|
Tested tube voltages for the 8BQ11 and 8BU11:
8BQ11: Pin 2 reads around 180V, as does pin 3. These should both read around 200V, so perhaps this tube is weak? I'm surprised I'm getting no color, though, these don't seem low enough to totally kill my color.
8BU11: Pin 9 reads around 130V. Pin 10 reads around 230V and pin 3 reads around 220V. Again, these seem in line with what should be expected voltage wise.
I'm going to confirm that I have around 170V on pins 2, 5 and 10 of the 6AC10. Those appear to be the final point of contact for the red, green and blue color signals before they hit the CRT. It could be that something has shorted in that tube and killed my color signals. If that's not the case, I'll check R84 and R85 to confirm they haven't shorted and then start working backwards from the 6AC10 to find where my signal is dying.
__________________
To keep your tubes running smoothly, make sure to dust underneath the glass as well.
|