Question about Music

Open Question

Fuse size in marshall valvestate vs100

Posted by Anonymous on

Ad

4 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
  • 5 Answers

SOURCE: marshall valvestate 8080 1. when i turn the buttons they make a cracking sound 2.when i play on it the sound becomes very quiet

As an electronics tech for 40 years I have spent half of those years reparing the damage done to electronic equipment by WD40. It is a great product when used in the correct situation. When it comes to cleaning controls in amplifiers etc the correct procedure is to apply a contact cleaner to flush out any dirt then apply a contact lubricant. WD40 contains minute graphite particles as well as corrosive chemicals. Between the two they swiftly render the controls to the bin.
WD40 great for unlocking rusty screws etc but never use it in electronic gear.

Posted on Jun 01, 2010

Ad
  • 17 Answers

SOURCE: its a marshal 8080 valvestate 80 v and it buzzes

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.

Posted on Mar 05, 2011

  • 1212 Answers

SOURCE: marshall valvestate 2000 avt no effects

If just no effects, look for a loose ribbon wire. Check footswitch and make sure the plug and jack are fully mated.

It is possible you have a defective 4558 IC, about the only way to locate the problem IC or transistor quickly is to "buzz test" the circuit. You may need to have an audio input of some sort pugged in as well to get the effects to respond. Expose the bottom of the chassis, and with a screwdriver begining at the output, work your way back through the stages/ICs until you lose the signal. Since you seem to indicate it is at the effects, begiin where they end.

Also make sure the solder connections are sound.

Pin 3 and pin 5 are the positive/noninverting inputs to the 4558 series of IC.

Posted on Jan 27, 2012

Testimonial: "thanks very much...chris"

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Marshall repair valvestate 8080


if it is C1 then it's the input capacitor from the instrument jack input, it's value is 10nF, as to it's type it could be 1 of three and I don't know without seeing it although all would work, from cheapest to most expensive, they are :- mylar, polyester or polyester film.

Good luck.

Aug 17, 2014 | Marshall Amplification Music

1 Answer

Marshall troubleshoot


First check the preamp valve in that curcuit

Feb 26, 2014 | Marshall Amplification Music

1 Answer

When I plug my P803 2 Way footswitch into my Haze40 amp the effects light flashes and the footswitch will not change channels or effects.


The P803 is designed to work with the "Valvestate" and Tube amps. I don't think it is compatible with the Haze40 since they have an optional 4 button footswitch so the optional one would necessitate different interface than the P803.

Jun 02, 2011 | Marshall Amplification Marshall P803 2-Way...

1 Answer

What is the fuse rating for a Marshall MG30dfx?


According to the schematic, the fuse for 120 volt is a 1 amp.

This is a reasonable size for this size amp.

May 13, 2010 | Marshall Music

1 Answer

My marshall valvestate 100 will completly cut out when im playing and the only way to make it come back is to turn it off and then on. it makes a really loud pop when i have 2 preform this task


It sounds like one of the filter capacitors is getting ready to fail in the power supply. Here is a link to some good info:http://www.geofex.com/ampdbug/ampdebug.htm Here is the schematic:http://www.ampix.org/displayimage.php?album=31&pos=112 Let me know if this helps.

Nov 30, 2009 | Music

1 Answer

Hi, I have a Marshall 8240. The Reverb output


probably the reverb tank These coils are very thin and tent to break easily

Nov 05, 2009 | Marshall Amplification Marshall MG250DFX...

4 Answers

Marshall valvestate 8080 1. when i turn the buttons they make a cracking sound 2.when i play on it the sound becomes very quiet


When turning the knobs you might get a crackling noise if the amp is old, The knobs get worn. Either you can replace them or repair them with a tiny squirt of WD40. Check youtube videos for help.

As for the fading sound, That would be your valves ... They need to be replaced ... I suggest taking it to a repair dhop for that because they need to be matched.

May 22, 2009 | Marshall Music

Not finding what you are looking for?
Music Logo

Related Topics:

60 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...