Hi, can anyone tell me how to remove the dc jack thing on the back? I know how to get to it and have opened my 400sd4 various times in hopes of repairing the problem, but I cannot figure out how to get the lil' box off, so that I can put a recently purchised one (off of ebay in).....if you can help me with this please tell me. My dc jack is compleatly unrepairable which is why I got another one, I just cannot figure out how to get the old one off so that I can put on the new one.
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Re: dc jack removel
I believe the DC jack is soldered to the board on that model.
It must be unsoldered to remove (from the bottom of the board) and the new one soldered on.
A soldering iron and a solder sucker (to cleanly remove hot solder) can be bought at Radio Shack, HOWEVER if you've never soldered before I would NOT ATTEMPT TO DO THIS REPAIR MYSELF!
It's very easy to toast the motherboard if you don't know what you're doing. I would suggest finding a local electronics/computer repair shop that knows how to work with SMT components. Ask them for an anti-static bag for the motherboard and just bring the motherboard and new jack down to them to have the new one installed. It shouldn't cost more than $40 to replace that way and more like $20-30.
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When you connect the power, does the charge light lit up? this would tell you the power is transmitted to the battery, wich would mean your DC-jack (where the power goes in) is fine, and the problem might be fixed by:
removing the battery,
remove the power,
hold powerbutton for 20 secs,
re-insert power jack(not battery)
press power on button.
If that didnt work, try the following to determine the DC-jack is the problem:
insert power into dc-jack
gently press the power plug into various directions while constantly pressing and releasing the power button.
at some point the laptop should respond by turning on, meaning that you have a faulty dc-jack, which needs re-soldering or even relacement by soldering to repair.
Maybe you also notice that the power connector is very loose in the dc-jack, this might tell you that the dc-jack is the problem..
DC Jack diagnosis: 1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable. 2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced. 3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.) 4. Next, remove the keyboard & the LCD screen. 5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard. 6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them. 7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack. 8. When you are done, re-assemble back the laptop.
1. Test power adapter for output voltage. Bend the power cable in various directions while doing this to be sure that there is no broken conductors in the cable. 2. If power adapter is Ok, connect it & see if the power LED on the laptop will glow when you jiggle the power connector in various directions. If yes, then the DC jack might be loose or damaged, & need to be either re-soldered or replaced. 3. If not, then disassemble the laptop. Remove any components that attach to the laptop's motherboard first (e.g. battery, hard drive, RAM, wireless card, optical drive, ... etc.) 4. Next, remove the keyboard & the LCD screen. 5. Finally, unscrew all screws that hold the upper cover & lower cover together so that you could gain access to the motherboard. 6. Inspect the solder points connecting the DC jack to the motherboard. Make sure that none of them is loose. If any, re-solder them. 7. Inspect the center pin in the DC jack. Make sure that it is not broken or loose. If it is, then you might need to replace the DC jack. 8. When you are done, re-assemble back the laptop
To replace the DC jack, the motherboard has to come out. Here's a couple of links that have breakdown diagrams for various machines, you may be able to find a diagram for yours at one. http://repair4laptop.org/notebook.html
Most, if not all computer manufacturers do not include these instructions, & for good reason too. You should not attempt to replace a DC Jack if you are not very technologically savvy.
Repairing the actual DC Jack itself requires you to strip the notebook down to the motherboard. From that point you will need to de-solder the old DC jack (very carefully) and then solder a new DC jack to the motherboard. After those steps are complete, you need to test the power using a voltmeter. If the voltage matches up to that of the computers you can continue. After you have finished all of that the only thing left is to put the notebook back together.
More detailed instructions as well as photos can be found by doing a Google search. Try entering the make and model of your specific notebook.. Who knows, you may get lucky and find a link with how-to photos.
