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No video output on all formats with a top bar hum & buzzing

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Start by making sure you haven't switched your audio and video connections from the player to the TV (if you're connecting that way).

If the player is hooked up using an RF output to the TV's antenna jack, and you watch it on channel 3 or 4, try switching to the other channel. Most players today have only video and audio outputs, so this might not apply to yours.

If it's hooked up correctly and still has the trouble, there's a component problem inside. But with the low cost of DVD players today, it's less expensive to replace it than to have it repaired. (Most service places won't even offer repairs on DVD players. It's a complete waste of their time.)

Posted on Nov 26, 2008

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Acoustic solutions as122 40w x1 , 20w x3 . awfull buzz/hum on right channel output similar to the hum from a 50hz strip light


You're half-way there. Web search "audio system hum" and factor in those things that match your scenario.

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I have a Boston Acoustics VR-500 Subwoofer with a problem. As soon as anything is plugged into the line level RCA jacks, the subwoofer produces a loud buzz/hum. I have tried connecting it to the subwoofer...


I'm thinking you have an open shield ground on the RCA input side. Connecting speaker inputs possibly restores the ground. Try connecting the high level inputs then disconnect the remote end of the cables (floating the grounds).

Then get out an ohmmeter and find that open circuitor or bad solder joint between RCA ground and real ground in the speaker's amplifier. Or.... if speaker ground kills the hum and you want to use RCA Line Level input to the sub, just connect one minus speaker output on your source amp to one minus on the sub's amp.

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Left speaker has developed a hum. Checked connections and all seems well. Sounds raspy like the speaker has blown.


This is likely due to a problem with the amplifier. You may have turned up the amp to the point of overdriving the speaker. The distortion at these high levels cause clipping and turn what was once crisp, clear sound into a muddied, garbled mess.

If the speaker is left connected to that source long enough, damage to the speaker and the amp may occur.

Without changing positions of the speakers: You can disconnect the affect Front or Rear L & R speakers and swap them (connect the L speaker to the R output of the amp and vice-versa). If the buzzing / hum "moves" to the other speaker, then the amplifier has the problem. If the buzzing / hum stays with the same speaker, the speaker has issues and is likely "blown".

Either way, it is probably not going to be a "cheap fix"

Good luck!

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My tv makes a low humming buzzing sound about 3/4 of the time. One quarter of the time it does not buzz. When it buzzes a line moves fairly slowly from the bottom of the screen up to the top continually....


there is a bad or what i call intermittant connection on the power supply board. when the bar and hum appears try firmly bumping with the palm of your hand the side of the set. if the hum and line go away then your set will have to go into the tv shop and the connectors on the p/s mod have to be reseated also the solder connections should be checked... this should help you a lot.

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Makes a buzzing/humming sound when playing a dvd or cd


that is a problem with the amp.
does this player have a dvd player built in or not

May 11, 2009 | Televison & Video

1 Answer

A couple of weeks after initial setup of my brand new Onkyo XT-SR606 receiver, I noticed a loud buzzing noise that starts up approximately 10 min after the receiver is turned on. The buzzing is definitely...


The "buzz" you hear is a power hum made by the power supply transformer. It's technically called "Lamination hum" caused by the revering of electrical current through the power supply transformer. In some cases the hum can vibrate the chassis causing other loose material to vibrate. If you can, go to your dealer and check to see if other units of this same type typically make a hum this loud, and if not, see if he can solve the problem for you.

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make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet

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Hi chupetin2

If the problem is present with ONLY the speakers connected, that is no other powered devices like subs, or input/output cables, it will be a power supply problem inside the amp. If you have electronic fault finding skills, there will probably be a capacitor in a regulated rail that has failed.
If you do have a sub connected, be sure it is powered from the same mains source as the amp, or at least a GPO that is on the same phase. Different phases will induce mains hum, as will multiple earths. Try also temporarily moving the amp(whilst monitoring the hum) from where it is sitting and see if the hum is being induced into the amp by any other devices

Happy to talk to you more about this. Just ask:)

regards
robotek

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Ok do you live within 1km of a sub station. As these produce a high emf output and can affect radio equipment in a similar way???

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Amp works on off on off


The buzzing is possibly the electrical mains hum at 50hz, all amps have a hum/buzzing... if you have to tap the jack lead between the guitar and amp it could simply be a connection problem, the cable may be old and internally damages, maybe loose wiring on the other side of one of the input jacks

Jay.D Bsc Music Technology

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