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NEC TG-16/TE/TurboDuo => TG/PCE Repair/Mod Discussion => Topic started by: dave_van_damn on April 05, 2016, 03:14:41 PM

Title: DUO RX emits buzzing/humming sound from speakers
Post by: dave_van_damn on April 05, 2016, 03:14:41 PM
My Duo RX emits quite a lot of buzzing from the TV speakers when playing games. No audio skipping or anything like that - just a constant hum. It gets noticably worse when the screen fades to white or there's a white background on the screen.

Compared to my Breifcase set up, the hum is much louder. I figured it was a capacitor issue but I've searched the forums for info but people are saying that DUO-R/RX don't suffer from capacitor issues. Any ideas, gang?

Thanks again!


EDIT - Tried a bunch of different cables and eventually found one that doesn't have this effect, so I gues it was due to a cheap cable. Sorry!  :oops: :oops: :oops:
Title: Re: DUO RX emits buzzing/humming sound from speakers
Post by: Keith Courage on April 06, 2016, 05:51:25 PM
is this system by chance RGB modified? With an RGB modified system this is a sign of a poor quality cable
Title: Re: DUO RX emits buzzing/humming sound from speakers
Post by: dave_van_damn on April 07, 2016, 01:05:18 PM
Quote from: Keith Courage on April 06, 2016, 05:51:25 PM
is this system by chance RGB modified? With an RGB modified system this is a sign of a poor quality cable

No, it just uses the regular AV cable. I have 3 in total, 2 made the humming sound and the 3rd (which was of noticably better build quality) was fine. Although I've since noticed it's not outputting in stereo  ](*,)
Title: Re: DUO RX emits buzzing/humming sound from speakers
Post by: mickcris on April 07, 2016, 01:15:43 PM
Quote from: dave_van_damn on April 07, 2016, 01:05:18 PM
Quote from: Keith Courage on April 06, 2016, 05:51:25 PM
is this system by chance RGB modified? With an RGB modified system this is a sign of a poor quality cable

No, it just uses the regular AV cable. I have 3 in total, 2 made the humming sound and the 3rd (which was of noticably better build quality) was fine. Although I've since noticed it's not outputting in stereo  ](*,)

its probably a genesis 1/master system cable if its only one channel coming out.
Title: Re: DUO RX emits buzzing/humming sound from speakers
Post by: mickcris on April 07, 2016, 03:09:13 PM
also what power supply are you using?  an original or a cheap aftermarket one?  you could try a genesis 2 or ps2 slim power supply if you are using a cheap one.  the power supply could be what is causing the issue.