Toshiba L300 Image Issues when entering OS
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Re: Toshiba L300 Image Issues when entering OS
Also show us what you are trying to solder with.
If solder is causing the short, it needs to be removed with a suitable soldering iron plus some flux and maybe solder removal braid.
If the short is being caused by damaged copper bridging the very small gap between the + and - pad areas, DO NOT try removing it by scratching into the PCB. Get under it with a sharp sewing needle and lift it upwards.Comment
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Re: Toshiba L300 Image Issues when entering OS
Also show us what you are trying to solder with.
If solder is causing the short, it needs to be removed with a suitable soldering iron plus some flux and maybe solder removal braid.
If the short is being caused by damaged copper bridging the very small gap between the + and - pad areas, DO NOT try removing it by scratching into the PCB. Get under it with a sharp sewing needle and lift it upwards.
Removed CPU and if I mesure continuity , all pads are shorted to ground.
If I mesure resistance, I get the same 0.6 ohm...
I have this soldering station :
http://www.aoyue.com/en/ArticleShow.asp?ArticleID=435
It sems it's 70W .
Gonna try to remove that solder and clean that area up and I'll send a photo.
PS : removed the solder the best I could .pict followingLast edited by magneh; 09-09-2014, 08:34 AM.Comment
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Re: Toshiba L300 Image Issues when entering OS
It depends which heater type the iron uses. My aoyue 936A uses a real Hakko heater, about 60W. Other clones use a China made heater that might be as low as 40W.
You also need a heavy tip like a large chisel or a K shape tip, its what I use.
You didnt mention what tip you are using.Comment
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Re: Toshiba L300 Image Issues when entering OS
It depends which heater type the iron uses. My aoyue 936A uses a real Hakko heater, about 60W. Other clones use a China made heater that might be as low as 40W.
You also need a heavy tip like a large chisel or a K shape tip, its what I use.
You didnt mention what tip you are using.
My tip is a 900m-T-K shape K and the heater is the one that came with the unit.
I suspect it's a weak heater and I never changed it.
Hope that I'm still able to recover this moboComment
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Re: Toshiba L300 Image Issues when entering OS
Thanks for all the inputs Rievax.
Removed CPU and if I mesure continuity , all pads are shorted to ground.
If I mesure resistance, I get the same 0.6 ohm...
I have this soldering station :
http://www.aoyue.com/en/ArticleShow.asp?ArticleID=435
It sems it's 70W .
Gonna try to remove that solder and clean that area up and I'll send a photo.
PS : removed the solder the best I could .pict followingComment
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Re: Toshiba L300 Image Issues when entering OS
From what I understand , I should remove the copper between the contacts right?
Never done that before, gonna try to find some info about tools and technique for thatComment
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Re: Toshiba L300 Image Issues when entering OS
Any stray copper fragments need to be removed from the gap surrounding the rectangle shaped area that was under the old capacitor. A large sharp sewing needle will do the job. Then confirm that the short is gone.Comment
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Re: Toshiba L300 Image Issues when entering OS
I took a close look at your last 2 photos. You are trying to scratch through copper that is nowhere near the gap you where supposed to clear of stray copper fragments. Why?
Your photo in post 24 showed possible shorts in just a few places in the gap.Comment
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Re: Toshiba L300 Image Issues when entering OS
Well it seems I didnt quite understood how to remove those copper fragments.
Thought I would have to remove all the copper between contacts.
RIP Mobo
Think I have another one with the same issue.
I think now I have a good idea how to do it and how to DO NOT.
Never ruined a board before :/
Thanks!Comment
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Re: Toshiba L300 Image Issues when entering OS
Wow, you gouged out pieces of the board like you were trying to cut right through it!"Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: Toshiba L300 Image Issues when entering OS
The last picture rievax_60 posted looks good. Maybe you can save it if you check the right places... hopefully you have not cut through any internal layers."Tantalum for the brave, Solid Aluminium for the wise, Wet Electrolytic for the adventurous"
-David VanHornComment
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Re: Toshiba L300 Image Issues when entering OS
yes, thats right, if he has not gouged down to the next layer, It should be ok with some repair to the + print that has been cut through. It would be good practice before risking the next laptop repair that was mentioned.Comment
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