Repair of Raytheon tr-g150t notebook no booting

Repair of Raytheon tr-g150t notebook no booting

Raytheon tr-g150t notebook no booting, first scraper maintenance, scrape to the common point diode value becomes normal, power does not Short circuit;U41’s 1 pin VA pin is disconnected, make up.Isolate the Current protection tube pq47 pq18, and connect the DS pin of pq30 pin directly to make them fully connected.Configure me, brush BIOS program, and then boot, normal.

Machine model: Raytheon tr-g150t

Board No.: 6-71-n15r0-d02a

Fault phenomenon: notebook no booting

Maintenance process:
A Raytheon notebook, the fault is the notebook no booting, the motherboard was burned like this.

Raytheon tr-g150t notebook no booting maintenance Figure 1

Raytheon tr-g150t notebook no booting maintenance Figure 2

The burning is too serious. The owner said to replace the motherboard. I took it here for maintenance. I scraped it first and didn’t want to replace the motherboard again.

Raytheon tr-g150t notebook no booting maintenance Figure 3

The wider the scraping range is, until the common point diode value becomes normal, the power is not Short circuit, then standby 0.23, standby chip high temperature, power off 3.3V,Inductor,Short circuit,Current heating test, EC high temperature, remove diode value and return to normal.

Raytheon tr-g150t notebook no booting maintenance Figure 5

EC chip it8587e with program, after replacement, plug in standby normal, 3.3V, press Switch no power on.
There’s also a break.After opening the drawing, it was found that vdd3 at one end of pr435 was disconnected.

Raytheon tr-g150t notebook no booting maintenance Figure 6

Connect Jump wire to Jump wire battery.

Raytheon tr-g150t notebook no booting maintenance Figure 7

U41’s 1 pin VA pin is disconnected, make up.

Raytheon tr-g150t notebook no booting maintenance figure 8

Raytheon tr-g150t notebook no booting maintenance Figure 9

Isolate the Current protection tube pq47 pq18, and connect the DS pin of pq30 pin directly to make them fully connected.

The effect picture after processing is shown in Figure 10

Raytheon tr-g150t notebook no booting maintenance drawing 11

Plug in power on, the current trot all the way, run code is not light.The whole board VCC of the measurement board is all available. Configure me, brush the BIOS program, and then turn on the machine. After a long time absence of Raytheon logo, it is tested in the system that everything is normal except that it cannot be charged. The maintenance is completed.

Raytheon tr-g150t notebook no booting maintenance drawing 12