Hewlett-Packard TON-Q159 notebook power failure repair

Hewlett-Packard TON-Q159 notebook power failure repair

Hewlett-Packard TON-Q159 notebook power failure, 71 and 72 pins in add some tin, the fault perfectly repaired.

Machine model: Hewlett-Packard TON-Q159

Fault phenomenon:auto power off

Maintenance process: peer sent Hewlett-Packard TON-Q159, the tester found switch seconds off, occasionally the current can jump to 0.12.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 1.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 2.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 3.

So we simply tested all VCC, and found them all in a moment. First, look at HWPG. HWPG is disconnected or lost in seconds. HWPG participates in 3.3V, and 5V disconnection also meets auto power off. The synthetic BIOS also brushes, and the fault is the same.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 4.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 5.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 6.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 7.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 8.

Plug in Switch, the current runs 0.4 V, plug in memory,switch is the same.Touch xte booting up again, and touch it again and again.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 9.

This piece of touch can replace booting up,Capacitor, several resistors Diode value is normal.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 10.

Looking at these EC pin bit definitions, we can see nothing. Since we have touched booting up, let’s try two pin short-circuit,short-circuit to 71 and 72 pin, which can work normally on Switch. The problem is finally found.THRM_Maintor1 and dgpu_PROCHOT_EC ා these two signals manage the temperature.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 11.

Hewlett-Packard TON-Q159 notebook power failure repair Figure 12.

THRM_The source of maintor1 is OK, and the pull-up is normal. 71 and 72 pin are adding tin. Now that it is OK, the installation test shows that the fault is eliminated perfectly.