what to do, what to do?

It's a sad day when one of your detectors dies but I think it is the end of the line for my beloved CZ6a.  It no longer works and am not sure if the problem is in the housing (most likely) or in  the coil.  do not have an extra coil to try switching coils.  It was repaired once by my hunting partner but he no longer is in a position to repair it due to having taken another job.  Have had it since about 1995 and is the only detector I am ahead of the game as far as paying for itself (only counting clad count and not bling).  When you have a stable of detectors and don't get out all that much your yearly $ total is split up by the number of detectors you use that yr.  Takes awhile to pay off any of your detectors.The CZ6a really is a brick on a stick and at first did not like it cause it lumps quarters and dimes together but have grown to like it.  Has been my nasty element machine but now have an AT Pro.  Back to what to do.  I thought about doing the ebay thing and selling it as is for parts.  Maybe saw something clever like Guaranteed not to work, if it works return it and I will refund your money. ha ha    Don't think I want it repaired by someone else other than my hunting partner cause I don't want to spend to much, it's not like I don't have other detectors on hand.  Most likely will hang on to it till my partner can look at it, could be something as simple as a broken wire.