HP 97S I/O transistors replacement

[Dave Frederickson]

From the second pic, the "M152" part is marked 4-713 which is an 1854-0713 (HP shorthand). This would be Q4 on the Logic PCA in the 97 Service Manual.

Perhaps with the service manual you can correctly identify the other parts. It looks like they could be Q1 and Q3 on a standard 97 Logic PCA.

Also, I agree with the others, it's probably fried.