NB: All i.c's should be mounted using IC Sockets.

Remove all i.c's from their sockets.

Connect the BLACK (COMMON) probe to a suitable 0V point.

Touch the RED (SIGNAL) probe to the indicated points on the i.c. socket and confirm the reading which should be less than +/-0.01V from the actual rail reading.

CA3080

CA3130

CA3140 (may have 0V at pin 4)

LF411

NE5534

OPA277

TL071

TL081

UA741

LF353

LF356

LF412

LM358

LT1013

MC1458

NE5532

OPA134

OPA2134

OPA2277

RC4558

TL072

TL082

LF347

LF444

LM324

TL074

TL084

CD4001

CD4007

CD4011

CD4017

CD4024

CD4066

CD4071

CD4081

LM3900

CD4017

CD4049

CD4050

CD4060

CD40106

CD4049

CD4050

LM13700