In the process of trading in my 250 for a pair of 300s, so I switched out the Tungsram 7DJ8s that we’re currently installed back to the factory gold lions.
After the switch:
— the BHK now powers on, then emits a loud pop from the left speaker and then immediately goes into fault mode.
— if I then take the BHK back into then out of standby, no fault mode, but I still get the loud pop from the left speaker when I switch sources on my BHK pre (The Pre has the same Tungsrams as well)
— switched the gold lion out for two other gold lions, with the same result.
—switched back to the Tungsram and everything works perfectly— no fault mode at startup and no popping when switching sources on the Pre.
I would have just guessed it was a bad tube, but for the fact that the issue remain with each other gold lion I tried.
Any thoughts here on what could be the issue? Obviously I could just leave the Tungsrams in for the trade, but would like to figure out the cause, not only for my edification, but also to alert my dealer prior to the trade in if i am not able to troubleshoot.
Thanks in advance,