removing and cleaning the area helped quite a bit! it's not perfect so i think i have more cleaning to do.
Top-level
removing and cleaning the area helped quite a bit! it's not perfect so i think i have more cleaning to do. 4 comments
so what does the 74ls125 do in this circuit? it's just discharging the timing capacitors. the NE558 also does this, so the 74ls125 is connected in parallel. I guess it... helps? regardless i went and cleaned the board again more thoroughly, and it's working a lot better now. i'll replace the damaged 74ls125 later.
[DATA EXPUNGED]
|
i'm also thinking that the etched/oxidized solder joints in combination with the spilled electrolyte formed an electrolytic capacitor with about 45nF of capacitance. yeah that would do it.