Share the precautions for old ironmen to supplement and replace op amps and capacitors_vehicles, vehicles

Share the precautions for old ironmen to supplement and replace op amps and capacitors

September 5, 2024

Thank you to the masters such as Feixue Outside the Great Wall and Fan Hui for leading the way (poisoning) and following their strategies, it was a one-time success. There are still a few points to pay attention to:
1. The tools must be complete, and it is best to have a ratchet wrench, otherwise the two fixing screws on the inner side of the power amplifier module will be difficult to remove and it will be difficult to install. I simply bought a set of wrenches from a certain treasure.
2. For partners who don’t have a hot air blower, it’s best to ask the electrical repair master to help replace the operational amplifier IC. It’s fast and good, 20 yuan in Guangzhou.
3. Pay attention to the thickness of the pins when buying a capacitor. The capacitor I bought was too thick. The master couldn’t get through the circuit board after working on it for a long time, and he didn’t dare to dig the holes in the circuit board too big. Finally, he went home and sharpened the pins with a blade before soldering them. On, replacing the capacitor takes the most time.
4. When the original capacitor is discharged, it is quite scary, with sparks flashing. It is said that it is safer to use a high-power resistor or a light bulb to discharge it.