[First time posting here so forgive me if this is not in the right place]
After a recent deep clean, my IBTS started giving wildly inaccurate readings. After the deep clean, the IBTS reading seemed to be reading quite low as the roast progressed. I reached first crack at around 360 degrees F, which I knew couldn’t be right. So I removed the faceplate and cleaned the IBTS sensor with rubbing alcohol and a cotton swab as recommended. After that, the IBTS started reading far too high to be accurate. I didn’t reach first crack on the same bean until 410 degrees F this time. Again, I knew this couldn’t be right.
I’m afraid I’ve somehow damaged the IBTS or some other component unknowingly. The only possibility for this that I can think of is that I used a flathead screwdriver to scrape gunk off the inside of the faceplate while cleaning and that is somehow affecting the IBTS, although I know I didn’t hit the sensor with the screwdriver.
Does anyone there have an idea of what could be going wrong?