Question about Boss Mt 2 Metal Zone Effects Pedal

3 Answers

The Distortion Pedal has no effect on the sound.

I am using a MT-2 BOSS Metal Zone distortion pedal. The power indicator light shows that the pedal is getting power and working fine. I use an AC adaptor instead of a 9V battery so the power is always fine. One day it just stopped working. The indicator light still shines bright, but the pedal does no more that cause a compressed wisper sound that is at a very low volume. I have been playing guitars for years and I know I am hooking it up correctly. I've taken it out of my pedal chain to try it by itself and It still doesn't work. What could be wrong?

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  • leeman86 Dec 29, 2008

    I have the same problem and again before anyone jumps on us it is all correctly plugged in and the volume is turned up.



    Mine was working i moved it slightly to the left so i could reach it better and boom .... just get a clean sound regardless if it is on or off, led works fine, it seems to be passing sound through it just not distorting no matter how much i twist the knobs



    booo waste of a hundred quid

  • tdwp Mar 24, 2009

    i have the same problem where did u get the ic's

  • Anonymous Mar 28, 2014

    As above, unit will only work with batteries.

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For me i had the same problem adn it wasone of my instrument cables gone bad =( changed the cable and it worked perfectly hope it helps

Posted on Aug 02, 2009

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No dude, its the caps. check c36 and c38. probably not passing voltage thru to the pots. there may be more caps with an open/short. how else do you think boss made the price on these go down? low quality hardware.
if you can just do a keely mod , as you would replace all the caps for it. there on your pedal also has more than two bad caps /resistors. it will usually be several ( chain reaction).

Posted on Jul 19, 2009

  • namm Jan 30, 2011

    Hi, this problem has just happened to my boss metal zone pedal also. I read your comment, and honestly, I've got no idea about this stuff (modifying pedals etc). Would you be able to explain the solution a bit more in detail?
    Thanks, hope to hear from you soon.
    Any advice would be great. My email's - namm@live.com.au

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I got d same problm. i fixed it myself.. check all the op amp ic's if they're all gud. if youre not sure, replace all 4 rc4558 ic's. in my case, i still felt a very small output signal from my pedal (equalizers, vol n gain ctrls r gud since they vary when i change the setting) so i suspected that one or 2 of my ic's were damaged. i only replace d last two op amps which my signal passes thru. i also had this problm with my marshall drive master. same diagnosis and solution. check your schematics

Posted on Feb 13, 2009

  • Leander Sandmeier May 06, 2013

    Hello, can you help me? i dont know what is ics and those strange things :\ lol i have the same problem but i dont understand about electronics...

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1 Answer

It works fine for about a few minutes and then the light is slowly getting pale and the sound slowly looses power until it doesn't give any sound at all. Tried a few different batteries, same thing.


Battery is not the problem.
It could be transistors, IC, elco etc. It must be checked.
This electronic parts, could be almost breakdown. At the beginning of the device is turned on, it work fine, but after a while it became hot, then the value is changed, then the circuit was not working.
Can also occur on the DC input, the diode and the elco (D006,C019,C40,C41). View image.

23095950-2ss5ycyvkoajtv035dpuezke-1-0.jpg See the full diagram here :
Boss MT 2 Metal Zone distortion pedal schematic
.

Jan 24, 2014 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

Hello. I have a Boss MT-2 distortion pedal. It will not power up with the adapter or battery. Wondering what could be wrong. Any suggestions on what to look for? Thank you!


The battery is connected via plugging in the input guitar cable ( a seperate contact is made at the jack). Sometimes this can be broken. Usually this failure is caused by someone stepping on or yanking a cable and the solder is broken at the jack/board attachment. This can be the input jack OR the power jack. Occasionally the circuit board or the traces on it are cracked, requiring jumpers to be installed on the board. In any case, open the pedal and look for these problems.

