Asked — Edited
Resolved Resolved by DJ Sures!

Help On Recovering From A Stupid Moment On The Ezb

I got my head all back together and the neck, etc. I have a battery going through a 640 ohm resistor to a female extention plug. I plug this in to test the LEDs. Each one worked very good but one did not. I checked reverse polarity on the circuit and the LED worked. I did not want to take the head all apart again (hassel). So , I simply turned the plug around not realizing if i were hurting something or not. But, it did not seem that it would damage the EZB because I was simply swapping ground and signal. I can't see very well, I may have plugged a plug in shifting one pin over. that would connect ground to hot or signal to hot.

Anyway, boiling it down, All of my digital pins do not work anymore.

Any ideas? I am thinking voltage regulator blown, I hope it is not the cpu. I am going to run the test that D.J. has and try to figure it out. The lights blink red and blue and it connects up. So , the bluetooth is working.

Wish me luck.


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#49  

OK, I ordered the Lm1084 IT 5.0/NoPB.

When I do a search for the %A LDO POS REG, it puls up the LM1084. Am I missing something? or are they the same chip. It seems like they have a different pinout. I need the part # to the VR2.

Thanks,

Mel

#50  

Nevermind. i got the numbers mixed up. I do that a lot now.

#51  

OK, we can close this thread because EVERY Port is working now. As it turns out, after replacing the two rectifiers and the diode that all I needed was to take the cpu out and put it back. I am SO Happy. I was getting EZB withdrawals.:D

#52  

Yeah, but did you not do that once already and it only worked briefly?

#53  

Yes, that is true. But I did not completely remove the cpu. When I did, I felt something like metal fall out of the socket area and fall to the floor. But, I couldn't find it. You have a good memory. Better than mine.:D

#54  

Well, cross your fingers and lets hope it works permanently for you this time...;)