I followed the PiFm instructions to broadcast a .wav file on 87.5 MHz. I connected my antenna to GPIO 4, but nothing happened. Then I unplugged & tried again, but got the same result. I think I may have touched more than one pin at once with the antenna at some point. I don't know when it stopped working, but when I tried to stop the broadcast found that ssh had stopped working.
I unplugged the pi (I know you should do poweroff but I couldn't), and plugged it back in. The ACT light does not light up but the power light stays on. I have changed the storage device, the power supply but nothing works. Did I fry my pi permanently? Is there anything I can do? Would a warranty cover this? I'm not sure where the Pi was purchased as it was a gift.
I think I may have touched mote than one pin at onceIf that's the case then it most likely wasn't pifm, but you that broke the Pi... And I hope using pifm is legal in your part of the world. BTW: did you try running a freshly downloaded Raspbian Stretch on a fresh SD card? – Dirk Feb 13 '19 at 19:17