M570RU Display/screen problem. Not GPU fault! who's culprit?? help!

Hi to all,
This afternoon suddenly I had this artifact on my LCD
http://img508.imageshack.us/img508/623/img1365mod.jpg
http://img18.imageshack.us/img18/3772/img1363mod.jpg

I've swapped the vcard from 3700M to old 9800M GT but i get the same glitch (I was thinkin about a vram fault)
It starts from the bios !
And the strange thing is that on the pixel in that "stripe", the last thing overlayed remain impressed for some times before desappearing!!

Which is the culprit??
I've swapped several gpu vram thermal pads in these days.. Did I touch something??
I have the service manual and I think that something is wrong in the connection to the LCD..but I don't find anything to open it on the SM !!

Anyone with knowledge of this problem to help me?? PLEASEE

Thanks!

 

It definitely looks like an lcd issue, whether cable or screen itself I couldn't say.

Removing the screen from an M570RU is easy, just remove the rubber pads on the display bezel, then remove the screws beneath them (4 i think) then carefully pry off the bezel. After that it should be easy/obvious.

 

I have to open it and then??
What do I have to do to verify or fix it ??

Many thanks to anyone will help me

 

Opened, checked inverter and "illumination" cables..they're not causing the problem! What have I to do ?? detach the all screen seems a little to dangerous for me.. is the LVDS cable attached beneath the screen??

 

ollie, just take the screen off!

There shouldn't be anything other than the bezel you need to pry off, then remove the side rails.

unplugging the cables is obvious. :|

 

And what do I have to do after unplugging everything??

This problem appeared without any kind of hit or shock of any type! therefor I am not thinkin about a bad cable position..but maybe a faulty cable (in that case I cannot do anything )
I don't know.. I think I'll try to open it however..

 

Taken off the lcd. It's a LP171WU1 A4 K4 .
Checked visively and moved a little bit the cable..it seems ok with no interruptions but the problem is still there

I don't know what to do
1.buy new LCD & inverter. in that case wich is the best replacement??
2.buy a new inverter only
(How can I know if one of them is the culprit ??)
3. send the PC to santech italy wich is the clevo vendor wich I purchased the pc from. It will be expensive but maybe they can do some tests before changing anything..

 

I just don't think that is the screen, but you never know. You're about 4 days too late, or you could have had my screen and inverter!

If you just want to see if it's the inverter, I still have the one from mine. If you think it's the motherboard, I have that too!

What happens when you hook up an external monitor? Knowing that much will help out a lot!

 

I second that, i.e. using an external monitor first.

 

Yes, sorry I forgot to write it because I'm in panic and overstressed
It was the second thing that I did: no defects on other screens.
It could be the cable (wich goes from the near of the vcard to the display through all the chassis )
or the inverter (I don't have enough knowledge of what it really does or how it works..I am afraid to detach the cable from the thin pcb too!!)
or the monitor (I think it could be..)

Other things: where the image is blank, the defect disappears.
In the "stripe" there are lines of good displaying pixels alternating with "bad" pixel lines..

thx for helping and understanding

 

I guess there's no need for me to send you the cables or inverter, if you don't feel comfortable doing this stuff yourself. I certainly wouldn't feel comfortable having you install the motherboard, as it's not for the easily confused (alle anfang ist schwer).

Unless you're willing to cancel out the simple things through DIY testing, I don't know what else is left for you to do. I have the cables and the inverter, but you're not willing to switch out the cables. Inverters don't cost much, so you might want to start there before you send it in for a butt rubbing.

butt rubbing = sending it in for repairs and it cost more than the system is worth

 

Santech italy just told me that is the LCD panel gone. They say because of an hit but noone beat it !! It appeared suddenly in the middle of the silence! Mah...

However, it's not that I don't feel comfortable changing everything..it's because I'm total noob concerning LCDs, inverters and so on..
I don't even know what DIY is (I'll google it)

What does an inverter do in this particular case??

Thanks for advices!!

 

Hi oile!

The inverter adjust the amount of current that will flow to the display, insuring there is the right amount of current for its operation, and not too much that will damage its operation. Not enough current will also cause damage, so the inverter is a valuable piece of hardware. It's the cheaper of the two options display/inverter, so I would definitely try a new inverter first!

