On 3/20/24 22:19, Chan Gade via Jukebox-list wrote:
There is nothing special about it. Replace with two silicon diodes in series. If you measure them you'll see they equal two regular diodes in series (around 1200 ohms DC resistance).
According to the cross-reference that John Robertson posted earlier, it looks like a plain old silicon diode, not two in series.
Also, you can't really measure the DC resistance of a diode. Yes, it will show something on an ohmmeter when forward biased, but the reading is essentially meaningless. It will vary widely based on the design of the ohmmeter.
While at it, replace all the "stabistors" in the AGC circuit as well. They often fail resulting in unequal levels depending on the amount of gain reduction being used.
I'm not familiar with the SAMI, but there are indeed weird diodes in the AGC of other Seeburg amps that are equivalent to two silicon diodes in series.