Could I use my HP laptop screen to test if there is anything wrong with my Acer laptop

Hi,

I have an Acer Aspire 5810T with a LP156WH3 screen. Lately my screen just get's black with no image. Nonetheless if I connect the computer to an external display I works fne.

I also have a HP PROBOOK 4520s. I was thinking about trying to remove my ProBOOK screen and connect it to my Acer Laptop just to see if it works fine (to check if the malfunction is really due to the screen). My question is:

Should my HP screen work with the Acer computer, altough it's another screen model?

Many thanks in advance. I would buy a screen if my Acer screen is broken. But first I need to check if the screen is really broken or if there's another couse for my Acer problem...

Many thanks in advance.

Francis

 

It might work. It might not. Depends on how similar the two screens are.

Why don't you just try using the Acer with an external display? If that works, the rest of the laptop probably works fine.

 

Hi,

I've tried connecting the laptop to an external screen and it worked fine with the external display.

Then I tried my laptop screen on another compatible laptop (HP 4520s) and it worked fine on the other laptop. However, when I tried the other laptop screen (It's compatible) on my own laptop and it didn't work.

So, because my Acer Aspire 5810T screen works on other laptops and my laptop works fine using an external display I think that maybe the LCD cable could be the problem.

Before I buy a cable, however, would you guys give me a piece of advice from your experience?

Could this be really due to the cable or maybe there is a problem with the graphics card. But, if the problem would be the graphics card could it still be working with an external display like it does?

Many thanks in advance.

PS: I do not send it to the manufacturer because it's out of guarantee and it would cost a lot more than it's value...

 

If my Google-fu serves me right, the 5810T has integrated graphics, so I highly doubt it is bad. Even then, aside from the bad Nvidia 7 and 8 series GPUs, I think GPU failures are a little rarer than LCD cable failures. The external display test is generally a good one, but I have still seen some bad 7 and 8 series chips give a proper output on said external display.

tl;dr try buying that LCD cable.

 

Thanks, Wolf,

I think I'll buy the cable and pray for it to be the cause.

What leaves me a little suspìcious though is that this malfunction happened just after I had removed the laptop memories. After removing and put back the RAM memories I found out that I had forgoten to remove the batery and, because of that, I'm not sure if the laptop was actually shutted down or just hibernated... Maybe I could have broken the Motherboard...

 

No improper memory install would not let you computer boot properly to begin with I done it many times and that the usual suspect. Also a broken motherboard you wouldn't even get to boot let alone be able to put a display on external monitor. I would say it sounds alot like either a dead blacklight or bad LCD cable or bad LCD cable connection. You should tell us how long you had the laptop and how you took care of it.

 

Hi Storm and Comander. I it would be the backlight how would it be explained that this same screen works fine on another laptop?

Also I just bought a new cable and tried it and it still does not work.

Couldn'it be that an electric discharge driven from the fact that I've removed memories with the laptop hibernated could have afected tha part of the motherboard that's conected with the netbook lcd? That would be a reason for it to work with external dysplay but not wth it's own lcd...

 

It could very well be that the LCD connector on the motherboard is damaged. Unfortunately that fix involves replacing the motherboard. This would also fix issues if the graphics chip is broken. This is a pretty involved process and probably pretty expensive so I wouldn't recommend it unless you really need the laptop display. Even then it might be more cost effective to buy a new computer (your's is getting pretty old).

I believe that backlights these days are built right into the LCDs, and since it's LED there's no inverter, so if you swapped the entire LCD assembly then that wouldn't be the problem.

 

Hi super,

So, could it be that by removing the memories with the computer on, I've caused an electric discharge that could have broken just this part of the motherboard?

By the way, I've found the motherboard on ebay with an aceptable price ;-)

Thanks in advance.

Francis

 

Yeah, if you removed the RAM from the MB with power still applied: you've toasted your MB (all of it, not part of it).

 

Was your computer actually on? Hibernate = off. Sleep = on.

As long as your computer's powered off, there's not that much danger to the computer if you keep the battery in. There is danger to you though. Still there's always a chance you could have shorted something?

Did you use ESD protection? If not you could have shocked something that way. Or it could be complete coincidence and your motherboard was failing anyways.