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Loud buzz TKO 65 amp makes a loud buzz all the time. p.s. this happened before and we found a loose cap on the board.

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Check out main smoothing caps

Posted on Nov 12, 2014

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Posted on Jan 02, 2017

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SOURCE: Comp light stays on all the time

"Comp" usually stands for compression. If the amp works OK but light is on, there is a problem in the compression circuit.

Posted on Jun 13, 2009

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Klh powered subwoofer model ASW10-120B... when you plug in to power... it makes a loud buzzing/humming noise

I would check the caps on the power supply. They are rather large electrolytic capacitors that will look like they burst and/or leaking. When these die, the caps ground and the sub will make a loud buzzing sound. If you are handy with a soldering iron you can replace them yourself. Replace them with the same voltage or a little bigger and same with the size.

If the cap. says 16v 4700pF on it, for example, a 20v 5300pF or a 16v 6200mF cap. will work for this application.




Jan 05, 2016 | Audio Players & Recorders

1 Answer

Microwave makes a loud buzzing noise

The buzzing sound could be from loose laminations on the high voltage transformer, or from loose mounting screws for the transformer. This requires investigation by a qualified technician as there are lethal voltages associated with the transformer. It could also be from a loose cover. First check that all the cover screws are tight.

Mar 21, 2014 | Electrolux Microwave Ovens

1 Answer

I have 2 mackie mr8's and only one does it. can you help me. basically when i turn it on after it being off for a while, the driver 'sucks' in and makes a loud buzzing sound. can you help please

For some reason the power amp is saturating to one side of the power suply rails. This can happen if :
1. Power supply looses one of the polarities.
2. The Power amp circuit loses the DC feedback and saturates to one of he rails.
3. A circuit board trace or bad solder loses one polarity to the power amp.

DO NOT permit the unit to run this way for any length of time because it will burn out the voice coil of the speaker.

The buzzing is due to the amp losing feedback and basically connecting the speaker to one side of the power supply. The ripple current of the supply causes the buzzing.

Put a 40 wat light bulb in series with the hot lead of your line cord to act as a current limiter while troubleshooting the problem. You can find the problem with only a voltmeter.

PARTS OF THE SCHEMATIC "MAY" be close to this document:

Dec 02, 2010 | Mackie MR8 150W 8 Active Two-Way Studio...

1 Answer

Loud pop from projection TV, then no screen

Ur power board it dead.Replaced capacitors that puff up or pop open.Or replaced the whole board.

Dec 23, 2009 | Sony KDF-E50A10 50 in. LCD HDTV

1 Answer

Won't do anything but buzz very loud

The input or the CD input jacks may have a bad solder joint on the circuit board. If the amp is still under warranty, take it in to be serviced. If not you will have to have someone work on it. If you do it yourself, make absolutely sure there is no power running to it. Also be aware that the filter capacitors in the power supply can retain a dangerous charge. Sometimes you can discharge these by unplugging the amp from the wall power while it is on with the volume very slightly turned up. Once you have the circuit board out, you can wiggle the jacks and see if they feel loose. Look at where they are soldered to the board to see if they need to be resoldered. If that is not the problem then you will need a schematic and some troubleshooting experience and tools. Hope this helps.

Aug 06, 2009 | Marshall MG10CD 10 Watt Combo Amplifier

1 Answer

Nothing but loud buzzing coming over the amp when trying to play. Any suggestions?

If the buzz disappears when you unplug the cable from the amp. check your cable.
If the buzz disappears when you unplug the cable from the instrument, there's something thay may have come loose inside the instrument.
If you unplug the cable from the amp., and the buzz persists, you'll have to have a competent tech. check your amp.

Apr 14, 2009 | Line 6 Spider Iii 15 Modeling Guitar...

1 Answer

Comp light stays on all the time, like the amp is overloaded. but i have the speaker disconnected, and all the levels turned all the way down. its a peavey tko 65 bass amp

"Comp" usually stands for compression. If the amp works OK but light is on, there is a problem in the compression circuit.

Apr 10, 2009 | Audio Players & Recorders

4 Answers

Loud buzzing when amp connects to guitar

Is there a loose connection anywhere?

Jan 03, 2009 | Music

3 Answers

Loud Buzz

If the sound is more of a low hum than a buzz, you probably have bad capacitors in the power supply...Time to take it to a shop.

Sep 21, 2006 | KLH ASW10-120 Subwoofer

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