Good morning!
A customer just brought in an Honor MagicBook X 16 mod. BRN-F56, motherboard P/N Fermi_MB NB6269A_MB_V4, not working (no power LED, no charging LED, nothing)
He said he had been using an aftermarket power supply for a while, but noticed that it suddenly stopped charging and when the battery was completely dead the laptop would not turn on, even with the original (working) power supply.
On the power connector, on the motherboard side, I measure 20V.
With the thermal imaging camera I found a component labeled 2920J (TSOP5) that, when I supply power, increases the temperature by 3-4°C: I also noticed that there seems to be a small hole on its surface
The voltages measured are:
Pin1 = 19.77V
Pin2 = GND
Pin3 = 19.58V
Pin4 = 1.247V
Pin5 = 5.207V
All other components seem cool.
What else can I check ?
Thank you !!
Update: I checked again and what looked like a small hole was just dirt, maybe resin or flux, which I removed with a plastic tab
A customer just brought in an Honor MagicBook X 16 mod. BRN-F56, motherboard P/N Fermi_MB NB6269A_MB_V4, not working (no power LED, no charging LED, nothing)
He said he had been using an aftermarket power supply for a while, but noticed that it suddenly stopped charging and when the battery was completely dead the laptop would not turn on, even with the original (working) power supply.
On the power connector, on the motherboard side, I measure 20V.
With the thermal imaging camera I found a component labeled 2920J (TSOP5) that, when I supply power, increases the temperature by 3-4°C: I also noticed that there seems to be a small hole on its surface
The voltages measured are:
Pin1 = 19.77V
Pin2 = GND
Pin3 = 19.58V
Pin4 = 1.247V
Pin5 = 5.207V
All other components seem cool.
What else can I check ?
Thank you !!
Update: I checked again and what looked like a small hole was just dirt, maybe resin or flux, which I removed with a plastic tab