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
geoffkait's avatar
geoffkait
23,365 posts
 
 
bcowen

"Even "non-audiophile" fuses give up sometimes after a period of use. I've had Buss and Littelfuses pop for no apparent reason."

I suspect it's safe to assume that happens a hundred times more often than for aftermarket audiophile fuses.

kennythekey OP
571 posts
 

Thanks, everyone.

I'm now wondering if it may have been caused by static? We have low humidity here in Colorado, and frequently I get a spark when grabbing the volume control of the line stage. More so, than my other components. I'll try grounding the unit, because the power cord is a built-in two prong job. A humidifier may also help.

Kenny

noromance's avatar
noromance
9,404 posts
 
There are/is a thread on this issue with the recommendation of using a rating above the replaced original. 
kennythekey OP
571 posts
 
I read a post saying that, I should be fine with the HiFi Tuning 500v rating over the original 250v rating because the current rating is the same. The fuse is a fast blow version, so the same as the original.
Kenny
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

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