ATL Strat wrote:I noticed that the 470k resistors from power section grid resistors to ground were ommitted on Aaron's layout (they show up in the schematics). Can someone tell me what the purpose of these resistors is? Is it something unique to a Cathode Follower setup?
Thanks for pointing this out and I'm embarrassed that I missed this detail. Especially since I have put some thought into this section.
Originally, I used the 1.5K resistors which are on the schematic I didn't catch the 470Ks. Then, at the advise of a few, I switched the grid resistors to the more conventional 5.1K, but it always bothered me.
It's bothered me because either the tech who drew the schematic was either consistently dyslexic, substituting 1K5 for 5K1, four times on the schematic or I was missing something. So I think I'll try going back to the 1K5 and adding the 470K and see what happens........... mojo?
Just to check in on progress:
1. Kind of figured out how to use my oscilloscope and signal generator and I've traced the signal through the amp.
2. In the process, I found one eyelet which I didn't solder and two erroneous connections.
3. With those fixed I get signal through the amp but the signal is very weak, whisper level.
So I got signal but no power.
I'm thinking that the next step is to swap the 5K1 for the 1K5 and add the 470K to ground maybe that has to be for the cathode follower to work....... and I'm thinking that I should get my voltages in line with the data from the schematic.
Thanks for looking.
Eric