Having problems with your Toshiba Satellite A75-S229 Notebook ?
Screen black & with no power
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\015 After completing an online purchase and trying to end session -\015\012the screen became black with a flashing white dash at the top of the screen,\015\012seemed like it was prompting me to do something\015\012now I am unable to sign on\015
1. Model: Toshiba Satellite A75 laptop LCD screen
2. Each test notebook computer LCD screen before shipment, 100% of the working conditions:
3.100% new high quality replacement Toshiba Satellite A75 laptop LCD screen
4. The Toshiba Satellite A75 inverter can be used for the other models and Inverter part No
5. Great after-sales service, laptop LCD screen, fast respond to your request
6. Toshiba Satellite A75 laptop LCD InverterDefective backlight inverter can effectively change the following symptoms:
Screen image, but the power light stays in
Flashing on and off of the screen between 1/2 to several seconds
The power indicator stays on, but no display and sound
Screen images, but LCD TV still has sound
Picture cycle on and off, as well as high-power LED lights
\015\012you can follow this instruction and try to your laptop to resolved the problem.
\015\012A bad connection between DC-IN power jack on the system board and the system board is a very common problem with Toshiba Satellite M35X and Toshiba Satellite A70/A75 notebooks. If your laptop is out of warranty, then you can fix the problem by resoldering DC-IN jack on the system board. If it’s still under warranty, it would be fixed at no charge to you.
- Laptop randomly shuts down without any warning. \015\012
- Power LED and battery charge LED start flickering when you wiggle the power cord or the AC adapter tip on the back or your laptop. \015\012
- The battery will not get charged. \015\012
- When you plug AC adapter, the laptop appears to be dead and there is no LED activity at all (DC-IN jack on the system board is broken).
\015\012Here is an example of Toshiba Satellite M35X power jack. The crack occurs between the DC jack pin and the system board.
\015\012\015\012\015\012In some cases the connection is good, but the DC jack is bad itself. You can find a new DC jack for Toshiba Satellite M35X and Toshiba Satellite A70/A75 laptops here. Search for DC jack M35X or DC jack A75.
\015\012How to resolder laptop power jack yourself.
\015\012Sometimes, after you replace the jack, you can see that the system board doesn’t get power at all. The battery will not charge and the power LED will not light when you plug in the AC adapter. So, here’s a possible explanation.
When a connection between the positive pin and the motherboard breaks (cracks), the power jack gets loose. You can feel it when you plug in the adapter plug. A loose power jack can damage the trace inside the hole in the system board. Take a look at the picture.
\015\012\015\012As you see, the positive pin goes through the hole in the system board and you solder it on the top side. Right? What if the trace between the top side and the bottom side is broken somewhere inside the hole? I’ve seen it before a few times. In this case everything looks nice and clean on the top side. When you plug in the AC adapter, you get normal voltage readings between “+” and “-“ pins on the top side, but the power DOESN’T go to the motherboard at all, because there is no connection between the top and bottom sides. Test with a multimeter if there is a connection between the top and the bottom.
If the trace inside the hole is broken you still can fix it. You can run a wire to connect the top and the bottom sides. Be careful not to short something on the board.
\015\012Here’s another solution to fix the power jack problem, it shows how to relocate the power jack outside the laptop base. Check it out here: Toshiba Satellite A75 failed power jack workaround.
\015\012When you repair a loose power jack, it’s a good idea to check the jack on both sides of the motherboard. When you remove the top cover from a Toshiba Satellite A70/A75 laptop you can see only points where the jack is soldered to the motherboard as it shown on the second picture in this post, but you cannot see the jack itself as it shown on the first picture.
Removing the motherboard from Satellite A70/A75 laptop is a good idea because the jack itself might has a broken “+” pin, as it shown on the picture below. If the “+” broke off the base, you’ll have to replace the jack.
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