mengatasi toshiba c640 mati total 3.3v dan 5v tidak keluar tegangan

To fix a dead Toshiba C640, you can replace the tube capacitor with a tantalum capacitor. First, measure the required voltage on the 3/5V IC, VIN (most other laptops that use the same IC "TPS51125", EN0 is also a required voltage). After VIN enters the IC, VREG3 and VREG5 exit. At this point, we can assume the IC is working properly, but it's also possible the IC is damaged. For the easiest solution, we'll take the easiest approach first, replacing the tube capacitor, as many problems are with the capacitor itself. The method above is a simple way to measure or execute a 3/5V that isn't outputting. There are actually many more measurements on the IC pins that need to be taken, but I'll use a simple example. (THIS METHOD MAY BE DIFFERENT FOR OTHER IC TYPES) I apologize for any misinterpretations or mispronunciations, as we're both still learning. Thank you.