Yes it is possible that the 'remanufactured' module has failed again.

It is always better to actually repair the module rather than replace
it with a 'rebuilt' one.

If they did not replace the hv splitter, it may be bad now and also
would have taken out the same module. It is also possible coolant
leaked onto a board or a picture tube has failed.

It is a Zenith RPTV and they are not known for the best reliability
from the later part of the 90's, especially right before Zenith's
bankruptcy avoiding buyout by LG electronics (Goldstar) in 1997 or 98.