just when i thought i'd seen it all..

[hightechrex]

Ok i have a clients Dell Inspiron 1750 here. The original resolution was 1600 x 900. When replacing the screen i found a screen for a decent price that was 1920 x 1080.. The Inspiron 1750 is supposed to support true 1080p resolutions in its 17.3 inch model.. Simple enough right..

Not really.. The screen doesn't turn on.. it remains black. So i plugged in an external monitor to see if it the GPU was the culprit. Oddly enough the external monitor lit up with my windows login screen.. BUT what's weird is that the external monitor doesn't display anything until the laptop reaches the windows login screen (screen remains black while it POSTS, splash screen, etc. Which to me looks like the external monitor is only being detected by windows and not by the BIOS.. HUH???) . With access to the computer i updated the GPU and the BIOS.. nothing. Will i need to reorder the original screen that came with the computer although the inspiron 1750 is supposed to support the screen? Is it a possibility that the GPU only support 1600 x 900 and the model that supports 1920 x 1080 uses a different one??

Sidenote: It doesn't seem to have an inverter board anywhere; I don't see one. So that's not the problem. The screen may be LED and not require one? maybe?
HELP!

 

[14049752]

Nothing you said is unusual or out of the ordinary.
The video cable is meant for the lower resolution screen. You either have to get a matching screen or replace the video cable with the one meant for the higher resolution screen.

Also, you don't know the difference between LED and CCFL screens? The CCFL screens always have a power cable coming out the bottom for the backlight that connects to the inverter. The LED screens carry power and signal in the one video cable.

 

[PCX]

In short.

LCD: Older technology that requires an inverter. In most cases, you will not be able to upgrade to an LED.

LED: Newer technology that does not require an inverter.

 

[14049752]

In short.
LCD: Older technology that requires an inverter. In most cases, you will not be able to upgrade to an LED.
LED: Newer technology that does not require an inverter.

That's not right, either. Both screens are LCD. The backlight is the difference. What you're calling "LCD" is actually an LCD screen with a CCFL backlight. What you're calling "LED" is actually an LCD screen with an LED backlight. The only difference is the way the screen is lit up.

I guess you did say "in short", though... but still...

 

[hightechrex]

That's not right, either. Both screens are LCD. The backlight is the difference. What you're calling "LCD" is actually an LCD screen with a CCFL backlight. What you're calling "LED" is actually an LCD screen with an LED backlight. The only difference is the way the screen is lit up.

Wrong.. LED uses alot less power and doesn't need an inverter

 

[14049752]

Wrong.. LED uses alot less power and doesn't need an inverter

..... Ok... You clearly do not understand what I am saying.

 

[PCX]

That's not right, either. Both screens are LCD. The backlight is the difference. What you're calling "LCD" is actually an LCD screen with a CCFL backlight. What you're calling "LED" is actually an LCD screen with an LED backlight. The only difference is the way the screen is lit up.

I guess you did say "in short", though... but still...

Yeah, from what I understand, that is more accurate, but like I said, "in short" meaning the purposes of knowing what to install, that is the basics.

 

[hightechrex]

Yeah, from what I understand, that is more accurate, but like I said, "in short" meaning the purposes of knowing what to install, that is the basics.

What he said wasn't news. I know the difference. I just wasn't sure whether or not the screen was LED or LCD. I just assumed it was led because I didnt see an inverter and they aren't online. Another detail that throws a wrench I'm your theories.... the original screen doesn't work either.

 

[PCX]

What he said wasn't news. I know the difference. I just wasn't sure whether or not the screen was LED or LCD. I just assumed it was led because I didnt see an inverter and they aren't online. Another detail that throws a wrench I'm your theories.... the original screen doesn't work either.

In any case, an LED screen would not fit with the an LCD cable and vise versa. Also the LCD is going to have an inverter cable. Regardless of all that, you can simply look up the model number and get all the specs you need to get the appropriate screen.

Finally, of all the research I have done, I have found that most people suggest that you do not try to upgrade the screen for several reasons. The GPU may be able to handle 1080p, but thats probably working graphics meant for HDMI. I could be wrong, but again, most of the research that I have done suggests that you should not upgrade or downgrade a screen.

Oh, and settle down rex, no one was trying to offend you.

 

[14049752]

What he said wasn't news. I know the difference. I just wasn't sure whether or not the screen was LED or LCD. I just assumed it was led because I didnt see an inverter and they aren't online. Another detail that throws a wrench I'm your theories.... the original screen doesn't work either.

Somehow I knew you'd say this... "I know the difference"...but you still said "May be LED". I'm not attacking you, exactly...but.... there shouldn't have been a question. There is no way you'd miss the difference if what I'm saying isn't news.


And...again... Both screens are LCD. I know that an LED backlight LCD uses less power and has no inverter....because it's using LEDs to light the screen. The LCD panel is what displays the picture. The LEDs or the CCFL is what lights up the LCD panel so that you can actually see it. "LED" screens are not actually using LEDs to display the picture....LEDs are simply not that small (yet).



