Question about Toshiba Satellite U305-S7448 Notebook
If the replacement charger was not exactly equivalent, including polarity, you probably toasted your machine.
Posted on Mar 07, 2017
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Posted on Jan 02, 2017
it really sounds like a hardware problem for which probably your motherboard may have to be replaced but i was checking on the website for bios updates and I noticed the newer bios is not v3.30 but version 4.40. posted on
I think it's probably worth it to give it a shot whith this new Bios and see where it would take you
make sure to back your data and that your power is constant while you're doing the bios flashing!
download your bios update from here:
Posted on Oct 07, 2008
Get another laptop.
The A135 is a lemon.
Problem is either with the dc jack on the board or more than likely the motherboard is damaged.
I've repaired a number of A135's and 95% of the time motherboard had to be replaced.
Sorry for the bad news, but I hope this helps.
Posted on Mar 02, 2009
It sounds like the connector from the A/C adapter to the motherboard is loose or the inside of the adapter plug that attaches to the motherboard is defective.
Posted on Jan 08, 2010
Testimonial: "Thanks for the super quick reply. I was thinking along those lines. I'll take both units apart and compare them. Cheers Paul"
Try removing / swapping / reseating the memory.
Try booting with one stick only, if the top slot doesn't work, try booting the bottom slot. Try both sticks.
Let me know what happens.
Posted on Apr 04, 2010
Testimonial: "First step in a series to diagnose. On the journey. Useful thanks."
I seem to have the same problem. I have an a105-4134. Ive had since June of 2006 and ive kept it clean and have replaced several components throughout its life.
I was working on it few days ago until it just shut off. Confused, I press the power button thinking maybe the power adapter wasn't plugged all the way in and the battery depleted and it shut off. So now the computer will now power on. It lights up but shuts off within 1 second. Keeps doing this over and over.
My first thought was the dc jack as ive read it is common to be faulty after long use. I ordered a new one and unfortunately it was not the culprit. I then suspected the cheap aftermarket power adapter which replaced the dead oem power adapter. Bought a new one and experienced the exact same symptoms yet again.
Now I'm digging deep removing all components one by one. With each one I remove, I gain a few seconds of time that it will stay on before shutting off on its own. I powered it on with only the motherboard and cpu and it does the same thing.
From the original problem in this post, the cpu and motherboard were swapped out and same symptoms still occurred. This being the case, the only component left undiagnosed is the power board itself.
This is where I noticed that the computer will power up and run on battery power. The adapter plugged in will charge the battery but not power the computer while running. With this discovery it means that it cannot be any of the main components causing the problem.
Back to the power board, an obvious problem area seeing how this is tied in with power components. From the looks of it, it seems like a simple switch board but i may be wrong. My next step is to order a new power board. I will let you all know how it turns out.
Posted on Apr 13, 2010
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