Thanks in advance for any help on this. I am starting to work on a battery damaged Pinbot mpu and want to source the correct components. I am wondering about the following:
1.) Several components are just labeled (b) and it is a blue axial component.
2.) When replacing capacitors; can I use a higher voltage as long as farads are equal? And what is the + - rating on these? One shows +80 -20%
3.) Sr8 and src6 are listed as the same but the other src components list a resistance and a capacitance rating.
4.) I believe I can use mc6821 where it shows 6820/6821.
5.) Some ic chips have additional coding after the numbers, does this mean anything as far as replacing the original? (ie 6821p vs 6820)

20181002_063732 (resized).jpg

The confusion on src6 is that it is listed in the manual as only a resistor pack. Same as sr8. Is this a mistake in the manual?

20181002_095342 (resized).jpg

Thanks for the clarification.