I am troubleshooting my drive with the FSM and Sams compufacts.
I found that on the Atari schematic (Jerzey copied it as well) I am supposed to have three 4700uf 25V caps but I only have one 4700 and two 6800uf in those locations.
Sams compufacts show the two 6800uf but there was no technical update for the 1050 that I found that changes them out.
I also saw in a post that the C69 and C70 caps should be a bit bigger than mine. I have tiny little elect can caps... 47uF 16V
everything seems to be ok with voltages..
5.13
12.34
2.74 when its supposed to be 3.2
23.25 when it should be 22.4 at Q4
my resistance on my drive motor is off quite a bit...
36.5 ohms when it should be 11 ohms
177 ohms where it should be 186 ohms.
and I don't have an o-scope so I can only watch it fail in earnest.
any help on those caps would be great!