Comments on: Toshiba Satellite M35X A75 power jack problem

By: CS Thampy

CS Thampy — Fri, 20 Sep 2013 06:34:05 +0000

I have a Thoshiba laptop L300. It works well without connecting power code up to the backup time. If connect the power code then the laptop stuck or suddenly off or some scratch shades appearing on the screen and stop working.

By: YY

YY — Sun, 21 Jul 2013 23:43:51 +0000

I just repaired my neighbour’s A70 notebook with the power jack problem together with the pushed-in power button problem. I have a pretty good theory of WHY the power jack problem occurs. I found out that the solder joint at the positive pin has eroded away, leaving the whole power jack movable when pushing in and pulling out the power connector. I re-soldered the positive pin to the motherboard and thought that I had fixed the problem. I assembled the notebook and when I attached the power input the A/C D/C adaptor beeped, indicating a short-circuit. I took the motherboard out again to examine and found out that because of my amateur soldering technique, I had made a bigger ball of solder than most professionals the it touched a metal part of the top cover when the top cover was put back on top of the motherboard and caused the short circuit. The ball of solder showed a flat surface at one side of the spherical ball of solder indicating the electric arc caused high temperature which melted the solder while short-circuiting. So I used the solder gun to remove a little bit of the solder ball and re-assemble the notebook and it worked. I accidentally discovered the reason why so many other users had the same problem. The close vicinity of the positive pin solder to the metal part of the top cover caused electric arc to jump continuously or occasionally across the air to cause high heat which melted the solder. I then took the notebook apart again and use electric insulating tape to cover the soldered area of the power jack, hopefully will avoid the electric arc to happen. Hope this information helps. As for the pushed-back power button issue, I used super glue to attach the top rectangular part of the button to the back of the top cover and it worked perfectly.

By: jooo

jooo — Thu, 15 Nov 2012 03:38:41 +0000

1)my toshiba l755 it was shut down in unexpected ,but not every time, around 10%.(mostly on start up the window(98%)).i thought it hv some loose bits on my adapter,so i put on my battery. but it was still happening !! but not much(5%).

2)my lp was automatically start window when i open the lid(90%).it’s not window resume,it’s really start up after i turn off.

all in normal condition(even thought the problem happened)

power led-light up but no blink.(light off when it’s turn off or automatically shut down)

battery led-light up but no blink.

adapter led-light up but no blink.

By: simba

simba — Tue, 06 Nov 2012 11:59:31 +0000

my toshiba L300 laptop will not display anything when power adapter is connected, but has no problem when working from battery, what do i do

By: cj2600

cj2600 — Sat, 21 Jan 2012 08:07:13 +0000

In reply to Gia. @ Gia,

The difference with my machine is that it charges when powered down, but if the PSU is connected when booting it can shut down and then reboot itself. This can also happen at random intervals after / if I get to login to Windows. Then it seems to happen in a loop â€“ SHUTDOWN/ RESTART/ SHUTDOWN/ RESTART/ LOGIN/ SHUTDOWN/ RESTART etc etc. Seems to run without a problem on battery itself. Is this more than likely an issue with the power supply also?

Here's something to try. Remove the battery and start the laptop just from AC adapter. Now wiggle the power plug inside the socket. Does it shut down when you wiggle the plug? If yes, it could be a problem with the DC jack.

By: Gia

Gia — Sat, 21 Jan 2012 03:42:42 +0000

I have the same problem as post #730.
The difference with my machine is that it charges when powered down, but if the PSU is connected when booting it can shut down and then reboot itself. This can also happen at random intervals after / if I get to login to Windows. Then it seems to happen in a loop – SHUTDOWN/ RESTART/ SHUTDOWN/ RESTART/ LOGIN/ SHUTDOWN/ RESTART etc etc.

Seems to run without a problem on battery itself.
Is this more than likely an issue with the power supply also?

By: cj2600

cj2600 — Thu, 29 Dec 2011 20:07:20 +0000

In reply to steg. @ steg,

Could we hardwire the power brick to the board?

Probably you can try this trick: http://www.laptoprepair101.com/laptop/2006/05/27/failed-laptop-power-jack-workaround/

Say for example if I wanted to â€œconvertâ€ the laptop to a tablet and mount in my kitchen?

What do you mean by "convert" to a tablet?

By: steg

steg — Thu, 29 Dec 2011 06:27:47 +0000

My Toshiba has been dead 3-4 years now with this precise issue.
I tried new battery, new power brick…nothing.
I work at a company that builds desktops and pcbs, and had a tech follow the instructions. He got the laptop working for about a month before I had the same failure reappear.
I hate to toss out a laptop where everything works.
Could we hardwire the power brick to the board? Say for example if I wanted to “convert” the laptop to a tablet and mount in my kitchen? Or any ideas at alternate uses besides scrap?

By: Dylan Caamano

Dylan Caamano — Wed, 28 Dec 2011 23:43:12 +0000

You guy’s (I mean that about the females also Just my way of talking)are lifesavers and your solotions are right on THANK YOU
If I wasn’t disabled and surviving on a $480.00 check for s month I would definitlly Donate and will in future when i run into some xtra cash this is not somthing I will forget about as if I didn’t get the LapTop fixed I would be out in the street due to power adapter broke on my freinds computer when I was useing it.To all the people who ain’t livin on peanuts these guy’s deserve a cash bump. just my opinion though.

Thanks You Very Much
Mr Dylan D Caamano

By: cj2600

cj2600 — Thu, 20 Oct 2011 15:40:50 +0000

In reply to nash. @ nash,

why take it apart ?1 all what you have to do is make a USb connection using a the male part and cut the tip from the adapter. connect the red + black in the usb cable to the white and black in the adapter. keep in mind to keep not to cut both shot just in case you want to change your mind and want the adapter tip again.

I have no idea what you are talking about!