I understand that the 5150 and the 1150 Have like problems. I have the 1150 towrn down and have resoldered the U56 the LVC14A. The strange thing about the problem is The unit will not power on from the AC adapter. However, If I connect the unit to an external monitor, it will power on and operate notmally even charges the battery. I saw one question from someone, not sure it was here, asking about this issue. I didn't see any resulation.
Can anyone help?
BTW, I have been working on laptops for over 12 years but I've not run into this one before. Thanks
I found the problem. I had already tried the things you suggested. I breadboarded the MoBo and connected a jumper wire to the ground of the monitor jack. I then found the ground of the ac adapter. the MOBO powered up. I then tried the same thing only to the ground side of the MOBO at the ac adapter jack. It would not power up. Conclusion: the ac connector jack is bad. I priced one for this model and boy what a shock. $35.00 plus shipping.
I'm having a similar problem, and I suspected the AC connector jack, too. Whatever problem I'm having is most likely due to overheating. Anyhow, I was wondering if the AC connector jack is bad, that shouldn't prevent the laptop from booting with a full battery, right?
If the battery is charged, it should power up notmally if the ac connector is the only problem. As I stated, a simple test is to connector a wire, between the monitor jack ground, the silver part around the connector, and the ground around the ac connector. attach the ac adapter. if the unit powers up, the ground on the ac adapter is broken. Is it the ac adapter connector? I can't say. Only that the ac adapter ground isn't making contact with the system ground. I repaired this unit by replacing the ac connector on the unit. In jsome cases, the Mother Board ground may be broken. Each troublshooting case is different. Keep an open mind.
I am having the same problem and was wondering if you could post some pics or intructions on what to do to change out the JACK. If not I understand, just figured it couldn't hurt to ask. Thanks for your time. JC
Sorry no. I have returned the unit to the owner. Once the unit is disassembled, use standard unsoldering and installation procedures. Just be careful to not damage the board by over heating. Use plenty of solder paste and a solder sucker. Use solder wick as a last resort. Do not force the connector from the mount. It should be removed with as little force as possible. When installing the new connector, be sure the connection on the top and bottom of the board are soldered. If you have on solding experence, Find a buddy who has. Best advice to give, Get a motherboard from eBay and save the headackes.
I am willing to be a picture taking re-working soldering fool. I have an 1150 from a friend at work that has the same problems. i have not done any of the testing as pointed out above as he did not give my the power adapter and all that i have here will not fit Dell's intelligent proprietary crapola.
I have a hot air re-work station and i my solder work has been checked by guys from NASA (i did chip tuning on thier cars .
so, Willie, can i e-mail you my phone number so we can discuss this? i have Vonage and Sprint so i could always call you too. If this will work for you please let me know but if you fix laptops for income and chose not to help i would completely understand. and if that is the case, post your address and how much and i will ship this sucker out I would however rather do it my self as i love to tinker
I have just had the same problem of the 1150 not powering on, after checking all the cables, battery,etc. I have just modified the "C" Covers as explained. I have 5 of the 1150's and 1 failed this morning.
I saw a picture of the area that is supposed to have been worn by the tabs on the "C" cover. Can someone give me a link to the photo? I have not been able to find it. Thanks!!
Sorry I haven't been on for a while. As a country song says, "Life Happens". As to your question, The replacement ac connector can be purchased on eBay for around $5. Anyone with good soldering skills can replace the connector. The hard part is getting to the darn thing. Just mark all screw positions, and chart the parts layout so you can get the thing back together again. I work on these locally and charge $80. I don't do ship orders because it would cost a great deal more due to time involved in the shipping process. So you micht find someone at some school that teaches electronics or computers for help in this area.
Hello, i have a 1150 which does not post with the ac adapter plugged in, it will on battery, when plugging in the ac it locks the laptop, have to reboot, weird thing is it charges the battery fine, also took it apart and has continuity on grounds between other connectors and video ground, like willy said, so it seems the connector is working fine, it has to be whatever detects the ac power from battery...i feel bad mobo, also found soe hair inside, could it be shorting something out?, is hair a conducter?
This doesnt seem to have a bad adapter connector as it tests and grounds fine
Any other idea's would be appreciated.
If I'm not mistaken,(it's been a while, and I've slept a time or two), the MOBO has diodes that will guide the voltage from the ac adapter or the battery, which ever voltage is greater to the regulators. One of these may be bad. Truth of the matter, is you can, more than likely, get a replacement MOBO from eBay for less than it would cost to repair yours. There are repair services on the internet that claim they can repair the thing to the chip level. Be careful. On Ebay, I don't do business with anyone that doesn't have a 98% or better rating. I know this isn't very helpful, but that's what I think.
