The NAD T775/T785 AVRs w/ HDMI 1.3 Thread! - Page 146 - AVS Forum | Home Theater Discussions And Reviews
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post #4351 of 4356 Old 06-11-2015, 05:10 PM
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thank you victor for the ZIP file

~~~ wwhlimi UART is for ipod interface
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post #4352 of 4356 Old 06-13-2015, 09:30 PM
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can any one post a picture of On Screen display from the new VM150 how is it different from the original VM100 ?
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post #4353 of 4356 Old 06-27-2015, 04:15 AM
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Has anyone experienced their T785 randomly turning up and down the volume? I see nothing on the OSD or the display that indicates the volume being raised or lowered. It just happens.

I've only experienced this while listening to radio, using the built-in tuner. But 90% of my listening at the moment is Tuner, so it might happen with other sources as well.

I suspected the remote at some point, but since I'm not seeing the volume being raised in the display, I'm ruling that one out.

I just updated to the latest firmware on all 4 components. I'll report how it goes now.

T785 w/ AM200 + VM150

EDIT: It just happened again, now I see the text "Check DSP board" in the display. Any pointers?
EDIT2: What is the DSP board? Is it one of the MDC modules?

Best regards
Jim

Last edited by itdk; 06-27-2015 at 04:38 AM.
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post #4354 of 4356 Old 07-07-2015, 12:25 PM
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Quote:
Originally Posted by itdk View Post
Has anyone experienced their T785 randomly turning up and down the volume? I see nothing on the OSD or the display that indicates the volume being raised or lowered. It just happens.

I've only experienced this while listening to radio, using the built-in tuner. But 90% of my listening at the moment is Tuner, so it might happen with other sources as well.

I suspected the remote at some point, but since I'm not seeing the volume being raised in the display, I'm ruling that one out.

I just updated to the latest firmware on all 4 components. I'll report how it goes now.

T785 w/ AM200 + VM150

EDIT: It just happened again, now I see the text "Check DSP board" in the display. Any pointers?
EDIT2: What is the DSP board? Is it one of the MDC modules?

Best regards
Jim
On addition to above post:

I sent it off for repair and they have returned with a suggestion that my house electrical outlet could be varying in voltage.
They have tested the unit by lowering the voltage to between 210-220volts, where the error can be reproduced.

After testing my outlets with a voltmeter, I have a steady 227volts of outlet output (europe is ~230volts).
They can't find other problems with the receiver and I'm lost for what the next step should be

I have the latest NAD firmware and the reciever has been sitting in the exact same spot, with the same speakers, cables and electrical outlet. Nothing has changed in the last 4-5 years.
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post #4355 of 4356 Old 07-08-2015, 02:06 PM
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Hej Jim.
I have a T175 with the same boards. Recently I experienced the volume going down. No one was touching the remote - but I could see on the display, that volume was going down. I then hid the remote under a pillow, and volume was still going down. I could turn up the volume with the remote, but again - no one touching it the volume again went down. Then I removed the batteries from the remote - and reinstalled the same batteries and problem was gone. Batteries are not used up so that cannot be the cause.
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post #4356 of 4356 Old Today, 09:17 AM
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I am also having the problem of volume ramping up and down on its own with my T775. I had this problem as well as a dead amp channel 2 years ago and by looking at the repair receipt the only thing that was changed was the amp board. I would love to know what causes this as well before my speakers are damaged.
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