Lds 5811ww dishwasher e1. I have the e1 error and the local repairman can not repair it. They have

Question

I have the e1 error and the local repairman can not repair it. They have tried a new motherboard to no avail and have stated the problem is with the power getting to the unit. It is not 120 volt. They are wrong. I think I am on my own with this issue. Help.The dishwasher beeps and brings up a 1E message after only a minute from the starting of dishwasher, when turn off and on again the same process happens, it won't go past this stage on any cycle .