With that being said...the signs of a bad inverter is the display not having enough light. So your problem could be the display and or cables.

DIY = Do It Yourself

Your laptop LCD may need a replacement if
It is broken or cracked
Backlight Lamp (Bulb) is not functioning
Screen shows a fuzzy picture
There are issues such as dead pixels or line(s) across the screen

So there you have it, you just might have a bad display.

Your lines are not across, but you do have lines.

One more thing oile, make sure that there are no bent pin(s) where the display connects to the motherboard (pins mounted on the motherboard). You might need a flashlight and magnifying glass to view this, but it can be seen with the naked eye if something is bent.

 

True but also not true.

A inverter will NOT cause a problem like this. That is my opinion.
Ineverters do NOT supply voltage to the panel, only to the backlight. So for the backlight to affect operation in this way there would have to be some kind of an explosion.

Also, inverters and bulbs are fairly standard, not too valuable. The symptoms are not always as simple as low brightness, usually there is flickering or a buzzing noise coming from the inverter.
I myself have used a Gateway inverter on my Clevo m860tu which worked fine for a long time.

Keep in mind oile, you do NOT need a Clevo screen, or any kind of exact replacement!!

If you see anything 17" CCFL backlit at a good price, you should probably buy it and it will work.
You can usually get them under 100$ USD.

LCDs are stronger than you think. Because they are actually glass, the LCDs as you buy them will have a built in metal frame and plastic shockmount.
There are generally 4 screws on each side. It can be frightening when it comes loose and you catch it, but like I say they are stronger than you think.

Here is a good screen:
SAMSUNG LTN170CT01 LAPTOP LCD SCREEN 17" WUXGA (EXACT) | eBay

Make sure both of your hinges are straight, made for a normal screen. I had an m570ru that had a strangely shaped screen and hinge brace.

 

I could have copy and paste verbatim what the inverter is exactly, but I have a feeling it wouldn't have matter and it seems we both came up with the same conclusion.

Although it seems easy to install a screen, if you don't really know what you're doing, it might just be a waste of money.

I myself, have seen plenty of things go wrong with what is displayed on the screen (tearing, lines, squares) and the display was not culprit in some of those instances. The cause of those things, were the cables not being seated properly or the inverter was not properly connected. Heck, sometimes it was the motherboard. Strangely enough, a lot of the times it was the person not knowing that they improperly seated the display connector to the motherboard.

Taking stuff apart and putting it back together might be easy, it's knowing how to trouble shoot when those parts don't work jointly. And for that reason and that reason alone, there's no refund (your link) if you don't let someone install something of that nature that is not licensed to, or know what the hell they are doing! So there's a risk involved when buying stuff that requires some knowledge of the job before you start, do your homework first!

 

I've removed the inverter. As you were saying it seems to only do backlight because I have been able to see that the defect was here also with inverter removed and no backlite.

So, as of now, I have restricted the suspects to LCD (90%) or LVDS cable (10%)
The cable seems to have no fractures.. and seems well fixed on the mobo as well


about replacing the LCD..
considering that I live in an idiot nation like Italy, all LCDs will cost me a lot. Conseguentially I think I might spend some more money to catch an LCD that could be an UPGRADE to my old one.
It was a LGPhilips LP171WU1 A4 K4 and I have always noted ghosting (my eyes are very sensitive).
I've heard about a TL A2 version of it to be the most wonderful screen ever producted (?!) but I would have to cut off the inverter bracket (and I really would like NOT to do it by myself)
Or I could a cheap (but probably bad) replacement like that Samsung screen...

In that case Ebay could be my only resource??


Many thanks to anyone helping me

 

Anyone with any useful infos about trustable vendors and compatible models of LP171WU1 for my M570RU??
I am looking everywhere in the world for that item at reasonable prices..

Zfactor is not following the forum anyomore

thanks in advance

 

The samsung I listed is not a bad screen.

All screens have different colors, LG tends to be a little more washed out... Samsung can have some too vibrant colors... but it can all be adjusted.

They are all compatible. No doubt. You should tell the company when you buy it that you do not want any extra metal mounts attached.

 

Just to inform that it was a display issue.
WP171WU1 TL A2 arrived and everything is perfect now.
Thanks to all !

 

nice replacement