To measure the XL6009E booster chip, first measure whether each foot has a short circuit to the ground, if yes, broken, if not, weld to the PCB board to measure the voltage, if there is voltage in the input foot and EN(enable foot), then there should be a boost output, this booster chip generally will not burn, if there is a burn, it is generally your load short circuit, if the load is no problem, That's FB. Those two resistors are wrong.
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Multimeter: Multimeter is also known as multimeter, multimeter, three-use meter, multiuse meter, etc., is an indispensable measuring instrument in power electronics and other departments, generally to measure voltage, current and resistance as the main purpose. Multimeters are divided into pointer multimeters and digital multimeters according to the display mode. Is a multi-function, multi-range measuring instrument, general multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio electrical equality, some can also measure AC current, capacitance, inductance and some parameters of semiconductor (such as β)