Strange sound fom MP4 player.
 

I have 2 different MP4 players (3rd Gen Clones) like the Nano.
[img=right:4f711e7d37]http://img401.imageshack.us/img401/5849/mp4playerminiwebcj5.jpg[/img:4f711e7d37]
And both of them makes noises when some of the graphics change on the display (like animated menu). It's ok when it is in the main menu but one of them (a black one from ASK) make the noises when it is in the music windows. And that's not god.

Firmware 9.1.52
Chip AK 1025

Anybody how knows how to get rid of those noises?

/Filuren

Re: Strange sound fom MP4 player.
 

Hello, this sound is no so strange, i use headphones all time, in pc, portatil, pmp, mpx, etc and for strange what appears in all my pcs, and laptops i always have these sound, is strange because seems caused by changes in screen but is no produced by the monitor (yes, i have tryed with monitor off), could be the video controller generating these interference with the sound controller, in pc i fixed some times put appart the video card of sound card (sometimes i have to use a faraday mesh in sound card) but in MPX the video controller and sound controller are same chip or are so close so you can't do any.

damned miniaturizing :twisted: :evil: :twisted:

regards

Re: Strange sound fom MP4 player.
 

Thank you for the answer.

I hope I will find a firmware that don't uses all that graphics when playing music.

nooooooooooooooooooooooooooooooooooooooooooooooooo ooooooooooooooooooooooooooooooooooooo!
u fool leave ur players firmware alone! read all the storys of people screwing there players by upgrading firmware.

filurenlasse , changing the firmware would likely not solve the problem. Most firmwares usually have moving graphics, so it would still be the same. Besides, it would be extremely difficult to locate a compatible firmware for your player.

Due to the the interconnects being very close to each other on the PCB, and usually no proper shielding is done, the screen interconnects would interfere with the audio ones.