First attempt a building a tube amp, and I require assistance.
First attempt at firing up my Zkit#1 and I am blowing fuses. Fast blow, time released, and slow blow 2, 3 and 5 amp. I get a 1 second buzz on the power transformer, then pop.
I have the board wired up and tubes in. I am building on wood and attempting to follow all of the directions to the "T". The chassis ground solder point is connected directly to the ground on the iec socket. Black primary leads connected directly to iec socket. I tried three different types with switches, fuses and just a straight socket. The ground of the RCA connection are connected to the shield (see photo).
I am looking for suggestions to diagnose the problem.
The soldering looks acceptable. Capacitors and diodes are in the correct orientations. I have been checking the ground continuity and it appears to be ok. I have attached photos for reference. I have connected the 6 jumpers. I used a 18 awg solid conductor that is rated for 150 V, low energy circuit (what I had on hand). The speaker connections are bolted directing onto the board.
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