I did all the test as I went, but now I've found myself in a place where even the beginning tests don't validate. Not sure exactly what happened.
F1 is *HOT*
9V on the 9VDC side, and 1.34V on the other.
IC3 pulls .96V, 0V, 0V
Pictures: https://picturelife.com/fsargent/album/SFCt5aQrcRE1PVq
Ice Clock 5V is 1V - help?
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_bill
- Posts: 88136
- Joined: Sat Feb 07, 2009 10:11 am
Re: Ice Clock 5V is 1V - help?
What was the last step you completed before discovering the problem?
- fsargent
- Posts: 3
- Joined: Thu Mar 12, 2015 7:26 pm
Re: Ice Clock 5V is 1V - help?
Soldering on the microcontroller and header for the tube.
- adafruit_support_bill
- Posts: 88136
- Joined: Sat Feb 07, 2009 10:11 am
Re: Ice Clock 5V is 1V - help?
By microcontroller, do you mean the Atmega chip, or the square VFD controller chip?Soldering on the microcontroller and header for the tube.
In either case, some close-up photos of the soldering in that region would be helpful.
- phild13
- Posts: 247
- Joined: Mon Sep 10, 2012 1:05 pm
Re: Ice Clock 5V is 1V - help?
It is kinda hard to see in the photos but I think I see that your Q2 FET is installed backwards. The two pins on Q2 that are shorted together should face to the right towards C6/D3. I would verify the installation of Q2 and if it is backwards, turn it around, it should be Ok.
- fsargent
- Posts: 3
- Joined: Thu Mar 12, 2015 7:26 pm
Re: Ice Clock 5V is 1V - help?
Phil! thank you so much! That was exactly the problem. I didn't realize that there was a orientation to this chip. Re reading the steps I see how I made the mistake.
THANK YOU! What was junk is now gold. You rock.
THANK YOU! What was junk is now gold. You rock.
- phild13
- Posts: 247
- Joined: Mon Sep 10, 2012 1:05 pm
Re: Ice Clock 5V is 1V - help?
Your welcome!
Please be positive and constructive with your questions and comments.