hi
i have a rb sxt 5d
Burned parts in the transistor and input diodes that are not recognizable, and if anyone has a picture of the q1901 and d1901 parts,
thank you for sharing
Apparently the author doesn’t use google search very well.
Q1901- BC856B,215 -Small Sign PNP 250mW SOT-23 Transistor
D1901 BZX84C10/SOT23-GP SINYORK CO., LTD. Diode Zener BZX84C 10V 6% 410mW SOT23
http://www.mkesolutions.net/descargas/manuales_rb/RBSXT_5HnDr5_trouble_shooting.pdf
Good work 
thank you