DC jack replacement is easy however requires a bit care since its mounted on the mainboard. Desolder the old DC jack. Solder the new one firmly. Dont keep the soldering iron too long on the PCB as it will damage the lines and will deform the DC Jack. You can get DC jack very low cos from local repair stores or you can order from Toshiba parts depot (800-524-8338) Please post your question if you need further assistance. Good Luck
The PCG-K37 (Sony VAIO Laptop) uses a DC Jack soldered to a two-wire jacketed (shielding) cable that is routed under the DVD (tray) and towards the back to the Voltage Board located under the Touch Pad (Mouse) via a white polarized plug. The wires are color-coded Red (+) and Black (-); a third black wire is NOT attached to the DC Plug, but is used as a grounding wire for the Voltage Board to the LCD Hinge MOUNT only. Remove the battery and DC plug (AC Adaptor Wire) from the laptop first, before going any further.) To access the DC Plug requires removing the Keyboard Hood (houses the stereo speakers & power button) carefully by prying up from where the F-Keys (top row) are. There are four (4) slots: above the "Delete Key," and "F10" and "F4" and "ESC Key," and you will have to press these keys to see the pry slots for a thin blade screw driver to fit. The "Hood" pops up gently and is connected by a thin strip "Wire Cable" through the aluminum keyboard shield down to the motherboard. The "Wire Strip" cable is held in place on the Power Button Board by a sliding pressure retainer (Tan in Color) - it slides away (approx 1/8 of an inch) from the circuit board to let go of the cable. (To re-attach: make sure the retainer clip (Tan in Color) is up before sliding in the wire cable strip and push the retainer back in by applying pressure on both ends to seat it.) With the Keyboard Hood out of the way; remove the keyboard (3 screws only) and set the screws aside. The keyboard swings toward you and the wire connector cable for the keyboard is attached to the motherboard the same way the Hood is connected - a larger pressure retainer clip. With the keyboard out of the way; the aluminum shield must be removed. There are ten (10) screws holding this shield down, so please note which "length" screw goes where is should because putting the longer screw in the wrong place may damage something when it bottoms out. Next is removing the laptop Palm Rest (it contains the touch pad) and there are two screws easily missed near the touch pad on top; the rest of the screws are accessable when you close the lid (LCD) and flip the laptop up-side-down. Unscrew each screw one at a time and flip the laptop over to drop out each screw individually to catch them in your hand. Look for the tiny arrows to locate the screws and don't forget to lift up the battery door to get to the two (2) tiny screws, too. There should be a total of thirteen (13) of these screws and again please note the difference in lengths and where they go. Once you have all screws accounted for; set the laptop right-side-up and lift open the lid (LCD) carefully because the latch catch is hooked. (Slide the latch hook to open.) With the Lid open, you will see a thinner wire cable (white) attached to another pressure clip - it's the touch pad cable attached to the Voltage Board; release it just like you did with the keyboard cable and you can start lifting the Palm Rest up and away from the laptop case to expose the motherboard. At this point, you can see the DC Jack in the back right side corner. To get more room to manuver around, you may remove the DVD by opening the Hard Drive Bay Door and removing the two (2) tiny, short screws near the bottom of the hard drive (no need to remove the HD). The DVD slides out. Looking again on top of the motherboard, you will see a glide rail for the DVD and a metal shield covering the DC cable; remove the screws carefully and note the lengths again for proper placement. The next trick is to only move one LCD hinge out of the way, so it is important to secure the LCD in a way so that the one remaining hinge is NOT DAMAGED during this repair process. There are three (3) screws holding the hinge to the laptop case and that third screw in in the back of the laptop between the DC Jack and the modem's phone (RJ-11) jack. There is a hold-down bracket to secure the modem jack and the DC Jack; only one screw keeps it there. After getting the hold-down bracket out of the way; the DC Jack slides up and out. Remember how the DC Jack was positioned because putting it back in up-side-down makes it hard to plug the AC Adaptor in for laptop use on AC power. Use heat-shrink tubing and your insulators and avoid using electrical tape after soldering the two wires onto the new DC Jack. Also remember that the RED WIRE is soldered to the Center Post connector. Reverse the disassembly listed above to re-assemble. If you think this was tough, now you know why Technicians charge a minimum of $99 to do this job. But at least you now know that the DC Jack is NOT attached to the motherboard and the motherboard does not require complete removal just to get to the worn-out DC Jack. And YES!; DC Jack do wear out because the Adaptor plug is pulled on sooooo many times that the DC Jack take the abuse more than the plug does; and that's because there is more stability built into the plug than the DC Jack. One additional note: the Keyboard Hood connector cable is usually the first thing people damage accidently by folding the crease too many times. Wires inside this "tape" will break just like bending and twisting solid thicker wires will break. The replacement part is found on the Sony Parts Website for about $10 plus S&H. You will know you need it replaced when you can not seem to keep the laptop "ON" or the HD & Power lights fail to glow or you still can not get power to recharge the battery. The circuits for these functions run through that flat tape wire cable to the Keyboard Hood. Good Luck! (I say that because it will take up your entire evening, take up your entire dining room table, and wear thin the nerves of your spouse who will be very concerned about that table you are using to venture on!) Oh, and one more thing... Unplug the telephone as distractions should be avoided until you finish putting everything back together (or you WILL forget things).
Hi, by dc power jack, if you mean the one at the back of your toshiba laptop, to replace, you may have to completely disassemble the unit and expose the back of the printed circuit board. This would involve removal of several small screws, panels, brackets, devices (hd. kb, cd, etc), connectors, cables. The screws would normally be small philips + but others might require a torx driver. Once the back of the main pcb is exposed, you can proceed to desolder the jack. normally there are 2 or 3 solder points. Simply insert the new jack and solder in place, reassemble and that should do the trick. However, if you are not comfortable with disaasmebly and soldering, it might be to your advantage to let somebody technically trained to perform the replacement for you. Hope this helps. Please let me know how it turns up. Regards.
You can download a .pdf service manual from here:
It is a multi-part download so make sure you get all four parts to the manual before you try to open it. (if you need WinRAR to unzip the files you can get a demo at download.com)
The service manual has instructions and photos on how to disassemble your laptop.