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Yes but the r value decreases with parallel resistors. Use your meter as recommended. You will be checking the volage any way right.:)
What layout has been followed? Perhaps an under the board jumperwire from the ltpi tail to the nfb injection point is missing? Can we see the PI...
Ohm grid to cathode on each triode of v3
Ohm grid to ground on each tr iOS ode of v3
Pics of presence pot wiring and v3 may help
Sweet! That badge is Ace!
No tubes(rectifier), no vdc at rect p8 is normal. 329vac+329vac=660vac:)
I think you are ready for the next step in your startup procedure.
You may want to read through the NFB mod again
From the link...
How dare you try and feed a hungry human in another country!
You're right. Disregard my previous post. o_O
+1 disconnecting NFB
a few good pictures may shed some light here.
Like a 1M volume pot:)
Doubble trippple check the connections to V1 p6,7,8...
I do not design circuits but this looks fishy to me.... There is not a limiting resistor in your bias circuit. No bueno.IMO...
Here's a good one... You know... Cause mine made the list!;)
Well.... Where else would we look;)
Looking at the drawing, this is essentially what is going on here. I would lose the heater ground at V1 and install an artificial center tap at...
That's not the rectifier tube in V4 is it?
So whats the issue? It looks like fairly new e caps. You may only need new set of power tubes. Yours appear to be a mixed set anyway. Just...
+1 with Dan on your cathode connection. Easiest way to confirm,IMO, is to disconnect the nfb tap from the circuit then measure v1p8 to ground....
All good possibilities mentioned. Here are most of them mentioned....+
compliments of robrob....
I agree with wally re:using an adjustable pot. I also have never wanted more grit from a 5f1 with a fully bypassed v1a cathode. Do you have a...
Thats a good reading. Yes amp off caps drained.
You can elevate the heater any w@y you want....
A pop on v1b p8 is as good as a pop on the grid of 6v6, this would indicate the signal path is good from that point onward through to the speaker....
You'll be 51 50 before you know it.
I would copy the original bias circuit