Noisy Cricket Mark II drains battery when off...

[momo]

I searched here and could not find a fix,
I remember reading about this that Beavisaudio circuit drains the battery even when switched off.
Has any fix been found for this?
thanks

[knutolai]

If the battery is draining when the module is not in use that means that both battery terminals are connected to the circuit. A simple fix would be to add a switch for the positive terminal so that you can disconnect the battery without removing it from the enclosure.
Like sw1 in the linked schematic
http://www.beavisaudio.com/projects/NoisyCricket/Noisy_Cricket_Schematic.gif

[momo]

Hi, thank, but guess what?.
Its not a noisy cricket, its a Little Rebel....
Here I am looking for something stronger than rubys and little gems and I have a little rebel, 2W..
so thats great and I can run it on 12v, but now I need to figure out why its draining the battery, must be a default on off switch..

[Mark Hammer]

Battery-drain-even-while-asleep is a problem that comes up regularly enough here.  The most common cause is that the builder connected the battery leads to the wrong lugs on the input jack, and it actually does not disable the battery when they unplug.

[momo]

Actually for this build, on th pc board there is a provision for a switch, I wired it as it said, so its a design flaw on there. I will just rewire the ground from the battery to the switch instead...

[knutolai]

Even better would be to just stop using batteries altogether:
http://www.beavisaudio.com/Projects/badBattery.htm

[pappasmurfsharem]

Actually for this build, on th pc board there is a provision for a switch, I wired it as it said, so its a design flaw on there. I will just rewire the ground from the battery to the switch instead...

Pic of the PCB?

[momo]

Here is what I took to etch a board

http://www.instructables.com/files/orig/FGA/9L5J/GEVZMERR/FGA9L5JGEVZMERR.pdf

[pappasmurfsharem]

Here is what I took to etch a board

http://www.instructables.com/files/orig/FGA/9L5J/GEVZMERR/FGA9L5JGEVZMERR.pdf

The only "provision" I see for a switch is the "fuse" pads

Is that where you placed it?

Edit.
Ahh I see it now.

Well either way I don't see why you can place the lugs of a spst on the fuse pads without the jumper

[slacker]

The "mains switch" isn't an on/off switch, it only disconnects power to the 386s the rest of the circuit is still powered, so will drain a battery. Can't see what the point of it is to be honest.

[Jdansti]

One option:

[momo]

Yes thanks everyone, thats what I had figured to do. Its a bummer though, as you see everything is a tight fit in there and now I need to break it open to do the job..

Oh and if its not too much to ask or if anyone had the time for that, can anyone see if the tone section can be improved?
I have no idea how to make the changes, but as it is the mid and low section have a very subtle effect..