Allnic h-3000 power supply issue

What did your tube data research disclose on voltage and current? How old is the unit (thus, having recourse to the distributor)? I’ve rolled, among others, a metal base Mullard (really a Philips Miniwatt but a GZ 34, not a 32), a fat base 34 and with best success in my system, given its strengths and weaknesses, the GEC u52. (which I have owned as both a black base and a brown base, cupped bottom).

If you fried something and have no warranty, the repair should not be that difficult for someone competent. 

Frankly, I should have suggested you check the fuse.

As to power cords, try several and see what you like. There is something to be said for "same cable" throughout a system, though that means you could miss by a mile too. I found very little benefit to rolling the audio tubes and those on the main chassis-- I went with Dutch tubes as I recall when I recently retubed.

The rectifier is key to this thing, though. And you’ll hear different things from different people which means a number of variables: system voicing, where the system benefits from the particular tubes strengths and minuses--as well as shortcomings in other parts of the system. Mine currently gels but I think this is very system dependent, based on personal (and hopefully informed) preferences.

BTW, is the tube you are focused on-- apparently a GZ32 equivalent-- the correct tube for this power supply?