie the throngle lever to the upvalve spungler generator and see if the thirgel bearing aligns with the dodeca module, that might sort it out!


Well you started the soppy talk first!

 

[happyhacker]

Blue artifacts from the graphics chip are normally associated with bad memory modules on the said board. Not sure much more can be done with them on a laptop?

 

[GreiginFife]

Blue artifacts from the graphics chip are normally associated with bad memory modules on the said board. Not sure much more can be done with them on a laptop?

Have tried one last reflow and put a copper shim on it with some arctic silver. Didnt get a chance to test it though so will see tomorrow if all that can be done has been done.

 

[SocketRocket]

Have tried one last reflow and put a copper shim on it with some arctic silver. Didnt get a chance to test it though so will see tomorrow if all that can be done has been done.

Yes, that should do it

Failing that you could strengthen your grip.

 

[PhilTheFragger]

Blue artifacts from the graphics chip are normally associated with bad memory modules on the said board. Not sure much more can be done with them on a laptop?

Wot he said, unless you fancy a graphics chip transplant with micro soldering hundreds of little connections
Valiant effort though

Fragger

 

[GreiginFife]

Thought I would add a wee update on this. After doing the reflow somewhat unsucessfully with a heat gun, I acquired a micro torch and did the reflow again and... Perfecto. Blue artefacts all gone and system running really well.

Well spent £15 on the micro torch.

 

[brendy]

Good man yerself, bet your happier than a pig in the proverbial matey, I love it when it comes together against the odds.

 

[GreiginFife]

Good man yerself, bet your happier than a pig in the proverbial matey, I love it when it comes together against the odds.

Damn right mate. £800 laptop saved by £15 torch. Glad I persevered with it.

 

[PhilTheFragger]

If I was wearing a hat, I'd eat it
Result , fancy a job?

 

[GreiginFife]

If I was wearing a hat, I'd eat it
Result , fancy a job?

Will class it as a result after a few days use. HP have made a mess of the design on this sharing a heatsink between CPU and GPU.. Idiocy.

A job? Aye, no bother. Lol