Page 55 voltage check wrong need help again.

[Kurthaudio]

Ok I get OL resistance from 4 to the now open pads. OL on all of them individually. 

 

[Paul Birkeland]

Now do the same test on the loose ends of the wires that are no longer soldered in.

 

[Kurthaudio]

393 red to 4
393 blk to 4

396 red to 4
396 blk to 4

 

[Paul Birkeland]

Could you post a picture of the bottom of the filament supply PC board?

 

[Kurthaudio]

Yup.

 

[Kurthaudio]

If I switch the 6.5vac coming off the transformer to the filament board the problem will follow. However I get 6.5vac on both sets with nothing connected????????

 

[Kurthaudio]

Problem solved. I have a AnTek AS-05T240 transformer laying around from another build. I removed the PT-9 6.5vac secondary’s and plugged in the AnTek………BINGO!!!!! Everything checks out now. Something is wrong with the low voltage windings of my PT-9 transformer………...

 

[Paul Birkeland]

Can you completely remove the filament PC board and show us what the wiring looks like on the transformer?

 

[Kurthaudio]

Sorry I already removed the PT-9 and installed the AnTek and am listening to it right now.

I really like what I’m hearing! I have a little his/hum in between songs. Can’t tell if it’s tube rush or ground hum. Right now I don’t care this thing sounds beautiful!