Question about Samsung DVD-V4600 DVD Player/VCR

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Will not power on just hums - Samsung DVD-V4600 DVD Player/VCR

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Check the power button

Posted on Feb 04, 2010

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The 43 Volt Zener Diode is shorted, this occurred with my dvd-v4600. It's a glass colored zener diode near the buzzing transformer, it has the part number z43 stamped on it. Also since it was on almost 24x7 for over five years it tended to dry up the electrolytic capacitors on the power supply. An ESR meter would be needed to measure the capacitors so you know which ones to replace. The remaining electrolytics on the VCR and DVD board should be checked, this unit has a lot of them.

Posted on Oct 22, 2011

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Posted on Jan 02, 2017

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Fisher&paykel ,smart drive excellence 7 .5 ,the washing machine stopped working during the pumping out of the water.no power on the top panel and a slight humming noise


What is it? No power to panel or slight humming sound which indicated there is power? Can't be both. I would suggest that the humming sound if you put it on spin, will be the drain pump trying to go. If pump is left humming like that it will get hot & shut the power off until it cools down again. Pump hums when it has a blockage & can'y spin. Clear the blockage.

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Bose radio bad hum


one of the most common sources of hum is a failing power supply.
I don't know your radio specifics..... however, some things to consider/try : if it can be battery powered, try it with batteries.
If hum disappears, then source is power supply. Power supply
hums are usually 60 or 120 Hertz (cycles per second). The most
common failure component in power supply, causing a hum, are
the filter capacitors. If you do try to replace these, be very careful
and discharge the old caps before you remove them - to avoid a
(potentially dangerous) shock... caps can retain a charge for many
days, sometimes. Another source of hum is if the radio is close to
a flourescent light, or other appliance which may radiate power. If so,
try moving radio. If the hum is high pitched, then more info is needed.
Hope this helps!

Jul 14, 2014 | Bose Audio Players & Recorders

1 Answer

The subwoofer output on my Kenwood VR-606 has suddenly stopped working. I have tried the "setup" several times, turning the subwoofer off and back on. Also, when I first power up the system, it emits a low...


It sounds like the problem is not with your VR-606. If you hear a hum from the sub, the problem is more likely to be in the sub's built-in power amplifier. However, it is worth resetting the amplifier to factory presets. To do this, unplug the power cable from the mains supply and reconnect whilst holding down the power on/standby key. If the hum persists, connect any powered speaker to the sub-out socket, power on and listen for the hum. If no hum then suspect the powered sub amp. Turn the sub on with no connection to the Kenwood VR-606. If hum persists, the sub has a problem and will need to be replaced or repaired. By the way, you said there is a low frequency hum through the 'speakers' for about 30 mins. Is that all speakers or just the sub? Hope this helps.
Cheers, Don.

Jul 06, 2014 | Kenwood VR-606 Receiver

1 Answer

Hum in my eons


The hum is because your connecting your speakers to the same power strip or extension cord, try connecting each one from different power source. I had the same problem with mine.

Feb 18, 2013 | JBL EON 15-G2 Powered DJ Speaker With EQ...

1 Answer

Mixing board hum


AC hum comes from poor grounding of components.

Jun 21, 2017 | Music

1 Answer

I have a pair of JM lab Electra 905 speakers, running through a DNM amp and power amps. When powered up, the left speaker makes a very loud humming noise. This has happened recently. I haven't changed...


Hello
Switch on your amp, keep its volue down to extreme low, and listen if there is still hum through the left channel or not. If still there is hum, the left side power amplifier section inside the amp;ifier is faulty. If htere is no hum at this state, hum enters thorugh the audio input terminal, and the input wires must be checked for open sheild connection. OK.

Apr 10, 2011 | Jmlab Electra 905 Speaker

1 Answer

Major hummimng noise when sub is connected to receiver.


Is the hum in the receiver-attached speakers or the sub?


Self-powered sub?


How is the sub attached - RCA or speaker-level?


Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.


If it hums with the sub attached, unplug the sub's power cord. Differences in AC ground potentials will generate hum across linked devices.

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1 Answer

NAD S300 Amplifer humming


You have either got a bad earth connection, or possibily there's a capacitor failed.
If you can't find a dodgy conection, I would replace the large Electrolytic Capacitors in the power section, they are used to take out 50hz hum in the mains electric, when they go you get that hum coming into your system.

Nov 15, 2009 | NAD S300 Amplifier

3 Answers

Steady Hum in Audio


Good catch Ray. Thank you for the info.

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