如何troubleshoot电路?

sH3n

当电板不能操作时要如何找出祸根？
平时我都靠找爆开的component.
请问要如何troubleshooting?

rothmans

你自己动手做的，还是买的？

fritlizt

原帖由 sH3n 于 5-10-2006 04:44 PM 发表
当电板不能操作时要如何找出祸根？
平时我都靠找爆开的component.
请问要如何troubleshooting?

multimeter是少不了。
用multimeter check看voltage, signal 等对不对。
还有check program 写得对不对。

heiha

sorry I can't type chinese very well.

You can start from Power site, check every IC power pins (normally 5v), if you know the signal of the IC can use ocsillascope to check the input and output signal. next can check all active devices ( Transistor, diode) desolder check more accurate.passive device not easy burn normally,but still need to check if no ic burn. Lastly is check track of the PCB. If the PCB is too old, some track may be ething. Just my opinion, Thx.