Hello and Merry Christmas to everyone.
To cut to the chase, the entire row across the top of the display does not work (see attached pictures). I spent hours trying to debug/diagnose/check/redo solders, with no luck.
I have the 19 pin tube. One of the first things i noticed when I opened the kit was the tube had a burn mark on the glass and a section of it was covered in white on the back (see attached picture). I know that Adafruit tests the tubes before they were sent out, so I wasn't too concerned that the tube might not work (it just wouldn't look as pretty, unfortunately).
The two tube pins at the 'bottom' of the header are as far back as I can trace a problem. While all the other pins have several volts going thru them, these two only have about 3 and 5 millivolts, respectively. i've attached a picture, pointing them out. I know the solder job looks like a mess now, because i've gone back a few times resoldering, trying to fix it, but I don't think it's a solder issue.
Thanks for the help in advance.
- Tube, fresh out of the box.
- 2010-12-24 11.25.49-1.jpg (841.58 KiB) Viewed 2386 times
- Top row not working
- full IMG_1778.jpg (775.71 KiB) Viewed 2393 times
- Bottom two tube pins with low volt
- IMG_1797.jpg (652.15 KiB) Viewed 2393 times