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Toshiba Satellite L355-S7812 keeps restarting with AC Adapter plugged in


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#1 Optionbaby

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Posted 18 February 2013 - 11:17 AM

When using the AC Adapter and in normal mode the laptop restarts itself
every 20 to 40 min. The battery will only last around 1:45 min. and
there are no problems with battery only. Also, in Safe Mode and using
the AC Adapter there are no restarts. I have tried another similar AC
Adapter and the same thing happens. Again no problems in Safe Mode. What
could be causing this?



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#2 Optionbaby

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Posted 18 February 2013 - 11:18 AM

Sorry, one hour and forty five minutes on the battery.



#3 Nanobyte

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Posted 18 February 2013 - 01:10 PM

Have you tried running without the battery?  I don't know the relevance of Safe Mode but perhaps the battery is defective and charging it ultimately leads to a hiccup in power?



#4 Optionbaby

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Posted 18 February 2013 - 01:18 PM

I have tried without the battery and it still restarts.



#5 Nanobyte

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Posted 18 February 2013 - 05:04 PM

I can't think of anything other than the power supply/charger circuit in the laptop is defective.  There's not a lot of difference between normal and safe modes.  In safe mode there may be less hardware running fully.  I'd monitor the voltages and temperatures to see if there are any clues there but that's about it from me.



#6 Optionbaby

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Posted 19 February 2013 - 08:05 AM

I appreciate the tips. I just don't understand why the laptop does fine in Safe Mode.



#7 wizardsmagic007

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Posted 19 February 2013 - 05:20 PM

Is any dust clogging the ventilation?



#8 Optionbaby

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Posted 20 February 2013 - 08:24 AM

No, there is not any dust. It is not getting hot. It seems to be in the power management. Could it be the DC jack?



#9 Nanobyte

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Posted 20 February 2013 - 10:12 AM

I suppose it could be the jack (losing contact and briefly disconnecting power) but there is the issue with Safe Mode.  I suggested that the power supply/charger circuit in the laptop could be the problem.  While I can see that the loads in normal and safe modes may be different and affect the electronics differently, the DC jack is more likely to behave the same whatever mode the laptop is running in.  Unless anyone has concrete ideas, the only choice may be to have a tech look at it.  Substitution is often the best way to resolve issues.






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