Question about Music

Open Question

Marshall as50d crackling - Music

Posted by Anonymous on

Ad

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad
caroldon
  • 17129 Answers

SOURCE: I bought a Marshall as50d

This can be due to either a RUNAWAY of some power circuit or there is a dry point of soldering which seems to get aggravated when the board is working or heating.
So when the fault occurs check the power to the amplifier, the output stages. If a tap bring about life then the case of the dry soldering is justified.
If not this can be due to power failure due to semiconductor failure. A tracing with voltage/current/signal will be needed to confirm . USe a multimeter to check the voltage line , check the secondary to the circuits, specially the outputs.

Posted on Sep 02, 2011

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Had lots of buzzing coming from the back of Marshall AS50D. Removed the back cover and buzz gone. Any problem with leaving back cover off? Warnings on the back say not to remove the cover!


It was probably just loose screws and the cover was vibrating. Reinstall it and check that the screws hold in tight. If they're not, fill them with glue and some toothpicks, redrill the holes (the bit has to be as thick as the center of the screw, so that just the threads dig into the wood) and reinstall the grill.
If the vibrations persist, that means something else is loose. Try first with the screws that hold the metal chassis. Check for loose speakers, too. Then try the screws and nuts that hold the transformer, PCB, etc. These should have thread locker and not be loose, but if they are, clean it well with thinner and reapply some thread locker.
Only do this if you have experience and know what you are doing, and the safety precautions you have to take. Don't think you know, read safety precautions when working with electric equipment. The safest bet is to take it to a tech.
Also, removing the cover changes the sound of the amlifier. It should sound more bassy. It doesn't have tubes, so it shouldn't be a big deal, except that you should keep it for resale.

Jul 22, 2017 | Marshall Music

2 Answers

Low volume on my marshall


I am very new here and don't know how to answer a question to a specific problem so I will write about the most common problems that I have had over the decades doing guitar amp repairs. If you find that your amp is extremely low in volume and then suddenly comes back to normal- check out the effects return [or power amp in] jack. Especially in Marshall amps-these corrode and your signal dies. If there is loud noise such as hissing and crackling with no guitar patch cord in the input jack- the input jack is likely at fault. They normally have switching contacts that ground part of the input circuit when the 1/4 inch male plug is disconnected. When this in is corroded or too weak to make normal contact, you can get these symptoms. If your amp is a solid state Marshall or Fender and there is a random buzzing sound with no guitar signal connected- hit the side of the amp and listen for the buzz to go away or become louder-if it does, this usually means that the connections are loose at the two large filter capacitors. In one or more Marshall amps, they use a filter circuit in the low voltage power supple for the preamp tubes. If you encounter a dead Marshall[the model escapes me now] remove the circuit board and resolder the four connections at the bottom of the bridge rectifier. If you have any other amplifier repair questions you can email me direct at computerlen@hotmail.com.

Nov 14, 2011 | Marshall Mg100dfx 100-Watt Combo Guitar...

1 Answer

I bought a Marshall as50d 2 months ago, it sounds great but my problem is that it shuts down after 10-15 minuets! Total disconnection as if u pulled the AC plug!! The red light on the power button turns...


This can be due to either a RUNAWAY of some power circuit or there is a dry point of soldering which seems to get aggravated when the board is working or heating.
So when the fault occurs check the power to the amplifier, the output stages. If a tap bring about life then the case of the dry soldering is justified.
If not this can be due to power failure due to semiconductor failure. A tracing with voltage/current/signal will be needed to confirm . USe a multimeter to check the voltage line , check the secondary to the circuits, specially the outputs.

Sep 02, 2011 | Marshall Amplification *new* Marshall...

1 Answer

Only just bought amp ,but twice now its just cut out,lost sound ,if i switch off wait a minute it ciomes back on cannot be normal surely? rgds neil


Not normal... however verify your guitar cable and guitar to avoid embarassment if the problem might be with those items. ALSO if you are driving this too hard, it probably has thermal shutdown and will shut down the power amp if the circuits get too hot... This is a smaller amp so If you are playing louder than *********** could stand it in a 15 foot square room, you are overdriving this unit and you best get a bigger one.

Aug 07, 2011 | Marshall Amplification *new* Marshall...

2 Answers

Its a marshal 8080 valvestate 80 v and it buzzes and some of the knobs crackle when turned,


Buzzing could be normal for this amp, especially if you have the gain cranked way up (or the volume way up) see if the buzz goes away when you turn the gain/volume down. If not, there is a problem that needs to be properly diagnosed by the amp tech at your local music store. The crackling is also unfortunately rather normal for an amp that's a little older. Oxidation builds up inside the knobs and makes that noise as you turn them. If it only happens when you change settings I wouldn't worry about it, but if it gets bad, a tech guy can clean it out for you.

Feb 20, 2011 | Marshall Mg100dfx 100-Watt Combo Guitar...

1 Answer

Marshall DSL 401 runs fine for about 10 minutes from cold then starts to crackle and sound disappears The amp is fairly new with not a lot of use


if this a tube amp then your tubes might be going bad. but if it is a solid state amp then im not to sure whats going on.

Mar 01, 2010 | Marshall Amplification Marshall MG250DFX...

2 Answers

Marshall MG50 DFX, the volume knob OD channel crackles


Either the control is damaged (happens if they get hit) or it is possible the circuit board it is mounted on has broken solder OR worse, a crack near the control. The unit will require servicing. Parts are readily available.

Jan 28, 2010 | Marshall Mg50dfx 50-Watt Combo Guitar...

Not finding what you are looking for?
Music Logo

Related Topics:

28 people viewed this question

Ask a Question

Usually answered in minutes!

Top Music Experts

Vito Vacirca Jr.

Level 2 Expert

140 Answers

yadayada
yadayada

Level 3 Expert

76109 Answers

kakima

Level 3 Expert

102366 Answers

Are you a Music Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...