Stumped! Mojotone 18watt Tmb blowing fuses

[JMPGuitars]

Maybe, you could be right. Or it could be that the current draw is low enough to hide the problem. This is a very messy build from the photos. There are solder blobs in multiple spots. A LOT of issues with grounding. For example, the output is grounded to a tube socket mounting bolt. That's a double no-no. Speaker output should be grounded to the star ground, and mounting bolts shouldn't be used for grounding at all. All grounds should have dedicate mounting points that serve no other purpose.

I don't know if it's just camera angles, but there are also other points that look like they could be shorting, or arcing and causing a short. The resistor on the cap can isn't touching, but it's darn close. Same with this heater wire.

Screenshot 2023-07-24 144042.jpg

Why is it twisted like that? Is the connection good? Is it arcing, or causing some other fault? etc. etc.

[mac dillard]

Also, old builders saying "never trust a wire that makes it's connection under the board where you can't see it." Strange things happen in the dark, under the board is in the dark.