A lot of noise on the new DD unit

mojster666 · 22nd September 2011, 23:36

Today I quickly connected my new DD unit. There was a very annoying noise. Radio reception is ok, but at low volume, it is very annoying noise. The same situation is with the music on the USB flash. If the volume is set to "0", then there is no noise. If the volume is set to "1", noise is heard. Also, the "2", "3" and "4" are noisy. When I set the volume to "5" then the music is louder than noise.
In short, listening at low volume is very disturbing. Is there something wrong with my DD unit, or is this normal?

Banjo · 22nd September 2011, 23:50

I don't know what is wrong - but it is certainly not normal. Mine has no strange noises at all.

HarryM1BYT · 2nd October 2011, 09:49

No noise here either.

If I turn the volume up to full, particularly when the satnav is booting up, I can just about hear digital noise interference with the engine not running, but other than that nothing untoward.

Does the noise appear with engine running or not running?

mojster666 · 2nd October 2011, 17:53

Experiments like this. The engine is turned off. The doors are closed. Now you have silence in the car. Set all tone controls to zero (loudness off, bass to 0, treble to 0). Set the volume to 1. Now set the bass to +1. Appears very annoying noise (like "sssssssssss"), which is audible up to volume 5 (and beyond). Noise appears as soon as any sound control is activated.

This only happens on my DD unit, or even on yours?

22nd September 2011, 23:36	#1
mojster666 Newbie Rover 75 Saloon Join Date: Aug 2007 Location: Novo mesto Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	A lot of noise on the new DD unit Today I quickly connected my new DD unit. There was a very annoying noise. Radio reception is ok, but at low volume, it is very annoying noise. The same situation is with the music on the USB flash. If the volume is set to "0", then there is no noise. If the volume is set to "1", noise is heard. Also, the "2", "3" and "4" are noisy. When I set the volume to "5" then the music is louder than noise. In short, listening at low volume is very disturbing. Is there something wrong with my DD unit, or is this normal? Last edited by mojster666; 22nd September 2011 at 23:39..

2nd October 2011, 09:49	#3
HarryM1BYT This is my second home 75 Contemporary SE Mk II 2004 Man. Sal. CDTi 135ps, FBH on red diesel, WinCE6 DD Join Date: May 2010 Location: Leeds Posts: 17,273 Thanks: 2,160 Thanked 2,061 Times in 1,586 Posts	No noise here either. If I turn the volume up to full, particularly when the satnav is booting up, I can just about hear digital noise interference with the engine not running, but other than that nothing untoward. Does the noise appear with engine running or not running? __________________ Harry How To's and items I offer for free, or just to cover the cost of my expenses... http://www.the75andztclub.co.uk/foru...40#post1764540 Fix a poor handbrake; DIY ABS diagnostic unit; Loan of the spanner needed to change the CDT belts; free OBD diagnostics +MAF; Correct Bosch MAF cheap; DVB-T install in an ex-hi-line system; DD install with a HK amp; FBH servicing. I've taken a vow of poverty. To annoy me, send money.

22nd September 2011, 23:50	#2
Banjo Posted a thing or two MG6 Magnette 1.8 Tci SE Join Date: Jun 2009 Location: Shrewsbury Posts: 1,300 Thanks: 19 Thanked 27 Times in 27 Posts	I don't know what is wrong - but it is certainly not normal. Mine has no strange noises at all.

2nd October 2011, 17:53	#4
mojster666 Newbie Rover 75 Saloon Join Date: Aug 2007 Location: Novo mesto Posts: 14 Thanks: 0 Thanked 0 Times in 0 Posts	Experiments like this. The engine is turned off. The doors are closed. Now you have silence in the car. Set all tone controls to zero (loudness off, bass to 0, treble to 0). Set the volume to 1. Now set the bass to +1. Appears very annoying noise (like "sssssssssss"), which is audible up to volume 5 (and beyond). Noise appears as soon as any sound control is activated. This only happens on my DD unit, or even on yours?