Consider it a lesson learned and remove and replace the meter with a new meter. The burned components are merely a symptom, the root cause should be apparent. You also may want to start with the Instruction Manual which describes how to measure DC current and note the meter was never designed to measure AC current.i connected my mastech mas830l directly to the wall outlet to measure amperage thus burning.. now what should i do?
iYes, not a good idea. Maybe you can contribute to this thread someday: https://www.electro-tech-online.com/threads/what-was-your-worst-injury-as-a-hobbyist.151918/
Back to the present, presumably you want to try to repair the meter (MAS 830L ). Q1 is a transistor. That meter is quite popular and its schematics are on the internet. Here is one of several examples: https://airborn.com.au/circuits/mas830l.gif
It is possible a generic transistor and the other component values are also available.