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In Reply to: RE: Power-on funtion of amplifier on the fritz. posted by Duster on July 12, 2017 at 17:42:09
red and green indicators status. Can you clarify?
berate is 8 and benign is 9
There are three colors involved with the 2-channel indicator lights:
Green, Amber, and Red.
Green lights for both channels are indicated at all times during the power-on process, and while idle, without load.
In a nutshell, the issue is the green indicator lights turn-on even when the power switch is in the off position. The power amplifier becomes warm to the touch in a normal way when idle, so it seems to be powered-on even when the power switch is in the off position. I'm hesitant to connect the power amplifier to loudspeakers until I get an idea of what's going on.
Is there a 20 year Bryston warrant on this? That may be your best bet
It's a Lexicon power amplifier made by Bryston, so the 20 year Bryston warranty does not apply to the product. The Lexicon NT amplifiers made by Bryston had a 5 year warranty.
Something to note is I can hear the soft start relay click a few seconds after plugging the power cord into an AC outlet, so it seems as though the power amplifier is actually powering-on, but the issue of the power switch not functioning as it should is a very odd thing.
I suppose I'll just have to test it under load. I'll use a raw driver that is expendable to find out if the power amplifier outputs are functioning properly. If the power amplifier simply won't power on/off via the power switch, but otherwise works fine, it will be an issue I can live with. I'll ask Bryston for their advice about the safety factor.
I know some equipment can have a big surge due to caps, huge transformer..
So a pulled out powercord could?? cause the fuses and switch to fry.
What do you think, Duster?
(or the swittch being broken.. The amp had to be on thus the unplugging surge and thus the blown fuses??)
The day before, the amp was turned-off via the power switch and the power cord remained plugged-in. The next day, the power cord was still plugged-in, and the power switch remained in the off position.
When the switch was pressed to the on position the green indicators lights did not illuminate, and the soft start relay did not kick-in. There was no indication of a sudden event; no popping sound nor smell involved. The first thing I checked was if the power cord was properly plugged-in at both ends of the power cord, and all was okay.
I then re-tried the power switch to see if the soft start function was taking far more time for the relay to kick-in, since on some occasions in the past the indicator lights would not illuminate nor the relay kick-in for up to 10 seconds or so. This issue might be a key factor regarding what could have been wrong to cause the event to happen. Perhaps something was on its way to failure. Maybe there was a problem with the switch that caused the fuses to blow and for the switch to perhaps be welded in the on position like you mentioned.
At this time, every time I plug-in the power cord, the green indicator lights immediately glow, and 4 seconds later the soft start relay kicks-in perfectly.
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