fried LM324 quad op amp?

[allaccess]

Please ignore/delete this thread. Problem fixed. Sorry for the inconvenience.

Is it possible for an LM324 to be damaged in such a way as all 4 op-amps still amplify but such a basic circuit fails?

Hello, I am trying to use an LM324 quad op-amp to build a basic function generator but i suspect the chip may be damaged.
When i perform a simple can-it-amplify test, all four op-amps pass: I attach a crystal earpiece to the +input, and an 8ohm speaker and a green LED to the output, and simply tap on crystal earpiece, and i get an audible click from the speaker and a flash from the LED when I perform this test on all 4 op-amps.

However, i have tried multiple google-search function generator circuits and none of them work. I get no square wave, and no reading on my digital scope, including this circuit:

Is it possible for an LM324 to be damaged in such a way as all 4 op-amps still amplify but such a basic circuit fails? I have tried constructing just the 1st stage and still get no square wave or output of any kind on pin 1.
Thanks, allaccess

 

[alec_t]

The LM324 cannot drive an 8Ω speaker.
The first stage shown has a lot of positive feedback which will cause the output to latch at/near one of the supply rails until the input receives a very large signal (which a crystal earpiece is unlikely to provide).

 

[jjw]

Do you have a dual power supply, at least +5V, -5V ?

 

[schmitt trigger]

Glad that you were able to solve the problem.

It would still be nice to know how you solved the problem, such that other members can learn from your experience.