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No sound from my Marshal Guitar Amp - Audio & Video Receivers

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Your Ic audio amplifier maybe is damaged

Posted on Apr 13, 2008

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I have a Sony STR-DE135 receiver emitting a persistent hissing sound on all functions and inputs (CD, Tuner, TV/Sat, MD/Tape, Video). I have a pair of Boston Acoustic CR5 speakers attached. Any ideas on...


most hissing problems come from earth issues within the system them selves, i dont recommend taking the case of and plugin it in to start testing if its an earth problem. So my best solution is to simply take it your local music or electrical shop and pay for a repair or see id they can diagnose the issue, other than that i dont have a solution for you. I have a little guitar amp which was buzzing it's little heart out, but when i touched my guitar strings the buzzing stops (as i become the earth on touching it) so i tried my guitar on a different amp and it was fine, so my little amp was the problem, i took it apart and noticed that the screw for the earth was loose, once i tightened it the problem stopped and all is good. best regards.

Oct 30, 2013 | Sony STR-DE135 Receiver

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My Marshal Amp MG50DFX sound is very soft even tho the volume is on max. when I switch on the gains circuit and turn up the gains control there is louder sound, but a humming niose also, what can the...


First of all please check your cables because this kind of problems mainly arise due to cable errors.Second solution is check your input.For an example try a another input from a DVD player or etc.Third solution is ,you have to check your amp's mic volumes,please reduce your mic volume fully.Check you equalizer too,Please check and inform me if it doesn't work

Sep 15, 2011 | Audio & Video Receivers

1 Answer

I want to connect a guitar and mini amp so i can use the multi-fx processor. can you help?


Connect the guitar out to the FX input and connect the output jack of the FX to the Amp input.You will need two guitar cables for that.bobhifi_8.jpg

Mar 11, 2011 | Audio & Video Receivers

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Hi, i just bought a gnx-3 guitar processor and it hums loudly.


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} Sounds like a bad cable or pickup. Set the volume to a level that you can tolerate. You may want to turn off the amp between each of these steps. Unplug the cable from the amp; if the hum does not go away you have problems with the amp. If it does then plug the cable into the amp and short the end that plugs into the instrument. If the hum goes away it is the pick system in the instrument, if not you have a bad cable.
Good Luck
Gilshultz

Mar 01, 2010 | Audio & Video Receivers

1 Answer

My Behringer gx212 ultratwin amplifier started to lose volume last night at band practice and then I smelled buring wiring. I think I lost or am in the process of losing the amp transformer. I think the...


Hi I just recently purchased a Behringer GMX 212 and had similar volume dropout on the clean channel only Channel 2 works better and has more punch in clean mode.I went to the shop where I purchased it with a 7 day warranty from some indian dude here in Nadi Fiji, and there was another GMX 212on the floor so I decided to try it out. This was a new amp. I plugged into the clean channel and turned it up full volume on guitar and amp adn heard the volume drop of in the amp in almost a curve and then the whole amp just cut out. We unplugged and waited, turned the amp off, and then on and stil no sound. We then tried the guitar and cord in another amp. The other amp was fine. Can you solve this problem.......my gut feeling is this happens a lot to Behringer amps.

May 08, 2009 | Audio & Video Receivers

1 Answer

I turn on the amp and there is loud feedback but no sound from guitar. there is a red wire a white wire then a black wire connected to the two but is open on other end?


Hi

It very much sounds like you have a broken guitar lead if I understand what you are describing and there is no connection at the other end. Can you borrow a lead from someone elese to check to see if it is.

What sort of feedback do you get, is it like a humming sound?

regards
robotek

Nov 10, 2008 | Audio & Video Receivers

1 Answer

Peavey banit 65 guitar amp. When turned on it makes a loud almost feedback sound with out anything pluged into it.


A few things can cause it. Bad ground\bad power supply filter capacitor\bad low level op amp IC. You most likely have a bad power supply or trouble at your input jack. Good luck!

barneyluc

Oct 09, 2008 | Audio & Video Receivers

1 Answer

Guitar amplifier cracks when turning off


So when you hit the power switch to turn it off you get a crackling sound? This is fairly common with many guitar amps as they don't have a relay which cuts the speaker output when the switch is turned off. What you are hearing is the capacitors draining down. If all else works ok with the amp then there's nothing to worry about.

Oct 06, 2008 | Audio & Video Receivers

1 Answer

MY FENDER GUITAR AMPLIFIER IS MAKING A HUMMING BUZZING NOISE


Not sure yet, but before considering a fault with the amp, does it only make this humming noise when not plugged into the guitar? I am thinking that the cable might be faulty.

If it while the cable is plugged in the guitar, does the humming disappear when you turn the volume control(s) down on the guitar? I am thinking that one or pickups may be faulty.

Sep 14, 2008 | Audio & Video Receivers

1 Answer

I have a mesa boogie f-100 guitar amp that seems to not have enough power its alot quieter than other 100 watt stack and alot of buzzing when not in use


sounds like you need new power tubes (they are the larger ones closest to the opening in the back).  When replacing power tubes it is extremely wise to replace all 4 at the same time.  If you an not comfortable doing this on your own, take it to your local shop/guitar amp tech.

Aug 17, 2008 | Audio & Video Receivers

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