Question about Boss ME-70 Guitar Multiple Effects Pedal

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I used my Me70 yesterday evening,tried it this afternoon,and there was no sound,all the lights came on,tested the lead,the earphones,the guitar,on another amp,and all was fine,the foot pedal was on sound,all the gain knobs were full up.can any body help please.

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Posted on Jan 02, 2017

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SOURCE: The Distortion Pedal has no effect on the sound.

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

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SOURCE: Metal Pedal mutes my guitar.

Sell the pedal and get a digitech, or convert it into a looper pedal.

Posted on Apr 15, 2009

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SOURCE: i actually use boss ml

The first thing I would do would try a 9V AC Adapter to rule out a battery issue completely. But if you have changed the battery already, this shouldn't be the issue. Does the red light come on at all? The next thing I would check involves removing the back cover of the pedal and making sure the input/output jacks are okay. Do you see any hanging wires, loose solder, or smell a burnt smell? If you have only had this pedal for a few months, you may be able to send it back to BOSS for replacement under your warranty.

Posted on Mar 04, 2011

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1 Answer

No sound when connect guitar


have you checked the speaker leads in the back to make sure they are hooked up> if so, you have power to amp? Volume knob turned up? is guitar cord good? (try it in a different amp , or check w/ an ohm meter) . Does the guiter have active pick-ups? If so, is battery good? and last, is the volume knob on guitar up" try all that and get back to me

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Contact boss


BOSS ME70 Factory Reset.
Just do this:
f4b4a657-f59d-4b83-b094-bde2b89e4435.jpg

Jun 11, 2014 | Boss ME-70 Guitar Multiple Effects Pedal

1 Answer

My ME 70 is auto skipping. Example, from one effect to another without me touching any button. an electrician said it just need cleaning, but even after he cleaned it, it still has the same problem. please...


"Auto skipping. Example, from one effect to another".
Is it always so, or only sometimes?
What type of effect? Is it happen at the all Type of parameter? It can be observed from the changes sound is heard.
Yes "it just need cleaning", but, which parts are cleaned,and how he did? Is it potentiometer?
And if he simply cleaned by spraying contact cleaner, this is not effective at all, because it does not touch at all the inside of the pot.
Potentiometer need to be replaced, but if it is difficult to find, open the back lid of potensio. Fix the inside (you have to understand the potentiometer structure inside).
ME70 pots are look like this :
20031380-2ss5ycyvkoajtv035dpuezke-3-0.jpg

Sep 12, 2013 | Boss ME-70 Guitar Multiple Effects Pedal

1 Answer

What does bt mean on my ME70


we had the same thing happen and discovered it was low batteries

Feb 02, 2013 | Boss ME-70 Guitar Multiple Effects Pedal

2 Answers

How do I factory reset a BOSS ME-70 effects pedal


press pedals 3 & 4 at the same time to swtich to Manual Mode. Hold down EDIT/EXIT and press the MOD pedal. Press WRITE twice.

Good luck!

Sep 04, 2011 | Boss ME-70 Guitar Multiple Effects Pedal

1 Answer

Hi, when using the gain control on my amp I get a buzz and an 'osilating' sound. I've tried several guitars and leads but still the same problem, any suggestions?


Hi.

If the amp is working, then most of the time the buzz is given by a bad grounding. Test the amp using different wall sockets, and possibly test it in a different home (there may be an earthing problem with the home network). If the problem goes away, then it was the wall socket or the home power network. If the buzzing is still there the problem is with the amp. Check the earth connection at power cord and psu and test the amplifier's PSU components. Check also the audio connections inside the amp (the back of the female jack input sockets). A small contact in there will result in a loud buzz.

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I have a Roland AC-90. During a gig last Sunday I had my Taylor acoustic guitar and a Shure mic cutting out. There would be a break in sound - both guitar and voice would go - and then it would all come...


I would expect there is bad soldering or a circuit board crack. Inspect the soldering aound the leads, especially pots and heavy components. Finding all the retaining screws can be frustrating. Expect the screws for the handle to also attach to the amp chasis. They are often hiodden under plastic caps.

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Hi, I have a guild guitar with d-tar pickups. When I plug in a lead (any lead) the batteries overheat massively. (I'm talking about too hot to handle) I don't play this guitar much through amps, but...


Plugging in the guitar cable closes the battery circuit in the guitar. The circuitry in there has a short that when the battery is connected draws massive battery current. The circuitry needs to be troubleshot to find the short. You can troubleshoot this wit just a multimeter. Of course if you have a warranty, exercise it. The short could be most anyplace and since unit is new, it may even be a wiring error. A visula inspection may uncover a solder bridge or a pinched wire. Forst investigate warranty.

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1 Answer

Buzzing noise when not playing


All amplifiers make a little bit of noise (hiss) but it is normally slight and drowned out by playing. However, assuming that this is not normal system hiss, here are a few simple steps to try and locate the source of the problem by process of elimination.
  1. SAFETY FIRST - a common cause of a humming or buzzing sound can be a lack of earth (grounding) on the mains supply. With a 240volt AC supply this hum will be at 50hz (in the UK) - frequency may vary in other countries but should be similar. Check the earth first because of risk of electric shock. Until you are satisfied that this is not the cause of the problem DO NOT touch any metal parts of the amp. Remove the mains lead and try a different one. Try plugging the amp into a different mains outlet socket (preferably one on a completely different circuit).
  2. Turn off other electrical equipment in the vicinity that may be causing interference. Move the amp a bit, try rotating it by 90 degrees to change relationship to things like mains electric cables in the floor.
  3. If you are using the line-out socket to give a feed to a mixer, slave amp or p.a. system unplug this. Sometimes double earthing (through the mains lead of your amp AND the mains lead of the MIXER / PA) will cause an 'earth loop' due to a different resistance at each end. Putting a DI box with an 'earth lift' in between may eliminate this problem. Alternatively there are little gadgets you can buy to do this (I found one intended for car audio systems on Amazon that works very well)
  4. Unplug any instrument leads - to eliminate possibilities of interference affecting cables, effects pedals or guitar pick-ups. Also unplug the foot-switch.
  5. If that stops it plug a lead in without a guitar on the other end - does the noise return? If yes change the lead. If no plug the guitar in.
  6. Try moving the guitar in relation to the amp (turn it around 90 or 180 degrees) - this will be pick-up to amp power supply interference.
  7. Does the sound get better or worse if you touch metal parts of the guitar with your hand? This may be a screening issue within the lead or the guitar itself.
  8. Try turning all the individual channel tone and gain controls to zero, turn off any effects on the amp panel. If that eliminates it only turn up the controls on channels that you are actually using.

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