Phil,
Yes, failing the smoke test is never a good thing, unfortunately. I think the fuse was a 3/4 amp but can't recall for sure.
There must be a short on one of the boards. At this point things seem a bit dismal. There is a small diode near the fuse, that sometimes blows and is a sort of a safety net. but if it blows, there is an interruption in the current, not a short to ground
At this point the best you can hope for is to ask a local ham radio club if there is someone who has some experience with troubleshooting radios and other gear who might open things up, and examine the boards to see if there are signs (subtle or obvious) of some failed part.
Failing that, and if you want to keep this station working, I would suggest you make a request for anyone with a working display (there are more of them than there are complete stations, since the sensors frequently are abandonded in place if someone moves, dies or otherwise leaves the world of observing weather.
The problem is knowing which of the three kinds of a display box you had, and that can't be determined reliably without the box powering up.
If it gets to that point, and you can take a picture of the wind speed and direction sensor, it is almost certain which kind you have.
Does your station do more than just temperature, humidity, rain and wind? Is there a lighting sensor? Is there a solar readout? Those are about the only two options that were out there that anyone got.
Once again, a picture of the back of your station is helpful.
Finally, if you throw in the towel and determine that the station is unfixable, and that you cannot find a replacement console, since Texas Wx is out of business, there are a few people who'd love to have the outdoor sensors. They are nearly impossible to find, and would be very well worth the effort to others keeping their stations going to get the humidity and temp 'pagoda' and also the (usually harder to get down) wind direction and speed sensor. I encourage you to keep this in mind and if you finally just say chuck it, please let us know so someone could offer to buy them from you in an attempt to keep an old station somewhere else running, as these are great devices and a very visible display. Yes, it is that important, so please let the group know.
Dale