When you have a full short its usually on a VDD_MAIN or VDD_BOOST line. if you connect the device to your dc power supply you will see a big current draw and the motherboard is getting hot.
Step 1 : Check on the line of you have a short by taking the multimeter and put the red probe on ground ( for example a screw hole or NAND IC ) and the black probe on the line you want to measure.
In beeping mode it must beep if you have a short to ground , otherwise you will have a 0.000 reading or very low resistance on the multimeter.
Step 2 : Now that you know for sure you have a short to ground you can try to find the heat, we are doing that by injecting voltage in the line that is shorted. Use multimeter probes and connect them with a DC Power supply. Set voltage first on 2V and if it's needed you can go to 4V. Put one probe on ground and the other one on the shorted line.
Now check if anything gets hot. You can use a thermalcam, alcohol, freezespray of rosin to do this methode.
Step 3: If you have found the component that is getting hot, you can remove that one and check if the short is gone.
Step 1 : Check on the line of you have a short by taking the multimeter and put the red probe on ground ( for example a screw hole or NAND IC ) and the black probe on the line you want to measure.
In beeping mode it must beep if you have a short to ground , otherwise you will have a 0.000 reading or very low resistance on the multimeter.
Step 2 : Now that you know for sure you have a short to ground you can try to find the heat, we are doing that by injecting voltage in the line that is shorted. Use multimeter probes and connect them with a DC Power supply. Set voltage first on 2V and if it's needed you can go to 4V. Put one probe on ground and the other one on the shorted line.
Now check if anything gets hot. You can use a thermalcam, alcohol, freezespray of rosin to do this methode.
Step 3: If you have found the component that is getting hot, you can remove that one and check if the short is gone.
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