10 stages of different gains, output voltage is momentarily 1 volt

[Simmon]

10 stages of different gains, output voltage is momentarily 1 volt
The circuits I'm troubleshooting has a Momentarily output voltage at +1 volt on a good board

The problems with the bad boards is that the momentarily output voltage is not at 1 volt but .800 volts or .600 volts. some are 900 volts, etc.

The circuit has 10 stages of different gains of using LM741 op amps and different IC chips

Which IC chip is causing the momentary output voltage to not be at +1 volt?

What kind of troubleshooting can determine which IC is causing the problem?

I have been replace each IC chip one by one until i find the problem

How would you approach this type of problem?

 

[Simmon]

The input is a switch and the output voltage rises momentarily to +1 volt on a good board

The Bad boards, output voltage rises momentarily to .600 volts to .900 volts

 

[duke37]

If the output voltage is low, the first thing I would look at would be the power supply.
It is very stange that the output is in steps of a tenth of a volt to an accuracy of one part in a thousand.
Without a circuit diagram it is impossible to for me to give further advice.

 

[Simmon]

The voltage starts at the input of stage#1 at zero voltage and rises up to +1 volt on output stage#10 just momentarily it stays at +1 volt and then discharges back down to zero volts

The problem is which IC op amp or IC chip is causes the voltage not to rise up to +1 volt on the output stage#10

I have to replace the IC's one by one until i find which IC chip is causing the problem

How would you troubleshoot and approach this type of problem?

 

[KrisBlueNZ]

We need to see a schematic diagram.

Also please try to explain what the circuit is supposed to do.