It would only be either a sequencer or a contactor, not both. I can assist in seeing if parts are available for ordering and can give basic info such as already given.
That will help to lead/point to possible problem(s).
For further help in actually testing components, I charge a $20 troubleshooting fee for 1 hour of one on one emails.
If interested , go here :
Any other basic questions I can answer, will do what I can.
Some people are Humbly Grateful, while some are Grumbly Hateful.................... Which one are you ?