Same issue i was faced after this trick working fine but I didn't not repaired any key... Just removed the power strip key and inserted again it working....
this is hardware issue sometimes you can fix it by keep turn off and on while plugged several times to warm the hardware (I fix mine doing this), some other video also show they fix it by hot blow the chip inside. could be loose soldering because overheating too often while using it who know after all this is often happening to Xiaomi phones with budget cut to give you higher performance for lower price
Sir after seen your msg I understood you know more about this problem my problem is redmi 9 power green mobile is not turning on it's showing the Mi logo vibrate again and again not opening even after reboot when I consulted the mobile shop they said show to the redmi stores you need to change the software....what I want to know is if I change this software do they need to restart the mobile will I loose my all data in the mobile please give me reply back sir 🙏
I think this is a software related issue after miui 13. When phone heated too much it started bootlooping. Have the same problem. When it happens leave the phone for 2 min then fastboot by pressing volume down and power key. If the phone stuck at fastboot apply same process.
Esa jab bhi hoo thodi der ke liye phone ko blimp hone doo 5 min baad volume up and switch on button ko sath pe prees karoo fir reboot kar doo uske baad khud hi fix ho jayega ye kholne ki jarurat nahi hai phone koo jab phone overheat ho jata hai tabhi esa problem aata hai
Redmi 9power Hai switchoff Karene ke bad switch on nahi hota hai battery canecasan chhonane ke bad punha lagane par switch on ho jata hai . Switchoff karne ke bad whi kam dubara karna panta hai
mera vhi same problem lekin repraing pe motherboard change kharna na padega bolrahahain meine change kardo bola tha lekin abb phone redmi thak vhi on nahi horahainbolraha hain kya karu vhaijan
Or mother board change kiya phone sab thikhain lekin display par light hi nahi araha hain bolraha hain avh main kya karu kuch solution do vayya jii main nepal se hu
Or cpu vhi revolve kiya nahi huwa bhol raha hain dusra mother board lakhhain check karta hu bolaraha hain nepal pe motherboard ka 12000 padta hain redmi note 9
