Crack Died On Me

[louh]

My unit had been working perfectly for about 5 months when it emitted a soft "pop" and died. Tubes still glow, resistance and voltages check out. Any thoughts on next steps? Thanks.

 

[Strikkflypilot]

Stock amp?
Tried with other headphones?
If voltages check out,LEDs and tubes light up on both sides it isn't dead.
Troubleshooting, IMHO, must start from headphones and backwards inYour case