one unlit LED on 3B

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bunkertoy

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one unlit LED on 3B
« on: 2 Feb 2019, 03:44 pm »
Hi,
I'm not getting any sound out of my left channel. The left LED light is not coming on. Looking at Bryston manual it says no power to that channel.
Does that mean it could be dead ?
Or is this something serviceable ?

The timing on this sucks, I just bought some new PMC Twenty .22's was working fine for the 1st week.

Just need to know if I should bother packing up the amp and sending off to Peterborough

bunkertoy

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Re: one unlit LED on 3B
« Reply #1 on: 2 Feb 2019, 04:08 pm »
Perhaps it's just a blown fuse ?
I'm trying to pop out the fuse to inspect, but those fuse caps are a bitch to open.

James Tanner

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Re: one unlit LED on 3B
« Reply #2 on: 2 Feb 2019, 06:44 pm »
Perhaps it's just a blown fuse ?
I'm trying to pop out the fuse to inspect, but those fuse caps are a bitch to open.

Hi

If its the older 3B you have to push the fuse cap inwards then turn.

james

bunkertoy

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Re: one unlit LED on 3B
« Reply #3 on: 2 Feb 2019, 07:07 pm »
Just never been opened was kind of stiff, but I got the fuse out.
blown fuse... I replaced it and everything seems to be fine. I'm assuming if there was a bigger problem the new fuse would've blown immediately.

Think I might be fortunate if its just a 85 cent fix

Elizabeth

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Re: one unlit LED on 3B
« Reply #4 on: 2 Feb 2019, 07:12 pm »
Fuses actually wear out! From turn on... The added pressure at turn on, over time and repeated stresses, weakens the fuse until POP! gone. So I would say your are 100% OK.
Just a few days ago some thread (where/??) with pictures of old fuses and the damage along the fuse element as time passed. Was cool.

bunkertoy

  • Jr. Member
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Re: one unlit LED on 3B
« Reply #5 on: 2 Feb 2019, 07:24 pm »
Thanks for that Elizabeth, good to know.

It was especially disappointing because I'm just breaking in my new PMC Twenty .22's
But thankfully I'm back up and running.
Cheers