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Acer 7740 Won't Charge, Need Help Thanks

post #1 of 10
Thread Starter 
I am in a pickle. My wife has an Acer 7740 she uses for school. When she used it the other day windows said you need to consider replacing the battery then shut down. I ordered and installed a new battery. It still would not charge. SO I ordered a new charger. It still will not charge.
When we plug the charger into the wall the light on the charger stays on. When I plug the charger into the laptop the light starts to flicker or go off.

I assume the power receptor in the laptop is either faulty or the solder has broken looses creating a short or what not. I am hoping it's not a major motherboard problem.
I need suggestions and repair options. I am very proficient with desktop and wish this was one. My tech level on laptops is not at my level on desktops.

I need all the help I can get on this one. Thanks
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post #2 of 10
You can try inspecting and replacing the DC power jack. They usually only run up to 15 bucks at most. The disassembly will obviously be unique to your laptop. Took me 45 mins to an hour to reach the heatsink assembly on an HP and less than 1 minute on a vaio.
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post #3 of 10
I suggest if possible taking it to an Acer tech support center (assuming its in warranty) and let them test it. Its possible the connector or jack or something else might be wrong with the laptop.
   
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post #4 of 10
Thread Starter 
I am in the dis assembly phase at the moment. I have removed the cpu,memory,hard drive, heat sink and fan. Working on case screws and then keyboard.
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post #5 of 10
Thread Starter 
can any help me find a guide for this lappy
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post #6 of 10
Thread Starter 
I found the manual and removed the motherboard. Now I am looking for a replacement motherboard as I see no damage to the dc jack but it may be so small I cannot even if it is bad. I am trying to find a replacement motherboard, but I am having a difficult time as there are not hardly any places selling the motherboard.
If anyone knows where I can get a used motherboard for this model or any info regarding parts as I have checked numerous places to no avail. Please let me knwo. I would appreciate it. Thanks. MAINBOARD JV71_CP AS7740
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My Mobile Beast
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Raid 0 2TB, 1.5TB Hitachi backup SONY DVD Ram + Lightscribe Hyper 212 Plus Windows 7 64bit / Zorin 
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post #7 of 10
You probably voided your warranty at this point so sending it back is a no go...

You also didn't need to remove as many parts as you did since inspecting the solder on the dc jack wouldn't require you removing the cpu etc...

I know of places around my area that would've fixed that for about $100 with no guarantee that it would charge afterwards so again, your best bet would've been to send it to acer... you should give it a shot
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post #8 of 10
Thread Starter 
the laptop went bad 2 days after the warranty.I can't afford to have it fixed now since I went ahead a bought the wife a new lenovo idea pad laptop with a 3 year warranty.I guess I will just have to wait until I can find a used or low price replacement motherboard.I just sux that I have a complete parts laptop with a non working motherboard. This whole issue is the reason why I personally only own a desktop pc. Laptop are overpriced and unreliable in my experience. I will take my Motorola Atrix smartphone over a laptop anyday. There really needs to be better and more barebones laptops on the market.
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CPUMotherboardGraphicsRAM
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Raid 0 2TB, 1.5TB Hitachi backup SONY DVD Ram + Lightscribe Hyper 212 Plus Windows 7 64bit / Zorin 
MonitorKeyboardPowerCase
LG FLATRON W2361V Saitek V.5 Cyborg Silverstone Element 750w PSU Cooler Master CM690 II Advanced 
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My Mobile Beast
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CPUMotherboardGraphicsRAM
I5 750 @3.809 Ghz MSI P55-GD85 XFX 5850 @ 801/1150 38c idle 8 GB Corsair XMS3 1600 Mhz 
Hard DriveOptical DriveCoolingOS
Raid 0 2TB, 1.5TB Hitachi backup SONY DVD Ram + Lightscribe Hyper 212 Plus Windows 7 64bit / Zorin 
MonitorKeyboardPowerCase
LG FLATRON W2361V Saitek V.5 Cyborg Silverstone Element 750w PSU Cooler Master CM690 II Advanced 
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post #9 of 10
It could be a damaged DC jack. Try moving the connector around, sometimes they get damaged and have a sweet spot that works.
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post #10 of 10
Thread Starter 
Quote:
Originally Posted by Ecstacy View Post
It could be a damaged DC jack. Try moving the connector around, sometimes they get damaged and have a sweet spot that works.
I have tried that to no avail. Since I cannot afford to send it off to get fixed; and at some point I plan to replace the motherboard. I suppose I will just try to remove the dc power connector and resauter a new one. Regardless, this whole issue is extremely irritating.
My Mobile Beast
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CPUMotherboardGraphicsRAM
I5 750 @3.809 Ghz MSI P55-GD85 XFX 5850 @ 801/1150 38c idle 8 GB Corsair XMS3 1600 Mhz 
Hard DriveOptical DriveCoolingOS
Raid 0 2TB, 1.5TB Hitachi backup SONY DVD Ram + Lightscribe Hyper 212 Plus Windows 7 64bit / Zorin 
MonitorKeyboardPowerCase
LG FLATRON W2361V Saitek V.5 Cyborg Silverstone Element 750w PSU Cooler Master CM690 II Advanced 
MouseMouse PadAudioAudio
Logitech G700 NA Creative 2.1 Lenovo P950 Headset 
  hide details  
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My Mobile Beast
(16 items)
 
  
CPUMotherboardGraphicsRAM
I5 750 @3.809 Ghz MSI P55-GD85 XFX 5850 @ 801/1150 38c idle 8 GB Corsair XMS3 1600 Mhz 
Hard DriveOptical DriveCoolingOS
Raid 0 2TB, 1.5TB Hitachi backup SONY DVD Ram + Lightscribe Hyper 212 Plus Windows 7 64bit / Zorin 
MonitorKeyboardPowerCase
LG FLATRON W2361V Saitek V.5 Cyborg Silverstone Element 750w PSU Cooler Master CM690 II Advanced 
MouseMouse PadAudioAudio
Logitech G700 NA Creative 2.1 Lenovo P950 Headset 
  hide details  
Reply
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