I have a Onkyo TX-8211. It's become unresponsive to both the factory remote and a universal remote that was programmed to control it. I popped it open to inspect the receiver module. I couldn't see any markings on it (without removing it from the pcb, anyway). I measured
5V on the supply line. On the output line I could see a digital signal that was about 120mV peak-to-peak when I sent an IR signal from one of the remotes.
Anyone know if this is typical of the output? Should the signal be larger? If the module needs to be replaced, how would I identify a replacement?
Since it is generating a signal I'm wondering if some other part has failed. There's an electrolytic cap wired to it, which I'm eying suspiciously.