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		Hi for some weeks I have a problem with the red board 
I see a error  No Amplifier connected
I have test this with 2 antennas and also with 2 amp boards 
All with 2 different  ferrite antenna  
1 on the roof  and for this moment 1 into this room 
The firmware version I have is now 8.0  
But also with the 7.4 version I have the same problem 
Ware can I look for fix this problem ?
Greetings  Gert
![[Image: no_amp.jpg]](http://www.weerstation-woerden.nl/foto/no_amp.jpg) 
	 
	
	
	
	
 
 
	
	
	
		
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		Does the LEDs on the amp turn on?
	
	
	
	
	
 
 
	
	
	
		
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		 (2016-09-04, 20:08)DelandeC Wrote:  Does the LEDs on the amp turn on?
Only the Red led is on  if I see the error  
No Amplifier connected
Green and Yellow are off
now the amp is turning on by him self ?  and I see blinking the  4 Yellow led  and also the Green led is now on and also the Red 
its very strange but the amp is turning off and on by him self
	 
	
	
	
	
 
 
	
	
	
		
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		Did you try a other cable?
	
	
	
	
	
 
 
	
	
	
		
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		 (2016-09-05, 04:56)DelandeC Wrote:  Did you try a other cable?
Yes  I  have
	
 
	
	
	
	
 
 
	
	
	
		
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		Now I see into the screen from the board  a new error
I see now  into the SYS option   Vin Too low !
don't know if this normal ?
	
	
	
	
	
 
 
	
	
	
		
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		 (2016-09-05, 17:55)Rothuize Wrote:  Now I see into the screen from the board  a new error
I see now  into the SYS option   Vin Too low !
don't know if this normal ?
No this is not normal, it is telling you that your power supply is faulty or underpowered.
Try a different power supply that can supply 5 to 5.3V at a minimum of 2A.
Ben.
	
 
	
	
RED Station: 878,   Flightradar24: F-EGLF1,  Open Glider Network: Aldersht2, PlanePlotter: 
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		 (2016-09-05, 18:46)Benedict.Smith Wrote:   (2016-09-05, 17:55)Rothuize Wrote:  Now I see into the screen from the board  a new error
I see now  into the SYS option   Vin Too low !
don't know if this normal ?
No this is not normal, it is telling you that your power supply is faulty or underpowered.
Try a different power supply that can supply 5 to 5.3V at a minimum of 2A.
Ben.
Thanks Ben  
Only I do not have a extra power supply for this moment
for now I have it into the USB from the computer .. and I know this will not by a good idea,,  but its for this moment working  4.9V
I do have a power supply for the iphone but I think this will by also not a good idea
I will look tomorrow for a power supply
maybe this is also the problem with the Amplifier  to low power  and the Amplifier turns off ??
for this moment I run the board with 2 Amplifiers  2x ferrite antennas  now I hope all will by work ok again
thanks for this info
greetings  Gert
	
 
	
	
	
	
 
 
	
	
	
		
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		Try the PS for your iPhone
Maybe you have meassured 4,9 with a voltmeter, but it don't tell you how noisy it is 
 
/Richo