Aug 15, 2011 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

My boss metal zone pedal power light wont come on when i hook the ac adapter to it i get nothing but a hum and no output clean or distortion,then when i plug a 9volt battery in it gives only clean tone...


There is a switch contact that connects the battery when you unplug the AC adapter. These commonly get sprung and cease to make contact leaving the battery disconnected when adapter is unplugged, resulting in no power. Verify the battery is being connected and see if the unit works properly. If so the adapter is either the wrong one or defective.
In other words, there may be two problems.

Jan 30, 2011 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

When i turn on my pedal i can get the clean tone but when i switch the distortion i cannot get the distorted sound...what should i do?


Make sure the pedal has the correct power supply voltage, current AND polarity.

Also adjust the setting knobs as needed.

Make sure the in's and out's are corectely connected... it will work clean if they are backward, but no distortion.

Mar 11, 2010 | Boss Mt 2 Metal Zone Effects Pedal

2 Answers

How to set up foot switch in order


Personally I recommend the following set up:

Distortion>Effects>Compression/Noisegates/Sustain

This will ensure that the signal won't have any odd hiccups due to an odd pedal setup. But if you play around with different orders, you can end up with some very interested sounds.

Nov 24, 2009 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

Constant hum/buzz only when the distortion is turned up. Otherwise works fine. Already checked cables. Please help.


Distortion is a very HIGH gain operation and any hum on the input will be amplified many times.

Check your guitar AND input cable for ANY hum at all at high gain settings on the amp WITHOUT the pedal in line to assure that the source is not before the pedal.

ADDITIONAL cause could be a poor power adapter for the pedal or even a bad filter cap in the pedal.

Nov 02, 2009 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

There is a constant loud hum/buzz whenever I turn the pedal on. With my Boss Mt 2 Metal Zone effects pedal. It happens whether or not the power supply is plugged in. Ive tried switching cables and...


First and foremost , check your signal chain. By that, i mean put the pedal aside, ...just unhook it and take it out of your signal path. Using the same cables , guitar , amp, other pedals - borrow a friends MT-2 if you can get one , and try THAT to see if THAT works , OR any other kind of distortion pedal. If another one works ok , it's YOUR MT-2. Boss pedals are pretty rugged , but sometimes the little actuator (on/off switch) underneath the treadle (where you push your foot down) will become faulty. That's a high-gain pedal - are you using a basic Strat or other single-coil pickup guitar? If so , are you playing close to any flourescent lights? SIngle coils are noisy around those lights. Will cause a hum / buzz if using a heavy dist. pedal. You can check that by moving around as you play.

Nov 02, 2009 | Boss Mt 2 Metal Zone Effects Pedal

1 Answer

I have never had a problem with my distortion pedal it worked just fine then i dint use it for about a month and now when i plug it in and push the pedal it wont work.


If you are using battery power, the answer is to try a new battery.

If you have an adapter for power, make SURE you are using the right one.

Make sure the in and out cables are connected correctely.

A subtle problem can be a bad power inut plug.

Oct 18, 2009 | Boss Mt 2 Metal Zone Effects Pedal

2 Answers

Light indicator is on


Try changing the battery, if it doesn't help, some possibilities are:

- dirty contacts or a broken wire on the footswitch

- a broken wire from the distortion output to the output plug

- a broken wire elsewhere in the unit (e.g. potentiometers or rotary controllers)

- a bad input / output level or other potentiometer or rotary controller

- a burnt out component (a bit unlikely, but possible, and it could be anything)

- a bad connector contact inside the unit

- a bad pin solder contact on ANY of the components inside the unit (wires, connectors, switches, jack plugs, resistors,variable resistors, trimmers, diodes, capacitors, transistors, ICs, etc.)

Broken wires / badly soldered pins need to be resoldered, but if there is damage to any of the components, they wil probably need to be replaced.

I hope you can find out what it is.

regards

3rq8 (Triarcuate)

Jul 26, 2009 | Boss Mt 2 Metal Zone Effects Pedal

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