Crack LED issue

barnstead

New member
First time builder here. I'm having issues with the LED on A3 which is failing to light up. The other LED does light and the voltages (below) appear to be correct. Any guidance would be much apreciated.

1. 75
2. 174.8
3. 0
4. 174.8
5. 58.7

6. 0
7. 103
8. 0
9. 93.7
10. 0
 
@Drew1d here's a picture of the 12AU7 socket.

@Paul No, I did buy the speedball but haven't touched it yet. It's just a standard Crack.
 

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Here it is, and one of the full amp.
 

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On the power transformer, remove the wires from terminals 7 and 9 and leave them poking up straight in the air then recheck the resistance between A3 and terminal 3.
 
The most likely culprit here is that some debris has gotten into your socket and created a short between pins 3 and 4.  You may just want to e-mail replacementparts(at)bottlehead(dot)com to ask about getting a new 9 pin socket and some fresh LEDs.
 
Thanks Drew, I missed your video earlier, but unfortunately no diode setting on my multimeter.

I did get the new socket in and installed it. But now the A8 LED won't light. Voltage measurements still look good.
 
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