No output from new amp build

[Bootsman]

[Bootsman]

Is anything in the layout not right?

[Stevem]

Across pins 9 to 4 or 5 on any preamp tube you should have at least 6.3 volts.
Pins 4 and 5 should jumped together!

[Bootsman]

I have 4&5 together and on pins 4&5 I have3.1v and pin9 I have 3.15v

[Bootsman]

I was told which pt to purchase and it’s the wrong one for this amp

[Bootsman]

And that’s why the heater voltages are 3.10v

[sluckey]

I have 4&5 together and on pins 4&5 I have3.1v and pin9 I have 3.15v

I was told which pt to purchase and it’s the wrong one for this amp

And that’s why the heater voltages are 3.10v

Nothing wrong here. If you measure the heater voltage as Stevem stated you would have twice that voltage.

[Bootsman]

My heater voltages for each heater wire has 3.15v. Coming out of the pt

[sluckey]

My heater voltages for each heater wire has 3.15v. Coming out of the pt

Nothing wrong here. If you measure the heater voltage as Stevem stated you would have twice that voltage.

[Bootsman]

I’m just trying to understand how he wants me to test heater voltages

[Phil_S]

I’m just trying to understand how he wants me to test heater voltages

One probe on 4&5. The other probe on 9. You'll see 6.3 or something close enough.

[drew]

I’m just trying to understand how he wants me to test heater voltages

One meter lead connected to Pins 4-5, the other to Pin 9. But there is no need to try this now since the measurements you’ve already taken tell us that the heaters are wired and working correctly.

[pompeiisneaks]

also pins 6/7/8 all being 108 volts seems really odd... Without a schematic, though I'm just guessing, but they should be similar to V1.

~Phil

Cathode follower

So a cathode follower has the anode and cathode voltages identical? that definitely seems odd to me... there's zero voltage drop across the entire triode?

I know that the cathode voltages on one half of the cathode follower can be higher, but I didn't think the anode and cathode were at the same potential? And the grid of the same triode?

~Phil

[Bootsman]

I think I found my problem where does the common for my bias go too?

[Stevem]

The joined positive end of the two bias filters goes to ground.

What do you have for a negative voltage on pin 5 of the output tubes?