I have a similar problem after 13 months of use, the computer (dell 1150) worked one day, it locked up, so I attempted to reboot it, after that it never turned back on. The LEDs blink, the fan starts and then turns off thats pretty much it. Now its collecting dust, I would like to fix it. I tried to resolder the LVC14A chip, not sure if it was effective - computer is still dead. If anybody has any suggestions that would be great.
Can anyone confirm for me pin outs for the DC jack, I want to build a test jig to test the motherboard before springing for the new dc jack. Jack was pretty mangled and pins were floating around loose. Looks like motherboard was so hot that the jack started to lift from motherboard and after a few dozen time of user shoving the ac adpter in anyway, the jack is toast.
I might have find a solution to this problem. First of all, thanks a million to laptop_willie to point out the grounding issue, with the simple diagnostic of plugging an external monitor. This worked for me. I then decided to take the 1150 apart, following the instructions on dell.com. This was easier than I thought. Then, I decided to follow the grounding paths from the DC jack, withn a ohm-meter. I realized that with the DC jack in the outlet, I have ground to the pin that is on the MoBo, direclty underneath the DC connector, and in the middle of it (they were actually two of them). Then, I checked that the MoBo ground was on the DC connector steel housing. This housing is physically connected to the MoBo via 4 or 6 (I forgot) pins that protude through it, to the back side. So what I did what simply to connect the center pin (DC adaptor ground) to one of the outside pin (MoBo ground). Make sure that you are not connecting to the +12V pins (easy to locate, underneath the side of the connector that is facing the center of the MoBo). Put everything back together, and my 1150 has been charging the battery and working flawlessly since then. I hope this helps....
My sister decided on a DELL, spending $1800.00 for what she thought was a quality system to get her daughter through high school. In 13 months it has become a mightmare.
It had the Power connector problem where it was so loose and bad it was sparking, SO I ordered a replacement jack for the motherboard on eBay for big bucks, put it in and at least I can charge the battery now.
I was having problems getting in to XP. It would go to a blank screen/cursor when I booted up when the AC adapter is connected. It was weird because it would at least attempt to boot if I tried off the battery alone. But when I did this, I would have to run a chkdsk to fix the drive everytime.
I found out that once I got in, I could go to set up and set the speed control to disabled, then it would work off the power adapter. So there's another issue. The built in speed control. I updated the bios and it didn't help.
I think when you turn it back on and cannot see anything, the hard drive may be running a chkdsk on the NTFS partition even though it isn't visible (you can hear it running if you put your ear to the case). But when the sould stops, it doesn't become visible and show the OS.
SO with speed control off, and the system running SLOW I could see, but I still couldn't boot normally. I had to reboot, do a chkdsk, then boot into safe mode with networking. YAY. I was able to connect on my lan and back up files to a shared folder. So now everything I think I want is saved.
I ran the diagnostics and everything worked fine EXCEPT when I did the ac adpater tests. It would lock up SOMETIMES when I plugged in the adapter during this test, otherwise things worked fine.
If connected, it charges the battery fine, I can even start up the system with that speed control off.
I began thinking Maybe it needed a newer driver for the speed control and that is why this wasn't working properly. I found something at Dell support. But I needed to get XP running ok again to install it.
SO, I decided to consider the power problem fixed and Restore the software to original factory. Well, in my attempt at this, it's locking up installing some drivers now.
I Feel I should be charging Dell a weeks pay because the quality of that jack and power connector is poor. It faild JUST after warranty was over. In fact, I have heard of companies actually designing circuits TO FAIL after a certain period of use. As an Electronic Engineer, I wouldn't put it past them. You could easily design a counter to cause a circuit to short after a period of time. Buried in a IC Chip, no one would know. I have heard of it done. Anyway, back to the 1150.
I can boot with battery and speed disabled in bios and run in safe mode all day long.
I can also run diagnostics all day except for one thing. The adapter test.
The hard drive passes all tests.
I Don't think there's a hard drive problem, although I do think the drive gets corrupted when it locks.
I don't think there's a power supply problem, but not sure now. It works as long as I don't plug/unplug.
I wonder if there's a virus problem. I am now trying the DSRFIX found.
This is so hard and a pain to figure.
I DO KNOW there's a problem with the intel speed control in bios if enabled.
I DO KNOW SAFE mode works for hours.
I think the drive is ok, just getting corrupted by some problems
While I try to restore, or when ever it had failed it was consistant as to where in the process it was, so I can't believe it's a hardware issue, it's too consistant in where it freezes.
I am stumped and aggravated. I use to recommend Dell to my business customers, but not any more. The quaility seems to have really deteriorated. Thank gawd there are groups like you all that look for fixes and talk online.