At least that's what it appears...
In the old days these timers had a relay, but I know the new ones
have no mechanical moving parts.
The amp in question is "smart." When it receives an audio signal
the LED on the on/off button changes from green to red.
The amp is supposed to have power to it only for certain hours each
day, controlled by this timer. But during the off cycle, the LED still
glows red! I would expect it to be totally off when the timer so
The bottom line is that I don't know if the amp is actually off. I
seem to remember that one side of a connection is all some LED
circuits need to operate, but don't know if this applies in this case.
I'd appreciate your thoughts. Thanks.
Put a Killawatt meter or VOM and see how much power it
uses when ON versus when it's supposed to be off. It's
possible it does power down, but the red LED still indicates
it has not been manually shut off.
Solid-state relays pass a little current when off. I encountered this
problem when using them to control my holiday lights. LEDs will light
with such small currents. I got around that problem by having at least
one non-LED item (like incandescent or motor) on each circuit. Maybe
that would work for you too (put a small light on the timer with the
amp). You could try to see if the amp works when it's supposed to be off
(try it twice in case your timer has the annoying "local on" feature
15 days until The winter celebration (Sunday December 25 2011 12:00 AM).
I'm guessing the current it's passing lights the LED. Thanks for all
your ideas. Will check with meter, also try the bulb idea.
Is it still possible to buy an electronic timer with the old-style
Thank you all!
If the purpose is to save electricity, then that leakage will just go
to the filament. I'd suggest buying a mechanical timer. I'm sure they
are still made, or one can be gotten on ebay or at a second hand store
or garage sale. Apparently the OP has a triac or SCR controlled
switch, there must be some voltage still going thru this triac or SCR.
Another option would be to feed the output of this timer into a relay,
but for the cost and trouble, I'd just get a mechanical timer.
Is that a tube amp? leakage if present the current flow is negligible.
Minimum load is required to make the SS timer work properly. I think
something like 10W or so. Motion sensor in my back yard needs minimum
10W bulb to work properly. Another lamp fixture on light sensor works OK
with 7W LED lamp. LCD TV, SS Amp, printer, etc. on stand-by takes about
Some of those electronic timers are never really all the way off. They
require a path through whatever you are switching to make the
electronics inside of them function.. Also if they see a reactive load
some of them may not turn off at all, at timer that works fine with
incandescent light for a load may not work using flourescent lamps.
The solution to this is to either use a different timer or to isolate
the timer from the load with a relay.
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