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From: bstretch on 12 Apr 2008 20:13
I bought a used LG Phillips SXGA+ 15" LCD screen (pulled from a HP
NX6110) to replace the smashed LG Phillips XGA screen on the HP NX6110
I'm refurbishing. It didn't quite work: only every other column gets
displayed, or something like that, a bit fuzzy too. I suspect that I
need the monitor cable specific to the SXGA+ screens instead of the
XGA cable I reused (which is marked as such). I flashed in the latest
BIOS that added support for several new panels to no effect. WinXP
recognizes the screen as 1400x1050 res. I'm also wondering if the
higher res screen uses a different inverter?

Am I guessing right or is there something else I should look for?
From: bstretch on 14 Apr 2008 15:12
On Apr 12, 8:13 pm, bstre...(a)mindspring.com wrote:
> I bought a used LG Phillips SXGA+ 15" LCD screen (pulled from a HP
> NX6110) to replace the smashed LG Phillips XGA screen on the HP NX6110
> I'm refurbishing.  It didn't quite work: only every other column gets
> displayed, or something like that, a bit fuzzy too.  I suspect that I
> need the monitor cable specific to the SXGA+ screens instead of the
> XGA cable I reused (which is marked as such).  I flashed in the latest
> BIOS that added support for several new panels to no effect.  WinXP
> recognizes the screen as 1400x1050 res.  I'm also wondering if the
> higher res screen uses a different inverter?
>
> Am I guessing right or is there something else I should look for?

The vendor thinks the screen is simply bad so he's sending me a new
one. He says that the SXGA+ screens use the same cables and inverters
as the XGA screens. I was overthinking things. I can see where the
problem with the current screen could have been missed if it wasn't
tested at full res, where it's much more obvious than it is in
textmode (BIOS startup, etc). Hopefully I'll get the new screen
Wednesday.
From: Quaoar on 14 Apr 2008 20:03
bstretch(a)mindspring.com wrote:
> I bought a used LG Phillips SXGA+ 15" LCD screen (pulled from a HP
> NX6110) to replace the smashed LG Phillips XGA screen on the HP NX6110
> I'm refurbishing. It didn't quite work: only every other column gets
> displayed, or something like that, a bit fuzzy too. I suspect that I
> need the monitor cable specific to the SXGA+ screens instead of the
> XGA cable I reused (which is marked as such). I flashed in the latest
> BIOS that added support for several new panels to no effect. WinXP
> recognizes the screen as 1400x1050 res. I'm also wondering if the
> higher res screen uses a different inverter?
>
> Am I guessing right or is there something else I should look for?

There is often (usually, almost always?) an eight-bit dip switch on the
mainboard that selects the notebook screen default resolution. Since
you've had the case open, look for it, then see if you can find any info
on what the bit settings are for the higher resolution screen. If the
switch is there, it is "only" 256 trials to find the correct setting.

Q
From: bstretch on 14 Apr 2008 22:54
On Apr 14, 8:03 pm, Quaoar <qua...(a)marcabfleet.net> wrote:
> bstre...(a)mindspring.com wrote:
> > I bought a used LG Phillips SXGA+ 15" LCD screen (pulled from a HP
> > NX6110) to replace the smashed LG Phillips XGA screen on the HP NX6110
> > I'm refurbishing.  It didn't quite work: only every other column gets
> > displayed, or something like that, a bit fuzzy too.  I suspect that I
> > need the monitor cable specific to the SXGA+ screens instead of the
> > XGA cable I reused (which is marked as such).  I flashed in the latest
> > BIOS that added support for several new panels to no effect.  WinXP
> > recognizes the screen as 1400x1050 res.  I'm also wondering if the
> > higher res screen uses a different inverter?
>
> > Am I guessing right or is there something else I should look for?
>
> There is often (usually, almost always?) an eight-bit dip switch on the
> mainboard that selects the notebook screen default resolution.  Since
> you've had the case open, look for it, then see if you can find any info
> on what the bit settings are for the higher resolution screen. If the
> switch is there, it is "only" 256 trials to find the correct setting.
>
> Q

Hmm... I haven't found that yet, but the BIOS release notes say that
the BIOS has been updated several times to support new LCD panels.
Perhaps resolution setting is handled in software now? Like what
they've done with CPU multiplier and voltage settings. Used to be you
just flipped a few DIP switches when a new CPU came along, now your
BIOS either knows how to recognize the new core stepping or you're
hosed.

The vendor thinks that the panel is simply bad so he's sending me
another one. He's probably right. He did confirm that I have the
right cable and inverter.
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