Summers are hot and hot and wet, the hardest season for computers, and problems come to mind! Today, the store received a saver r720 game book, which the client described as a computer that could not turn on when the laptop was in the water, pressed the buttons and did not react, used normally for less than two days after the repair of the nearby repair shop, and found smoke in the air and a distinct smell。
Burn position on main board (head)
Once again, the repairs were told that they could no longer be repaired, and it was recommended that the board should be sold jointly, that the offer should be too high and that the offer should be dropped and that it would then arrive at the shop. Dismantling and burning a large hole, other than that, no anomalies were observed. Measuring the main power supply, 19v short circuits, and the mass processor power supply with several euros of resistance, good signs, and probably saved
Burn position on main panel (reverse)
First, the burned position is processed, followed by the following figure, and the 19v resistance value of the main power supply is normal。
This board is already half-repaired with drawings and dots, and after checking that there are no other special problems, offers to the user to start repairing! Burning the map and dots of the position, as follows:
Bitmap
As can be seen from the chart, the associated circuits and lines are still relatively simple, so just get it done! This is followed by the following:
The processor's power chip, driver's pipe, power yard, all of which are replaced, the currents jump normally after the discharge, and the oscillator volume is waved at the three electrical input end and normal。
Get green oil solidified and continue to protect the connection。
Loading tests, running processor load tests, waiting for an hour, everything else is normal, and the maintenance is over。
