APOX volume-input for Aleph P1.7 question - Page 3

Sheldon · 31st October 2009, 05:44 PM

I think the jumpers are there if you want to do some programming. I don't believe they are used for normal operation. I'd look for a simple error somewhere (that's usually what I end up finding in my projects). LED's oriented correctly?

Sheldon

Leeuwarden · 31st October 2009, 05:56 PM

I guess the leds are OK. The guy I bought it from used to have it in working order... (He is an electronics engineer but he is not giving me support I'm afraid...). Actually I can think of nothing else to check. Maybe it is something in the firmware menu?

Leeuwarden · 31st October 2009, 08:57 PM

Removed the input selector just to be sure... Still no sound.
Going to remove the Aleph's next and see if it works as a passive attenuator...

Leeuwarden · 31st October 2009, 09:52 PM

Using it as a passive attenuator. Have sound on one channel only when I turn the volume way up... Going to check everything tomorrow.

Cobra2 · 31st October 2009, 11:41 PM

Are the LED's mounted with "flat-side" out? They should blink.
And, I think you need to ground the -(negative) if you use single-ended input?

Arne K

Leeuwarden · 1st November 2009, 06:18 AM

I'm afraid I don't know what you mean with "flat side out". Leds are not blinking in any way. (I even turned out the lights to check if they were burning very low...)

The software gives the possibility to use the volume board single ended. This option is switched on so there is no need to connect - to ground.

Cobra2 · 1st November 2009, 07:30 AM

Flat side = cathode, facing out toward the board-edge

Arne K

Leeuwarden · 1st November 2009, 10:28 AM

Looks like you are right Arne! But would the wrong position of the leds influence the functioning of the volume board?

Jan

Leeuwarden · 1st November 2009, 11:16 AM

Put the led's in the right position. On led blinking and one led blinking only as i turn up or down the volume.

Cobra2 · 1st November 2009, 11:48 AM

One problem fixed..., and one to go?

Arne K

31st October 2009, 11:41 PM	#25
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	Are the LED's mounted with "flat-side" out? They should blink. And, I think you need to ground the -(negative) if you use single-ended input? Arne K __________________ Ars longa, vita brevis

1st November 2009, 11:48 AM	#30
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	One problem fixed..., and one to go? Arne K __________________ Ars longa, vita brevis

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31st October 2009, 05:44 PM	#21
Sheldon diyAudio Member Join Date: Dec 2003 Location: San Diego	I think the jumpers are there if you want to do some programming. I don't believe they are used for normal operation. I'd look for a simple error somewhere (that's usually what I end up finding in my projects). LED's oriented correctly? Sheldon

31st October 2009, 05:56 PM	#22
Leeuwarden diyAudio Member Join Date: Nov 2002 Location: The Netherlands	I guess the leds are OK. The guy I bought it from used to have it in working order... (He is an electronics engineer but he is not giving me support I'm afraid...). Actually I can think of nothing else to check. Maybe it is something in the firmware menu?

31st October 2009, 08:57 PM	#23
Leeuwarden diyAudio Member Join Date: Nov 2002 Location: The Netherlands	Removed the input selector just to be sure... Still no sound. Going to remove the Aleph's next and see if it works as a passive attenuator...

31st October 2009, 09:52 PM	#24
Leeuwarden diyAudio Member Join Date: Nov 2002 Location: The Netherlands	Using it as a passive attenuator. Have sound on one channel only when I turn the volume way up... Going to check everything tomorrow.

1st November 2009, 06:18 AM	#26
Leeuwarden diyAudio Member Join Date: Nov 2002 Location: The Netherlands	I'm afraid I don't know what you mean with "flat side out". Leds are not blinking in any way. (I even turned out the lights to check if they were burning very low...) The software gives the possibility to use the volume board single ended. This option is switched on so there is no need to connect - to ground.

1st November 2009, 10:28 AM	#28
Leeuwarden diyAudio Member Join Date: Nov 2002 Location: The Netherlands	Looks like you are right Arne! But would the wrong position of the leds influence the functioning of the volume board? Jan

1st November 2009, 11:16 AM	#29
Leeuwarden diyAudio Member Join Date: Nov 2002 Location: The Netherlands	Put the led's in the right position. On led blinking and one led blinking only as i turn up or down the volume.

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