I wanted to reach out for help locating a data sheet on these two parts. The 8pin smt dip marked ACTH and AJRG. A google search turned up nothing.
I can tell you what they’re supposed to do. The ACTH is supposed to put out one volt on the second pin from top, given an input and probably a comparator. The AJRG is supposed to do exactly the same (same pinout) at 3.3 V. I know that I am not getting 1 V in that circuit.
But I need a data sheet to see if ACTH is broken or if the problem is further upstream (incorrect inputs).
The logic chip on this board is also running exceedingly hot. And instead of 1.0V I read 0.06v I think (but not 0V). The other portions of the chip test nominally so far. I do not have schematics. But I do have a working copy to compare.