So, back to the actual topic; I guess you didn't say why you were replacing the screen. I assumed cracked, and guessed based on that. My mistake.
More information is needed about why you thought to replace it. Mind you, what I said still stands...you usually DO need a different cable for higher resolution screens....

 

[hightechrex]

In any case, an LED screen would not fit with the an LCD cable and vise versa. Also the LCD is going to have an inverter cable. Regardless of all that, you can simply look up the model number and get all the specs you need to get the appropriate screen.

Finally, of all the research I have done, I have found that most people suggest that you do not try to upgrade the screen for several reasons. The GPU may be able to handle 1080p, but thats probably working graphics meant for HDMI. I could be wrong, but again, most of the research that I have done suggests that you should not upgrade or downgrade a screen.

The original doesn't work at all either. It dod prior to installing the new screen. The screen was just cracked. Now it doesn't even turn on. Lol... are you going to help?

 

[PCX]

The original doesn't work at all either. It dod prior to installing the new screen. The screen was just cracked. Now it doesn't even turn on. Lol... are you going to help?

That might be the reason why people suggest that you do not upgrade . . .

 

[14049752]

The original doesn't work at all either. It dod prior to installing the new screen. The screen was just cracked. Now it doesn't even turn on. Lol... are you going to help?

Ok, so either the cable is bad, or putting in the wrong screen shorted something out due to a different pin-out.. I'm guessing wrong screen -> shorted video circuitry.

 

[RedFoxComp]

Sometime I can't believe this is a forum for people that charge money as computer professionals.

 

[SprinterTech-WI]

Sometime I can't believe this is a forum for people that charge money as computer professionals.

yea... I opened an account over here a month or so ago... but seems all I can find are lots of pizzatechs as we call them..... I think I'll be going back to theforcefield for all my daily musings, but some of these posts really give me a hearty laugh! so I'm still here for the comedic effect!!! (not aimed at anyone particular)

 

[14049752]

yea... I opened an account over here a month or so ago... but seems all I can find are lots of pizzatechs as we call them..... I think I'll be going back to theforcefield for all my daily musings, but some of these posts really give me a hearty laugh! so I'm still here for the comedic effect!!! (not aimed at anyone particular)

If you stick around long enough, history repeats itself time and time again. There was a guy a couple of years ago that made me end up leaving for a bit.... Simply had no idea why Windows would not install on a drive that the manufacturer's hard drive diag test failed.
I've learned to try to learn where I can, educate where I can, and laugh at or ignore the rest on here.

 

[DCGPX]

If you stick around long enough, history repeats itself time and time again. There was a guy a couple of years ago that made me end up leaving for a bit.... Simply had no idea why Windows would not install on a drive that the manufacturer's hard drive diag test failed.
I've learned to try to learn where I can, educate where I can, and laugh at or ignore the rest on here.

I think you'll find this happen on most forums. Theres some excellent posts on this forum thats worth staying for.

Bear in mind this forum is for Business owners AND new/thinking about startups so there will be an element of noobie questions.

Overall though its a worthwhile forum to stay on. Ignore the posts you dont like, I do.

 

[SprinterTech-WI]

If you stick around long enough, history repeats itself time and time again. There was a guy a couple of years ago that made me end up leaving for a bit.... Simply had no idea why Windows would not install on a drive that the manufacturer's hard drive diag test failed.
I've learned to try to learn where I can, educate where I can, and laugh at or ignore the rest on here.

yea, saw a post here (i think) from someone who couldn't figure why his PC was BSODing after installing Win7 on a HDD on his desktop, then it wouldn't work when he plugged it into his laptop, that was a LOL moment when I saw that!!!

I'll prolly stick around, but as a business owner and a few years experience (only about 5 - but 5 full time years) of experience I am just somewhat shocked by posts.... it does make the day more interesting! and I usually feel better about my mistakes as well!

 

[PCX]

Well, in the light of hijacking this thread with everyone else . . . I personally do not gain as much as I would like. While I do post questions, I try and help more than anything else and I find that helping others in the end helps yourself to grow and learn.

As for what many of you have said about being shocked at some of the questions that come from "professionals" I agree. One simple thing that seems to be the hardest to get through peoples heads is running a full diagnostics before trying to troubleshoot software issues that may or may not be caused by failing hardware. So many people here are trying to do short cuts and in the end they just waste time and money. Unfortunately, I think most will end up learning the hard way and either finally get it or lose their business. I guess that saddest thing is that many are on here seeking help, and when it is given they can't be told anything.

BTW, none of this was aimed at any one particular.

 

[fixietech]

It is possible to use a converter cable to put an newer LED based screen in an older laptop, I've done it a number of times. Sometimes it's the only way to replace a screen when the original part is unavailable. You can find the cables on ebay.