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XTi4000 being strange


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#1 kevvywevvywoo

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Posted 03 May 2011 - 09:43 AM

Hi, got an XTi4000 doing the odd strange thing.

ser no 8001574198




If I enter config (through the front panel) and scroll through the various settings, sometimes after I have reached the end item in the menu (bridge/stereo) and then press SEL/ENTER to exit, the amp will power-off. The relay clicks out, the display & backlight goes off and the blue power LED goes out.

The only way to get it working again is to either cycle the mains switch or pull the plug.

It isnt a bad connection or switch, it is linked to exiting the config screen.

Is this a fault, or do they all do that?

Cheers

kevin.


#2 Kevin Heber

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Posted 03 May 2011 - 03:25 PM

Either it's a fault or it just doesn't like you.  I'm assuming no speakers connected?

#3 kevvywevvywoo

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Posted 04 May 2011 - 02:21 AM

No just the mains supply connected.

It doesn't do it every time!

I have connected it to Sys Architect and it seems happy with the firmware version.



#4 Kevin Heber

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Posted 04 May 2011 - 07:46 AM

This sounds a bit like this guy's problem  http://www.crownaudio.com/forums/index.php?showtopic=3697

Have seen this behavior only this once.  We just had him take it into service.


#5 kevvywevvywoo

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Posted 04 May 2011 - 08:50 AM

Today it all powered-off without me touching it.

It was sitting with power-on no load no signal, I went to get a cup of coffee and when I came back the power was off. I had changed the mains lead to rule that out. It always powers back if i cycle the mains switch.

Can the CPU instruct a power-down? Or is it going to be confined to the PSU? This is a UK grey import so warranty void  rolleyes.gif



#6 Kevin Heber

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Posted 04 May 2011 - 12:53 PM

I've attached a short primer on the power supply operation.  Hope it helps somehow.

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