Hello All: I did search exhaustively for an answer before posting but have come up with nothing. I bought a used BJ with non working reverb. Tank had been replaced with a MOD tank. I tried a known good tank from another BJ first with no luck. Touching pin on the return RCA does not give any hum. I installed a socket for the IC and put in a new 4560 chip. Still no reverb. I tried the pin touch again and strangely it worked briefly then nothing. I haven’t been able to replicate that since. I’ve gone over the board for loose connections or cold joints but all looks well. Today I tested voltages in a few places and am getting strange results. With chip in socket I am getting +15V at both pin 1 and 8! With chip removed I get 0 at pin 1 and +15V at 8. Any ideas?