Bad ICs?

[stitch-o]

Note: sometimes with ICs in sockets, just re-seating the op amps can clear some issues due to marginal socket connections.

JR

Tried that first thing before I even thought to post here.
A good troubleshooting tip for sure!

Cheers!

 

[thermionic]

Note: sometimes with ICs in sockets, just re-seating the op amps can clear some issues due to marginal socket connections.

JR

Indeed. Particularly with the type of socket shown here. I find the CNC-turned DIP sockets to be far more reliable. The type shown here loses tension over the years (heating up / cooling down, i.e. 'thermal cycling' will take the tension out of the springs). I've opened up older gear with these sockets and seen ICs literally fall straight out...