Ampeg B2R

[MarkusBass]

Generally relays are drawn in the relaxed position.

Thanks, I didn't know that. But this leads to a confusing situation with amp schematics; you have voltages specified for amp in ON state, but the relay is in OFF state. So the amp output (as it is in case of Ampeg B2R) is not connected to the output jack as it would be with correctly working amp. Also if you imagine that the relay turns on some circuit - connects it to some voltage, part of the schematic would reflect amp in the ON state, while the other part would reflect the amp in the OFF state. I assume that only the relay is drawn in relaxed state but still for me this is slightly confusing - I thought that this is a mistake on the schematic. Thanks for correcting me.

Mark

[Enzo]

Well, one could make the case that the instant the amp is turned on, all those voltages would develop, but the relay is timed and won;t click in until a tiny moment later. But then we get into overthinking it. We can't really publish schematics for each condition the amp can take.

Switches are drawn in the "normal" condition. A toggle switch has two positions, which one is which is rather arbitrary. But one end will be called normally closed and the other normally open. Activate the switch and those conditions reverse, but the one end is still "normally" closed. SO unless otherwise noted, we draw switches in that normal state. Relays are just switches with a remote actuator. The concept of normally closed refers to the switch itself, ignoring that most of the time the switch might not be set that way. or in this case, the relay.

[frankencat]

Sorry to necro-post but I am working on a B2R with the same issue. Can I just bypass the relay to see if the output is good?
Thanks -Frank

[frankencat]

So I jumped the relay and I get sound so I assume the relay is kaput. Anyone know the specs so I can get a replacement?
Thanks -Frank

[DrGonz78]

Just off hand it might help if you post a clear close up picture of the part in question. I am sure at that point there will be a sure answer to your question.

[The Dude]

Before you shoot the relay, is there voltage across the relay coil? Is it being "told" to switch?