Is my CW-80 transformer something that is easily repaired by user?

The official response from Lionel and many form members would be to send it to the puppy farm. I however am into tinkering with and fixing (or attempting to fix) things. I had 2 CW-80s do the same thing to me. I opened them up using a triangle shaped bit and found that the fuse inside had blown. I replaced that with a circuit breaker and closed the thing back up. That worked for the 2 of mine that had gone "bad".

Edit:

I didn't answer your question. I would have to so no, that is not something I would consider easily fixed by most end users.

Common problem with that xformer.  Guess Lionel designed it that way to make them hard to change the fuse.  Anyway remove the 4 screws that have security heads the best way you can (drill and/or grind flat) and replace the 8 amp fuse.  Replace the screws with regular head screws.

I know it's not the same but my CW-30 had a short in it.  Every time I tried to run a train, the green light would blink and train would not move. Somewhere on this forum, there was another post about replacing the fuse.  I bought the special triangle head screwdrivers necessary to open it up.  ($12.00) Guess what?  No fuse.  At least nothing that looked like a fuse to me.  Just a circuit board and the rheostat for the speed control lever.  I should have listened to my local train dealer (Drauds Derailment in Lebanon, Pa. Highly recommended if you're in the area!) who told me they were not repairable and to throw it out.  I could have saved the $12.00 and the time I wasted trying to find the fuse.

This Hobby is a fascinating hobby as it involves so many facets.  I am a curious individual and as much I would crack it open (If it breaks, so what, you were about to toss it anyway).  You never know what little bit of knowledge you may acquire to help the next individual with this same exact question.