Diode question

[jkokura]

What would it take to allow power to hit ground through a Diode? I had a diode in backwards in a Tonepad Ross Comp, and when I discovered it I turned it around, however, now I have power problems - my ground is connected to my power. D1 on tonepad's layout can be seen here: http://www.tonepad.com/getFile.asp?id=9

Would having that diode in backwards fry it? When I turned it around I assumed it would still be good, but do I need to replace it?

Also, would having it backwards damage any other parts around it?

Jacob

[anchovie]

now I have power problems - my ground is connected to my power.

Is there an actual problem with the effect or do you just not like the way it looks on the schematic? D1 is a polarity protection diode - ground is ground so as shown on the schematic nothing is going to come from ground (diode anode) to your power rail (diode cathode). However, if you hooked up the power supply with reversed polarity then all the power goes straight through the diode to ground and the rest of the circuit isn't touched. So in your case, having the diode in backwards originally would have caused the same behaviour so the rest of the circuit wouldn't have had a source voltage applied and should be fine.

[JKowalski]

Yes it is probably fried because it tried to conduct pretty much as much current as it possibly could.

[jkokura]

Sorry, no, the effect isn't working because Power is going to ground. It isn't functioning, and this is the conclusion I've come to - either the diode is fried, or it's fried something else nearby. Thanks for the help, I'm going to see if putting a new diode in, orientated correctly of course, helps.

Jacob

[Hupla]

Sorry, no, the effect isn't working because Power is going to ground. It isn't functioning, and this is the conclusion I've come to - either the diode is fried, or it's fried something else nearby. Thanks for the help, I'm going to see if putting a new diode in, orientated correctly of course, helps.

Jacob

Just take the diode out and see if it works. It should still work without it.

[jkokura]

I replaced it and it fixed the problem.

While taking the original diode out, it broke in half. I'm fairly certain that was the problem.

Jacob

[JKowalski]

it broke in half.

Wow, that must have really killed it. What was your power supply rating in current and what was the diode?

[jkokura]

1N914 took 9.5v backwards. It could have broken inside, and then the process of turning around the backwards diode didn't help.