I am working on the speedball circuitboards, and was testing the LEDs to make sure I didn't fry them when i was soldering them on. I was using the connectivity setting on my multimeter; for the small circuitboard, i found the bottom two LEDs lit up fine but the top two displayed around a 1000K resistance and didn't light up. Taking them out from the circuitboard I tested them again and they lit up fine. The same occurs on the large circuitboard with the topmost LED. Is there something in the circuit that stops them from lighting up?
EDIT: hooked everything up to crack and all the LEDs are functioning perfectly. Still curious about what stops the LEDs lighting up; still trying to understand circuit theory so any explanation is greatly appreciated!
Have another question after voltage check; all voltage readings are great EXCEPT for OA on the large circuit board, which is a little above the 10% threshold at 115V DC. I'm not hearing an imbalance but my voltages measure a little higher on the right channel for both circuit boards (for comparison, OB on large circuit board is 105V). All other values are well within threshold. Is the 115V reading of a concern? If it matters, I have a GEC 6AS7G (used about one hundred hours in another amp) and a Gold lion ECC82 (arrived a few days ago, about 50 hours on it) plugged in right now. My initial AC is coming out at 248V from the wall.
