Gentlemen, I'm at the end of restoring a Pioneer SX-636. On the final test of all the functions i noticed that although I can pull FM stations in, they will not receive in stereo. (Same issue prior to the restore) I've done a cursory alignment of the RF and IF stages which were not far off at all however FM reception is challenging even with a basic cheapo balanced 300 ohm antenna connected. I've read all the posts I could find on similar issues and followed the advice. So here's the rub. Everything in the circuit is working as it should including all voltage measurements on the ICs and such. So i'm pretty sure it is a poor reception issue or the HA1156W itself as I can inject a 19kHz directly to pin 2 of the IC and the stereo indicator line on pin 6 will not go low. What I haven't seen is what the wave forms from the divider and VCO should look like so I'll post them for you all. Please let me know if i'm seeing what I should. Thanks in advance for your responses!