|
No the battery is only for the resistance ranges. Check the tubes, if they are properly plugged in and light up. There is a power supply of course so maybe something has gone wrong there.
As for recapping, probably the only part would be the filter capacitor. Measure the B+ and see if it's around 150V.
The 12AU7 is the meter driver so it is okay. What are you using for a probe? The DC probe almost certainly would have a resistor inside; maybe yours is broken.
|