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A31p display panel issues

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martin_boro
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A31p display panel issues

#1 Post by martin_boro » Fri May 31, 2019 2:08 pm

Long story short, I have three A31Ps. One is pretty much built to my liking (maxed out) and works pretty well. I wanted to put together a second good notebook from the remaining two, but I got some "issues".

The build itself went pretty well, everything worked well, but after ~5 minutes, the backlight seemingly died. I tried replacing the inverter, replugging all of the cables, but nothing helped.
The GPU on it works fine, with no glitches. So it looks like the backlight itself is bad and I have to replace the panel.
Unfortunately, the second panel isn't much better and has reddish tint right after turning on and returns to normal over time. So I don't know how much time it has left.

Any ideas on how to fix it?
The Collection: T22, T23(SXGA+), A21p, X24, A31p, X32, T42p, Z61p, X301
The WIP: 701CS, T30, W700

ajkula66
SuperUserGeorge
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Re: A31p display panel issues

#2 Post by ajkula66 » Fri May 31, 2019 2:16 pm

martin_boro wrote:
Fri May 31, 2019 2:08 pm

Any ideas on how to fix it?
You can replace the backlight itself (CCFL), there's a guide somewhere on this forum written by RealBlackStuff. Or you can swap in a replacement panel, which is likely going to be very difficult to source.

Good luck.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

FlexView AARP club members:A31p, T43pSF, X60T

Abused daily: T520, X200s


PMs requesting personal tech support will be ignored.

martin_boro
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Location: Bratislava, SK

Re: A31p display panel issues

#3 Post by martin_boro » Fri May 31, 2019 2:37 pm

Thanks for the quick response.

That looks like a PITA job, but hey, at least I can't break it more :D
Any idea what are the specs of the tube I need? And a reliable place to buy it?

Also, would it be possible to replace it with someting more reliable, like LEDs?
The Collection: T22, T23(SXGA+), A21p, X24, A31p, X32, T42p, Z61p, X301
The WIP: 701CS, T30, W700

ajkula66
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Re: A31p display panel issues

#4 Post by ajkula66 » Fri May 31, 2019 2:56 pm

martin_boro wrote:
Fri May 31, 2019 2:37 pm

Any idea what are the specs of the tube I need? And a reliable place to buy it?
No clue, but I'm certain that someone with knowledge of the process will chime in sooner or later.
Also, would it be possible to replace it with someting more reliable, like LEDs?
I believe so.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

FlexView AARP club members:A31p, T43pSF, X60T

Abused daily: T520, X200s


PMs requesting personal tech support will be ignored.

Bondi
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Re: A31p display panel issues

#5 Post by Bondi » Mon Jun 03, 2019 3:42 am

CCFL repalcement guide is here. It's for A31, A31p should be similar. https://web.archive.org/web/20130302110 ... &Itemid=50
And here ia an old thread on the topic /viewtopic.php?t=64253
Thinkpads: 330C, 360CE, 560, 755CD, 760LD, 760EL, A21p, A31p, X60s, X230

martin_boro
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Joined: Sat Dec 22, 2018 3:34 am
Location: Bratislava, SK

Re: A31p display panel issues

#6 Post by martin_boro » Mon Jun 03, 2019 4:42 am

Thanks for the tips.

Also, a weird thing happened. The backlight on the good notebook failed too :(.
Is there a possibility that it's caused by something different? I mean two backlights failed on two different panels within four days?

And how much "runtime" can I expect from the new CCFLs?
The Collection: T22, T23(SXGA+), A21p, X24, A31p, X32, T42p, Z61p, X301
The WIP: 701CS, T30, W700

Bondi
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Re: A31p display panel issues

#7 Post by Bondi » Mon Jun 03, 2019 5:27 am

Guess they both failed due to age. I think you mentioned that the second one was already reddish. This is a symptom of coming death. According to my experience backlight failure on A31 series is very common. I have one with reddish backlight, the one I got for replacement had dark areas on the sides. Looks like these machines are heavily used during their lives and appear on the secondary market only when something goes out of order.
Re the lifetime of a CCFL tube - it's around 15000 hours.
Thinkpads: 330C, 360CE, 560, 755CD, 760LD, 760EL, A21p, A31p, X60s, X230

kfzhu1229
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Re: A31p display panel issues

#8 Post by kfzhu1229 » Mon Jun 03, 2019 4:16 pm

Bondi wrote:
Mon Jun 03, 2019 5:27 am
Looks like these machines are heavily used during their lives and appear on the secondary market only when something goes out of order.
Well from my experience, I purchased a brand new IDTech UXGA panel for A3xp series and its backlight is also dead right on arrival. Purchased more of those UXGA panels used and their backlight are all dead. From my sample size of 4, those screens backlight are just not very durable. I followed the guide and replaced the backlight from all of them. Bought a lot of 3 CCFL tubes and extracted one from a working 15" XGA display. MAKE SURE TO SLIDE THE CCFL TUBE OUT ON THE SIDE INSTEAD OF SEPARATING THE ENTIRE SCREEN AND LIFT THE TUBE OUT OF THE SLOT, otherwise you end up with all sorts of issues with dusting, uneven backlight and having a hard time assembling the screen!
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RealBlackStuff
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Re: A31p display panel issues

#9 Post by RealBlackStuff » Tue Jun 04, 2019 5:06 am

Read my post viewtopic.php?f=31&t=88991 from a few years ago.
It'll describe the A31p CCFL-swap and is quite easy (at least for me).
Lovely day for a Guinness! (the Real Black Stuff). And pigs CAN fly!
Check out The Boardroom for Parts, Mods and Other Services.

ajkula66
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Re: A31p display panel issues

#10 Post by ajkula66 » Tue Jun 04, 2019 9:11 am

kfzhu1229 wrote:
Mon Jun 03, 2019 4:16 pm
Bondi wrote:
Mon Jun 03, 2019 5:27 am
Looks like these machines are heavily used during their lives and appear on the secondary market only when something goes out of order.
Well from my experience, I purchased a brand new IDTech UXGA panel for A3xp series and its backlight is also dead right on arrival. Purchased more of those UXGA panels used and their backlight are all dead. From my sample size of 4, those screens backlight are just not very durable.
Let's also not forget how old these systems are...the youngest one will be due for a "sweet 16" party this year.

