I had the same problem with mine, due to an oscillating driver ahead of the WIFI amp, I most likely blew the first stage. I ordered a replacement booster from the seller on Ali Express, and they kindly included a spare IC (YP2233W). IIRC it is a QFN package with an exposed ground pad, I have not yet had the courage to do the soldering (I expect it will need to be done on a hotplate).
In order to protect the new PA from excess input power, I use a Minicircuits limiter at the input:
In combination with a power detector + Arduino + bargraph that provides an indication of drive power visible from the outside of my QO-100 outdoor unit.
Wouter Jan PE4WJ