Рет қаралды 20,102
A Fluke 15B multimeter that came from picking up trash.
Over the years, the outer shell became very brittle and chipped away while polishing, so the front outer shell could only be replaced.
The red wire was connected to the negative pole of the power supply of the previous motherboard. The test machine broke down and smoked directly. Fortunately, the main parts were not burned out. I replaced the rectifier diode and repaired it.
Replace the 3.2V lithium iron phosphate 14500 battery to solve the hidden danger of leakage of ordinary batteries after a long time, and the functions are fully restored.