As for a "brand new" ID Tech panel for A3x series...I don't believe I've seen one of those in many years. Probably a decade or so.
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

FlexView AARP club members:A31p, T43pSF, X60T

Abused daily: T520, X200s


PMs requesting personal tech support will be ignored.

martin_boro
Posts: 17
Joined: Sat Dec 22, 2018 3:34 am
Location: Bratislava, SK

Re: A31p display panel issues

#11 Post by martin_boro » Tue Jun 04, 2019 5:31 pm

RealBlackStuff wrote:
Tue Jun 04, 2019 5:06 am
Read my post viewtopic.php?f=31&t=88991 from a few years ago.
It'll describe the A31p CCFL-swap and is quite easy (at least for me).
Thanks. I've already read it when Ajkula66 posted the tip.

As for "brand new" panels, just the shipping would be most likely more than the notebook is worth :).

The only thing remains buying the lamps.
In the guide thread, there are some links to 305*2.0mm lamps, however most of the e-shops are US based.
How is ebay with "reliability"? It would cut the costs significantly.
The Collection: T22, T23(SXGA+), A21p, X24, A31p, X32, T42p, Z61p, X301
The WIP: 701CS, T30, W700

RealBlackStuff
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Re: A31p display panel issues

#12 Post by RealBlackStuff » Wed Jun 05, 2019 1:32 am

Lovely day for a Guinness! (the Real Black Stuff). And pigs CAN fly!
Check out The Boardroom for Parts, Mods and Other Services.

wujstefan
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Re: A31p display panel issues

#13 Post by wujstefan » Fri Jun 07, 2019 6:58 am

Well you can go for a SHARP UXGa panel from Dell - I'm happy how it works and how it looks... and what it costs actually :)

I was also able to install both ID-Tech IPS UXGA from T43p and Hydis Led UXGA into it, but these are more expensive options. Sharp will hit you ~$30-35 I guess. And it's a very bright panel, requiring simple 1:1 swap - all you need is to look out at the cable - it's just a bit too long AFAIR and needs some bending.
Too many thinkpads not enough time!
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smf
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Re: A31p display panel issues

#14 Post by smf » Wed Aug 28, 2019 2:58 pm

Bump. . .Srry. . . can I install a gloss screen and ditch the flat matte screen on my A31p, What shuld I get for best look. Any gloss screen units, with proper resolution for top quality known?

ajkula66
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Re: A31p display panel issues

#15 Post by ajkula66 » Wed Aug 28, 2019 3:03 pm

smf wrote:
Wed Aug 28, 2019 2:58 pm
Bump. . .Srry. . . can I install a gloss screen and ditch the flat matte screen on my A31p, What shuld I get for best look. Any gloss screen units, with proper resolution for top quality known?
I can't think of a single glossy 1600x1200 panel.

Why would you want to get rid of the original screen to begin with ?
...Knowledge is a deadly friend when no one sets the rules...(King Crimson)

Cheers,

George (your grouchy retired FlexView farmer)

FlexView AARP club members:A31p, T43pSF, X60T

Abused daily: T520, X200s


PMs requesting personal tech support will be ignored.

smf
Posts: 35
Joined: Fri Mar 01, 2019 10:52 am
Location: Methuen, Ma. USA

Re: A31p display panel issues

#16 Post by smf » Wed Aug 28, 2019 4:12 pm

a little yelloey..always liked the gloss look, I figured i'd fit my favorite thinkpad with one. kill one bird with two stones. . .
ajkula66 wrote:
Wed Aug 28, 2019 3:03 pm
smf wrote:
Wed Aug 28, 2019 2:58 pm
Bump. . .Srry. . . can I install a gloss screen and ditch the flat matte screen on my A31p, What shuld I get for best look. Any gloss screen units, with proper resolution for top quality known?
I can't think of a single glossy 1600x1200 panel.

Why would you want to get rid of the original screen to begin with ?

Arc
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Location: Baltimore, MD

Re: A31p display panel issues

#17 Post by Arc » Thu Sep 12, 2019 2:02 am

wujstefan wrote:
Fri Jun 07, 2019 6:58 am
Well you can go for a SHARP UXGa panel from Dell - I'm happy how it works and how it looks... and what it costs actually :)

I was also able to install both ID-Tech IPS UXGA from T43p and Hydis Led UXGA into it, but these are more expensive options. Sharp will hit you ~$30-35 I guess. And it's a very bright panel, requiring simple 1:1 swap - all you need is to look out at the cable - it's just a bit too long AFAIR and needs some bending.
What's the exact number of the SHARP panel? LQ150U1LH22? I see one of these for sale. I gotta replace a screen too...
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RealBlackStuff
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Re: A31p display panel issues

#18 Post by RealBlackStuff » Thu Sep 12, 2019 2:23 am

Search eBay for Sharp screens with exactly this: (lq150u1lw22,lq150u1lw22n,9h753,n1563) -memory
Lovely day for a Guinness! (the Real Black Stuff). And pigs CAN fly!
Check out The Boardroom for Parts, Mods and Other Services.

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