2. misc-audio
  3. 127566-3884

Lemon HiFi-Tuning Fuse?

After researching the cause, I can find no reason why my HiFi-Tuning fuse simply blew in my Boulder L3AE line stage.

This was at first scary, because I had my line stage serviced and recapped last year by Boulder Amplifiers. When the fuse blew, I got that usual sinking feeling, but after replacing the HiFi-Tuning fuse (1A, 500v) with the original Boulder fuse (1A, 250v), no problems.

My power is also stable. And, I have my Boulder line stage plugged into a Brick Wall surge protector that is shared with my TT motor controller. The motor controller is just fine, so no issues there.

Has anyone experienced these fuses just giving out? I've only had my fuse for about a year, so could this just be a lemon?

Kenny

kennythekey

Showing 2 responses by pbnaudio

pbnaudio's avatar
pbnaudio
1,610 posts
 
A fast blow fuse as a AC mains fuse feeding a presumably linear power supply (Transformer/ Diode Bridge/ Capacitor) is highly unlikely,  much more common is a slow blow for this application, your original fuse will have some letter stamped into the end cap identifying if its a slow blow or a fast blow.

Good Listening

Peter

pbnaudio's avatar
pbnaudio
1,610 posts
 
Different manufactures have different codes for fast blow and slow blow, the letters F and T does not automatically mean Fast  or Slow.  

As stated earlier it is most likely a slow blow fuse thats employed as the mains fuse in you Boulder preamp but you should consult with them.  FWIW I'd forget all about any aftermarket "hifi" fuses and go with a industrial grade fuse readily available form reputable suppliers like Mouser for an example.

Good Listening

Peter


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