sundance-communications.com/forum Forums TDM Business Telephone Systems Nortel Telephones & Systems Reset E-RAD Password

Please Can You Help
We Have An E-RAD Unit Fitted To A System
We Need To Default The Password

I Have Tried The Fast/RAD De-faulting
Did Not Work

Hope You Can Help

Chris

I've never seen and e-rad but it is probably like everything else they build and it has a super-capacitor in it.

If you open the unit and see a round device about the diameter of a silver dollar with just two leads on the other side then that is your back up, a capacitor not a real battery as we know ni-cd or ni-mh or li-on.

They are 5 to 6 volts. If you take 6 volt flashlite bulb and connect an alligator clip lead to each side of the the capacitor and to the center and ground of the light bulb it will glow until the the charge is drained out of the super-cap.

You could just short it, but people have posted that you should not do a direct short. I have but this lightbulb trick is certainly safer for the super-cap.

Good luck and look for a 6 bolt bulb not a 3 volt bulb that will glow like a flashbulb for a second and not achieve your purpose.

Discharged Capacitor As Per
Password Not Removed

Remove Capacitor From PCB
Password Not Removed

Thanks For The Help

This May Have To Go In The Bin
Chris

Hey The Bunnie,
Love the flashlight bulb idea. I usually use a big old resistor (600 ohms) but hey, whatever works.

One more trick since you have removed the Super-Cap., try leaving a shorting wire, making a good connection somehow, where the two leads were at. I would think that what you did would be good enough but at this point, one bare wire and some time might work.

I assume this is a small unit and could not have a second Super-Cap.

Since there is nothing to lose, you could pop the SC back in and see if powering it up again works.

Myself, I would leave it shorted overnight and see if I could go into programming with no super-cap.

If not, solder the super-cap back in and try to program. Nothing to lose at this point.

Wish you well, thanks, Bunnie

The flashlight bulb just gives you an indicator while you are on site if time is short. The filament in the bulb is a resistor in the same manner as the 600 ohm resistor you have Tronic1.

Thanks, Bunnie

I have tried the reset procedure several times, but without success.

After pressing the digit 2, the display shows NVRAM Default.
After pressing digit 1, the display shows FastRAD Reset.

But when I key in F9** the display again shows "Enter password" (which of course I don't know).

I have also removed the 1.0F capacitor for several hours but that didn't reset it either.

I would be very grateful if anyone can help me any further with regards to resetting the E-RAD password.

The system is an MICS with Rel4.0 software.
The E-RAD2 is Rel02.

Best Regards,
Graham :-)

Set the system date and time back to prior to install. This should default the password.