imperialboard89
New member
Hi to everyone,
I am facing a short circuit issue on a circuit board and would like to share my situation to seek advice and suggestions from the community.
I have identified the short circuit on the PPVBAT_G3H_CHGR_REG line, and I have proceeded to isolate the circuit by removing R7060 and Q7040. Currently, I am focusing my analysis on the capacitors in the upper right part, specifically from C7050 to C7055 and from C7090 to C7099 (See here). Despite a visual inspection, I have not found any obvious physical issues under the microscope.
To proceed further, I plan to inject current into the short-circuited line. I want to clarify that I have a Thermal Camera. However, as this is my first time performing this procedure, I am uncertain about the voltage and current settings on the power supply. Considering the nominal voltage of the line is 13.1V, I am thinking of setting the voltage to that value, but before proceeding, I want to ensure the correct setup.
I appreciate any advice or information you can provide on this matter.
Thank you in advance.
P.S. I have also replaced the U7000 chip, but the short circuit persists.
I am facing a short circuit issue on a circuit board and would like to share my situation to seek advice and suggestions from the community.
I have identified the short circuit on the PPVBAT_G3H_CHGR_REG line, and I have proceeded to isolate the circuit by removing R7060 and Q7040. Currently, I am focusing my analysis on the capacitors in the upper right part, specifically from C7050 to C7055 and from C7090 to C7099 (See here). Despite a visual inspection, I have not found any obvious physical issues under the microscope.
To proceed further, I plan to inject current into the short-circuited line. I want to clarify that I have a Thermal Camera. However, as this is my first time performing this procedure, I am uncertain about the voltage and current settings on the power supply. Considering the nominal voltage of the line is 13.1V, I am thinking of setting the voltage to that value, but before proceeding, I want to ensure the correct setup.
I appreciate any advice or information you can provide on this matter.
Thank you in advance.
P.S. I have also replaced the U7000 chip, but the short circuit persists.