2. amps-preamps
  3. 130714-1659

Help with a new Tube headphone amp blowing fuses

Received a new headphone amp this week to replace one from same manufacturer that is still serving me well but wanted to try a little more power, new amp 1.4 watts versus a .35 watt on the older one. Have about 25 hours on new amp and turned it on this morn loaded CD and after about a minute the music was replaced with an elevated fuzzy noise right before fuse blew, replaced fuse and it blew a second or two after turning unit on, saw nothing unusual going on with the tube glow, replaced New amp with the older amp in system and all is well. What are the possibilities of fault here, would like to handle myself without having to send back to Japan for warranty work.
tooblue
raindance
56 posts
 
Don't know what you have but it's possibly setup for 100 volt Japanese power which could cause it to blow up pretty fast if you're using 120 volts.

tooblue OP
1,890 posts
 
Raindance, thanks for your response, it is a Yamamoto Soundcraft HA-03 headphone amp that was built for the american market special order by me. The amp that it is replacing is a Yamamoto Soundcraft HA-02 built for me 16 months ago, and it has functioned flawlessly since its arrival. My dilemma is I am almost sure that it has to be a simple fix and believe that it would be in my best interest to have it looked at by a local tech and diagnosed rather than to ship it back, was just looking for some likely possibilities and possibly a worst case sennario. The amp sells for $1,600.00, so it is a bit of an investment. 
raindance
56 posts
 
Where are you located? I could look at it. I'm in NC.
tooblue OP
1,890 posts
 
I am in Humble Texas a suburb of Houston. 
schubert
7,386 posts
 
Humble Texas might well be greatest oxymoron in history !
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