Hi,
I swapped out my Jantzen Audio Z-Cap (800vdc, 15uf) with Mundorf MCap Supreme Evo Silver Gold Oil (800vdc, 10uf).
As the wire does not align correctly, i had to bridge the connection with a Separate Wire.
After power on, all 3 Tube lights up but no sound from the headphone. I think i waited around 30 seconds and turn off.
I attached a picture of my bridge connection - which i think is likely the issue.