[m-c-e]

hi,

i recently bought a used 4B-ST / BP20 preamp combo and a pair of B&W nautilus 803 speakers from a reputable dealer in used high end audio gear. i am using a ps3 as CD player connected to preamp via musical fidelity V-DAC toslink. using audioquest unbalanced RCA interconnects from V-DAC to preamp and same cables from preamp to 4B-ST.

very happy with the results so far and a massive step up from my old denon integrated / wharfedale diamond combo. this was my first step into proper audiophile territory so you could say i am noobish.

only concern is that when i power down the 4B-ST i get the static discharge through my speakers (which I have been told is normal by the audio dealer) however the CH2 LED indicator on the 4B-ST front panel flashes red for maybe half a second which seems to coincide with a slight pop sound from CH2 speaker. i remember hearing the static discharge while demoing but don't recall any sort of pop and don't recall CH2 LED flash red.

initially i thought it was a problem with the power amp spoke with bryston support australia they advised to unplug all interconnects, power it up, power it down and check result. when i did this both LED's flashed red. took it back to audio dealer on bryston advice and although he disagreed there was anything wrong with the amp we were able to replicate the red LED in store so he happily swapped it out for another unit.

get home hook up the new amp - same deal. the pop seems to have gone but i still get the red LED fflash on CH2 when powering down. i've troubleshooted every aspect i can think of without resolve.

- swapped out unit
- tried different interconnects
- swapped interconnects
- tried different preamp inputs / outputs

i thought i had resolved it today by swapping out the interconnects from preamp to power amp. powered it up and powered it down - 2 green LED but much to my dismay, after a session of approx 45 mins usage, powred it down - red LED flash on CH2.

is this something i should even be concerned about and if i should be concerned, do you have any ideas what else i can try troubleshooting wise? is it possible that this could cause potential damage to my speakers?

thanks for your time and opinions.

cheers

matt

[m-c-e]

also, i'm a bit confused with bryston's 20 year manufacturer warranty terms / conditions.

i was of the understanding that unless the gear was purchased from an authorized bryston supplier the warranty was void (as per bryston website) however i read on a forum that this is not the case and the warranty is transferrable between owners.

this guy says bryston will honour the warranty regardless of change of ownership. he said if you want clarification to contact james tanner at audio circle, which is what brought me to this website.

hopefully james will catch this post, if not, anyone able to clarify the 20 year warranty policy?

cheers

[rob80b]

Hi Matt

If the amp sounds fine your most likely OK, the red leds on shut down are not common but not unusual, it could just be from the difference in using the 240v 50hz power.

The warranty
“As of 2006-02-22 Bryston will only warranty Bryston products purchased through authorized Bryston dealers”
http://www.bryston.com/pages/warranty.html

I guess that should read "all amps with a date code later than 2006-02-22".

The last STs came out in late 2001 early 2002 so your ok there, just check the date code on the back of your 4B to see how many years are left.
If your still concerned you can email James directly.

The forums makes things so close but yet so far away if you need to have things shipped halfway around the world.

Robert

[rob80b]

Also if memory serves me right, years ago Bryston did perform a retrofit to take care of the power up/down on some amps by adding a small circuit.

Robert

[Fernando]

The forums makes things so close but yet so far away if you need to have things shipped halfway around the world.

Robert

True, I quite agree ... I'm halfway south the world.
I wouldn't feel happy with one front panel flashing red when powering down.
There is a variable resistor clearly visible on the power supply board: changing its value, or cleaning it, might help.
But I'd never try that without tech advice.
First, I'd measure which is its actual Ohm value and compare it to the left one.
Hope I could be more helpful.
As Robert says: "If the amp sounds fine your most likely OK," - but a red LED doesn't look nice.

Fernando.

[good sound]

Hi Matt

If the amp sounds fine your most likely OK, the red leds on shut down are not common but not unusual, it could just be from the difference in using the 240v 50hz power.

The warranty
“As of 2006-02-22 Bryston will only warranty Bryston products purchased through authorized Bryston dealers”
http://www.bryston.com/pages/warranty.html

I guess that should read "all amps with a date code later than 2006-02-22".

The last STs came out in late 2001 early 2002 so your ok there, just check the date code on the back of your 4B to see how many years are left.
If your still concerned you can email James directly.

The forums makes things so close but yet so far away if you need to have things shipped halfway around the world.

Robert

Actually, and James can confirm this one way or the other, but I am pretty sure that the warranty on Bryston components can still be transferred from one owner to another as long as the original receipt is in possesion by the new owner and shows that the component was originally purchased from an authorized dealer. Stating that the warranty is only valid for pieces purchased from an authorized dealer does not indicate, in any way, that the warranty is no longer transferable.

[rob80b]

Hi Good sound

Welcome to the forums.

Bryston have always offered a transferable warranty, having purchased new and used since the 80’s I can attest to that.

But, with the proliferation of on line sales all manufacturers have had problems with grey market dealings of their product, and as a measure to protect their authorized trading channels they need an incentive for potential buyers to buy from authorized dealers.
Like most manufacturers, new Bryston products purchased after 2006-02-22 require an invoice from an authorized dealer for warranty repair.
Warranty
http://www.bryston.com/pages/warranty.html

Robert

[good sound]

Even the link you provided states that the warranty is still transferable from one owner to another as long as the new owner has the original bill of sale showing that the component was purchased from an authorized dealer. This was the only point I was trying to make for the OP. In your orignal response to his question of whether or not the warranty was still transferable it seemed to me that you were indicating that it no longer was, which would be incorrect.