Reliable repair work

[xJAyx]

I'm working on a fairly simple ignition style circuit which contains caps diodes, resistors, pots, a 555 timer and a darlington pair transistor.
Repairs are usually simple things like replacing burned out diodes or a burned off trace.
I have a test rig for the whole circuit which is basically a go/no go tester but can be used to run the board for an extended time. I am concerned about post repair field failures and I am wondering if there is some way to test the additional components for partial damage. Also looking for tips on testing the whole circuit for long term reliability.

Thanks in advance.

 

[cbarn24050]

Hi, run it at an elevated temperature say 70degC for 24hrs. This will accelerate component failure an weed out all the weak components.