How to fix Bootloop on Poco M3 / Redmi 9T – Problem solver

November 16, 2021

Some suffer from a boot loop problem for Poco M3 and Redmi 9T, and many may not know that they are the same phone, only the names are different! They were announced in November of the year 2020, and they are considered two phones of the middle price category, with a good processor Snapdragon 662 with 4 or 6 GB RAM, a 48 + 2 + 2 megapixel triple camera, with a 6000 mAh battery, supports fast charging and reverse charging,

What is the cause of the black screen problem or the final stop of the POCO M3 and REDMI 9T?

According to smartphone repair expert Ried Bin, the problem occurs after the arrival of a system update to the phone, and because of the update, the phone automatically enters EDL Mode, and the reason for the Poco M3 or Redmi 9T phone to enter this mode is the automatic activation of the link between the two points 1.8 volts, and 1.2 volts line-disconnection protocol activation point, which is fed to the RAM (DDR), which is very simple and not that complicated.

Ried also said that there is a second reason, which is that the shield referred to in the picture in the red box, covers components that do not accept re-discharging, and due to accumulations caused by the high temperature of the phone components, and this happens after a certain system update, the latter increased pressure on The mobile’s hardware, but after opening the shield, we find a jack that connects to one of the two testpoints, so it remains charged and contributes to activating the 1.2 volt line cut protocol for the ddr RAM, which causes the phone to enter EDL Mode, which we consider a manufacturer defect due to the absence of a slot Ventilation on the shield or the so-called shield.

How to solve the problem of the black screen or the final stop of the POCO M3 and REDMI 9T

The way to fix or solve the problem of the black screen and the final stop of the POCO M3 and Redmi 9T phone, is by opening the phone and lifting the shield or shield permanently while discharging the charge, or by connecting the electrodes of the capacitor with tweezers (positif to négatif), or by heating the area after lifting the shield for a period Only two or three seconds, and then try turning on the phone and installing the shield again, and try restarting, or putting the charger directly to avoid all problems.
You may also find on the Internet some other patchwork solutions, such as changing some parts or so, but we will shorten your time by telling you that all of these solutions are useless, so try this method and we always advise you to seek the assistance of maintenance professionals, to avoid damaging your smart phone, and you can give it this The article is to see this simplified explanation, and Poco and Xiaomi have launched a new update, to avoid this problem happening on their smartphones.

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