When i turn on my JBL GTO1004 i get 1 second of sound through my speakers then i get nothing but a cyclic regular pop every 2-3 seconds but no sound until i power it down and do again.

Try doing default factory settings.
Step 1. Press the "Power" button located on the top center part of your JBL Charge 4 Bluetooth speaker. The speaker will be powered on when the LED backlight under the Power button is lit.
Step 2. Hold down the "Bluetooth" and "Volume Up" buttons at the same time for roughly three seconds. The Volume Up button looks like a plus sign. Additionally, it's important to hold down the "Bluetooth" button in the center of the device next to the Power button, as it's easier to hold down. After three seconds, the LED ring around the Power and Bluetooth buttons will briefly light up before the JBL Charge 4 powers down.
Step 3. Press the "Power" button again to turn the JBL Charge 4 Bluetooth speaker back on. The Charge 4 will instantly turn on in Discovery mode, with the Bluetooth LED blinking on and off, and the speaker making a pinging sound. This confirms that you've successfully reset your JBL Charge 4 to its default factory settings. You'll need to pair or re-pair any devices you want to play audio through the JBL Charge 4 speakers with the device.

Should be under warranty. Contact jbl for repair. Sounds like either the battery or charging circuit is bad

Press and hold the * button for 2 seconds which should turn off the flashing lights.

Yes, follow this sequence:
1. Turn the device on
2. Press the call (phone icon) and the volume up (+) button at the same time and keep them pressed. After a few seconds the speaker will shut down.
3. Release the buttons.
4. Turn the speaker back on. It will automatically enter into search mode... And there you are, memory wiped up.
Good luck.

Unfortunately, it sounds as though the wrong wires were touching when ot was popping. Then it probably got hot and melted the sub standard soldering jobs in these things. I had a Roker do the same thing, opened it up and fried, wires not insulated and against each other. Sorry poor quality, speaker even though expensive. Can you return it? Contact the company.

Sounds like the battery is dead. Have you contacted customer support at JBL?

Go to settings, General, blue tooth and remove any "other" previous paired BT devices & Turn off BT, then go to Sett. General, scroll down to reset and reset network settings, this will not delete anything. Power off BT speaker. after iPad re-boots turn on BT Speaker First, make sure BT is off on iPad as well as WIFI-wait like 10-15 seconds and then turn BT on in iPad it should see your speaker now and let you pair it up.

WE REPAIR THESE AMPS - EBAY - EDWARDS ELECTRONICS - :)

Probably a poor power connection either where the AC pack goes in to the wall (probably powerbar!) or where the plug from the power pack goes into the unit. Wiggle the various connectors to see which one solves the problem. As a last resort you may have a faulty power pack (try ask a dealer or friend to test your system on their power pack).

it died and the parts aren't available, same problem here, even took it to an authorized outlet, parts aren't available