This is not directed at any individual poster, but to those the feel that everything should be at near freebie pricing.
Electronic service work labor is from about $50. on the low side to $100. on the high side for a hour of labor. This does not take into account the cost of parts or shipping. Let's take $50. as a figure. Labor on most detectors run about 2 hours, = $100. right off the bat. The CZ-20 is most likely going to be about 4 hours to do including re-alignment, and re-sealing. Thats good for a $200. labor bill.
In service departments like Fisher has, it's far better for them, faster, and the repair is more reliable, to replace the the complete component board, or in the case of Tim's, the face plate assembly. By the sounds of it, Elgin Tim's unit was not under the lifetime warranty. We can also compound the problem with the fact there are no CZ-20 parts left. Having no parts for the CZ-20, ( it was discontinued long before First Texas purchased Fisher ), left them no choice but to repair it by replacing it with current CZ-21 parts. In order to do what was needed it was also necessary to change the case out also.This being 2008, I can understand the high dollar amount. Actually the price quoted isn't too bad considering all. All should be aware that sending your detector into any company for non-warranty repairs, is going to be expensive. The days of the $50. repair bill went out with the .50 cent loaf of bread.
Speaking about warranty's, had the lifetime warranty been in affect on this unit, Fisher would have done the work at no cost to Tim. This is something one needs to think about when purchasing a used detector, and certainly a water detector. I'm sorry I just don't see why Fisher should be giving this repair at no cost. It certainly wasn't the new Fishers fault. First Texas did not have to continue any warranty issues that was setup by the older Fisher company. They did decide to continue it, thank you First Texas.
I can't speak for anyone at Fisher that may have not been polite to Tim on his unit, but reading his follow up post on this matter he explained it.