Redmi K30 Ultra No Power Issue: Hardware Repair & Jumper Solution

The Redmi K30 Ultra is a powerhouse, but like many high-performance devices, it can encounter a "No Power" or "Dead Boot" state. While software flashes often solve minor bugs, a device that refuses to turn on, vibrate, or charge usually points to a hardware failure on the motherboard.

In this guide, we break down a common hardware-level fix for technicians dealing with a non-responsive Redmi K30 Ultra.

Why does the Redmi K30 Ultra stop powering on?

Before diving into the soldering, ensure you've ruled out the basics:

• Battery Voltage: Ensure the battery is above 3.7V.

• Charging Port: Check for debris or damaged pins.

• Short Circuit: Use a DC power supply to check for a full or partial short.

The Hardware Solution: CPU/Power IC Jumper

As shown in the repair diagram, many "No Power" cases on the K30 Ultra are linked to a break in the communication line or power delivery near the MediaTek MT6889Z (Dimensity 1000+) chipset or the surrounding Power Management IC (PMIC).

Step-by-Step Repair:

1. Disassembly: Carefully remove the back cover and heat shields.

2. Locate the Target Area: Find the MediaTek IC (highlighted in the zoomed-in section of the image).

3. Identify the Jumper Point: Look for the specific resistor/capacitor highlighted by the red arrow.

4. Apply the Jumper: Using a fine-tipped soldering iron and thin enameled copper wire, bridge the connection as indicated. This often bypasses a damaged internal trace that prevents the boot sequence.

5. Clean & Insulate: Use UV mask (green oil) to secure the jumper wire and prevent it from shorting against the EMI shields.

Warning: This procedure involves micro-soldering. Only attempt this if you have the proper tools and experience. Incorrect soldering near the CPU can lead to permanent board damage.

Image Credit : Habu Tech 

Final Testing

After applying the jumper:

• Connect the board to a DC power supply.

• Trigger the power key and check if the current (Ampere) consumption fluctuates normally (typically 0.1A to 1.5A during boot).

• If the device boots, reassemble with fresh thermal paste to ensure the Dimensity chip stays cool.