You will need to replace the screen, cable and mainboard to change to a touchscreen - and likely the display bezel and back cover as well.
I have looked through every part for the Dell Studio 17 (45, 47, 49) and there seems to be nothing that differentiates between touch screen and non touch screen. Like with Motherboards there appears to be just 4, AMD w/ Discrete Graphics, AMD with onboard graphics, Intel with Discrete Graphics and Intel with onboard Graphics. The only thing I found different was a different connector cable for the monitor listed on parts people.
Dell Studio 1749 17.3" Touch Screen Cable - D655T
and of course the actual screen itself:
Dell 1749 LED 17.3" HD+ WLED Touch Screen LCD Widescreen - J13JX
Having a touch screen myself on my desktop, I can't think of what would be required on the motherboard. Do you know of any different part numbers for anything other than these two parts that differentiate between touch and non-touch?
Be careful to make sure your existing board has the jack for the touchscreen cable -- I don't know about this model, but on the newer ones, the systems sold without touchscreens use a board that doesn't have the connector for one (not unlike the situation where systems sold without backlit keyboards lack the jack for the backlight cable).
I don't think the touchscreen version of this model was sold for very long - there may not be that many of them out there.
That's the thing about this system. I was noticing a lot of connectors for parts it did not come with.
Mine did not come with a back-lit keyboard, however it had the power ribbon slot right next to the normal one so I could add one.
It also didn't come with a 2nd HDD, but it had the SATA port for one and it didn't come with a bluetooth module, but it had the spot to add that too.
Normally when I've opened up laptops it's common to find that optional connectors were not included for parts it didn't come with.
However this laptop seems to be the exception to that rule every time I look.
I wonder if it's possible that they just didn't make enough to justify printing motherboards with different options?
I'm on the phone now with Dell support asking about adding a touch screen to my motherboard, I'll post what they tell me.
Okay, so the motherboard I purchased is the LA-5155P.
According to the technician I spoke with at Dell there is only one motherboard that does not support touch screen (doesn't have the connector) and I did not draw the short straw so I should be good. He also confirmed for me that the motherboard I ordered will fit in the 1745 case as well.
He was so kind as to give me the exact model number for the screen that would have come with my board should I have ordered it touch screen as well which is 79YFH. He was uncertain about whether or not D655T was the correct cable but he was pretty sure it is.
Best part of all, the cable is cheap and I found that screen for under $65.
All in all, not including what I will get back from selling my old motherboard / processor / screen / etc. this has been a great deal.
With $115 for the motherboard / processor / and heatsinks, $80 for screen / cable, $20 for back-lit keyboard.
I only paid less than an hundred bucks for the computer. I looked them up online and you can find broken 1745's cheap.
So say you pay $200 (which would be a LOT) for a broken system, say bad motherboard or screen or both.
Here's what I spent, but what I ended up with:
$100 System itself (though I think it was more like $80)
$65 Motherboard w/ 1GB 5650 Graphics Card
$20 for Heatsinks to go with motherboard
$30 for i5 -540M Processor
$65 for 17.3" touch panel!
$15 Touch Cable
$20 for a back-lit keyboard.
I have 8GB Ram ($40 at Fry's about a year ago) and 2x 1TB HDD's that I purchased on NewEgg on sale for $50 each.
I paid $6 for a bluetooth module and $17 for the TV Card.
Factoring in how easy it would be to duplicate this and how easy it would be to get a broken system without a motherboard / screen / HDD or RAM for $100 or less.
I'll end up with the following system.
i5 - 540M @ 2.53Ghz
8GB PC 1066
2x 1TB HDD
BlueTooth & Good WiFi
17.3" Multi-Touch Screen!
1GB ATI 5650 Graphics
All for a Total Cost:
Now imagine if someone could live with the 4GB RAM and 500GB HDD it came with.
You can't touch this kind of system for this price anywhere, not used or otherwise!
The only things I'd do different or still may.
I purchased that processor by mistake, thinking back I could get an i7 for about twice as much and I would have. I should be able to easily get my money back on that i5 and probably will after I have the system running smooth and know I'm all good. At $70 I could have had this build at an i7 and still only been at $453.00. Also, if the motherboard supports Raid 0 for the SATA ports, I'd like to add a mPCIe 256GB SSD for $150~ and use that for the OS and RAID 0 the 2x 1TB drives.
I will go ahead and post the results of the build when the parts come in and I build it. I'm also gonna make a YouTube video of the upgrade.
"At $70 I could have had this build at an i7 and still only been at $453.00. Also, if the motherboard supports Raid 0 for the SATA ports, I'd like to add a mPCIe 256GB SSD for $150~ and use that for the OS and RAID 0 the 2x 1TB drives."
The system has no RAID support at all - nor will it take an mSATA drive (yes, mSATA drives are physically the same as mini-PCIe, but the electrical connection is very different, and your system pre-dates mSATA by quite some time.
I know mPCIe is not the same as mSATA, however I've spent a lot of time looking into this very issue.
I've heard of several SSD's that are supposed to work in WWAN slots that have their own built in SATA controllers.
OCZ, Samsung, Supertalent and I've heard others say they make drives that work in this manor.
Is one example I've read works.
Also, there are mPCIe PATA/IDE interface drives that have their own controller as well like those used in the Dell Mini 9.
Granted, I know it will take some testing however I believe there's a strong chance I can get one to work.
If I can, and can manage to get it to boot, striping the two SATA drives into a raid shouldn't be too hard even without native raid support.
Granted this is all stuff that takes a bit of work to accomplish but I'm always up for a challenge.
After all according to many my entire build is impossible but I've no doubt in a few weeks time I'll be posting soon on a Dell Studio 1945 (1949) with touch screen. I'm very persistent and if it means flashing into the bios or a little soldering then that's what I'll have to do.
Just FYI for those interested in upgrading their Dell Studio 17
I successfully upgraded all but one of my upgrades and the one I didn't was only due to a lack of knowing I needed one part (which I have now ordered).
My budget build pimped Dell Studio upgraded from 1745 to 1749 was a total success.
The motherboard w/ the new heat sinks worked flawlessly.
The only miscalculation I made was I needed to purchase a new "top" or back to the screen. It cost me $44 for a Dell Refurbished designer one which I must admit is a huge upgrade in appearance to the not so nice one that I got it with.
It seems not only is the screen slightly wider, but the new back has a screw hole to install the circuit board for the touch cable to plug into.
I'm confident in absolute success as testing the screen without the new back recognized right away.
My uber inexpensive super laptop is crazy fast and so far is having no issues at all.
After I install the touch screen I'll run some performance tests and 3DMark once the CPU and GPU have settled into their new thermal compound.
I video taped the install as I will with the touch screen.
The edited version along with the specs & 3DMark will be posted on youtube as soon as it's all done.
For those that have a dell Studio 174X and want to upgrade the video all I can tell you is DO IT! It's very worth it and not that expensive, especially compared to purchasing a new laptop.
As for parts interchangeability, I am using a case/accessories to a Studio 1745, Screen/Touch Panel, etc from 1747, and motherboard from 1749.
For those interested in my experiment.
I did need a new screen back, but that's okay since I was going to purchase one anyway.
As for the rest all I can say is it was VERY worth it and I'm extremely impressed with the results.
I'll post a link to the youtube video when it's 100% complete.
Though I've tested it, I need to wait for the new screen back to put that part on.
Graphics card, new processor & motherboard all performing great.
Had to make a text file identifying where the parts came from though, the drivers disk will contain drivers from all 3 models of the 174X.