Acer Aspire S7-391 Motherboard burned chip

[realdealcomputers]

I have a dead acer aspire s7-391 with a burned chip by the dc jack in and believe it is causing my issue of no power.

Looking at the schematics for the motherboard which is Model 48.4WE05.011 the location of the burned chip is @D3801 with white lettering CH2h B15A. Schematics say part number is P6SBMJ27APT-GP.

I contacted digikey support and they said the part appears to be obsolete and they where unable to locate a substitute for it in there system.

Anyone know where else I can find this part and or substitute part that will work?

[piernov]

Re: Acer Aspire S7-391 Motherboard burned chip

This is a TVS diode, shorts when there is a spike above it's rated voltage. It's not required for the system to work but it is still a good protection device.
Any TVS diode with the correct voltage rating should work here. Take a look at the P6KE series for example, P6KE27A.
Make sure that the AC adapter works properly and doesn't produce voltage spikes.

Also note that there is a subforum "laptops & mobile devices" dedicated to laptop repair, this subforum is more dedicated to bad electrolytic caps and desktop motherboard.

[realdealcomputers]

Re: Acer Aspire S7-391 Motherboard burned chip

This is a TVS diode, shorts when there is a spike above it's rated voltage. It's not required for the system to work but it is still a good protection device.
Any TVS diode with the correct voltage rating should work here. Take a look at the P6KE series for example, P6KE27A.
Make sure that the AC adapter works properly and doesn't produce voltage spikes.

Also note that there is a subforum "laptops & mobile devices" dedicated to laptop repair, this subforum is more dedicated to bad electrolytic caps and desktop motherboard.

Thanks for the info! they where using a universal charger and I believe that is what caused it to burn. Removed the diode and it turned right on.