You don't seem to have attached the circuit diagram for your device.
Have you checked that the opamps are working? This is best done by substitution.
Do you have test gear such as an oscilloscope available?
Electronics Assistant includes all these calculators and more in a stand-alone Windows application. Preferred resistor & capacitor values can be calculated for E6 to E192 series, and calculation results can be printed or saved.
Not sure where to start? Take a look at our beginners guide to getting started in the world of electronics.
Includes guides on tools, soldering, choosing & constructing a kit, troubleshooting and more.