Mxr M87 Bass compressor makes no sound

[flacoclef]

I connected my bass to a Sadowsky Outboard preamp then to the Mxr M87 and it stopped working. It made a noise like a dead battery, although it was connected to a 1spot, then no more sound came from it. All the lights turn on. And no sound.

 

[bongomania]

Have you tried powering it with a battery instead, or a different power supply?

 

[eriky4003]

When you hook up the M87 to power, the M87's meters should peak and then come down. Hit the footswitch and see if the blue led lights up. If not, your adapter may not be working or it isn't connecting properly (I've had that issue using a boss adapter).
Re-reading your question and maybe it's your cables. Try going from preamp to your amp and ensure it's fine, remove the connection to your preamp and put it into your compressor. If no signal, it is your compressor giving you some grief. As bongo said, try a battery. If you have a signal, it may be your cable going from the preamp to your compressor.

 

[flacoclef]

Thanks guys. I connected it directly to the compressor and nothing. Also, when it turns on, all the lights go ip as usual. I stomp on it and the blue light goes on but mo sound. I play on bypass and it sounds perfectly.

 

[mmbongo]

Sounds like cabling. Try it by itself, no other pedals in the chain.

 

[flacoclef]

Okay. Bass to pedal, pedal to amp. On bypass it sounds normally, could it be cabling?

 

[bongomania]

Did you try a different power supply yet?

It could be the cables somehow, but that seems unlikely.

 

[flacoclef]

I'll check with a battery today.

 

[flacoclef]

Same thing with the battery. It's going back!

 

[avvie]

If it works fine when turned off its not the cables. Sometimes defects happen. Trade it in for another.

 

[Doner Designs]

After a couple years of very light use at home, mine has died with the same issue as described above. Bypass is ok, lights come on with or without batteries but no sound. Completely dead (in terms of sound) when engaged. This is probably the first electronic device failure I have seen in decades.

 

[PBrown]

After a couple years of very light use at home, mine has died with the same issue as described above. Bypass is ok, lights come on with or without batteries but no sound. Completely dead (in terms of sound) when engaged. This is probably the first electronic device failure I have seen in decades.

Mine just did the same thing last week--I am bummed, to say the least. Pretty expensive pedal to have go out like that. Also, very light use.

 

[rufus.K]

Mine is a battery eater, but has alway's worked wonderfully

 

[Doner Designs]

Mine just did the same thing last week--I am bummed, to say the least. Pretty expensive pedal to have go out like that. Also, very light use.

Contact MXR. They may repair it for free depending on age and condition, even if it's technically out of warranty.

 

[PBrown]

Contact MXR. They may repair it for free depending on age and condition, even if it's technically out of warranty.

Thanks! I'm hoping they will. I emailed them and included this thread. I'll post if I hear anything.
P

 

[JODowd]

Thanks! I'm hoping they will. I emailed them and included this thread. I'll post if I hear anything.
P

Hey, same thing happened to mine 6 months past warranty! Lightly used. Looks brand new. Dead as a door-nail. Did you ever try to contact Dunlop? Did they make it right? Just wondering before I waste any more time.

Thanks.

 

[Fuzzbass]

I've seen a number of similar reports, and all prove that the Ovni Labs caveat about the M87 is valid:

First, be aware that there have been some complaints already about defective M87s on the market. The one I have in my hands has no unusual hiss, but I've seen posts from several people saying they bought one that hisses badly at all settings. Other complaints include the effect failing to engage, or responding only to extreme input levels, or having low output. Again, the one I have has NONE of these problems. And I don't know how many of those issues are due to user error. But it is only fair for me to alert you that a few faulty M87s may be out there, so if you buy one that seems to not be working as it should, your best bet may be to exchange it right away for a new one.

MXR M87 Bass Compressor and M76 Studio

As also noted the M87 has its good points, and there are many satisfied users.

 

[franvarin]

I connected my bass to a Sadowsky Outboard preamp then to the Mxr M87 and it stopped working. It made a noise like a dead battery, although it was connected to a 1spot, then no more sound came from it. All the lights turn on. And no sound.

I had what sounds like the same problem. I was able to get a signal and use all of the knobs except the output. It happened suddenly and did make a noise then just had no output. I called MXR and they had me send it for repair. They ended up replacing the gutts of the pedal and sending it back. I was pleased to see they stand behind their products!

 

[acleex38]

I had what sounds like the same problem. I was able to get a signal and use all of the knobs except the output. It happened suddenly and did make a noise then just had no output. I called MXR and they had me send it for repair. They ended up replacing the gutts of the pedal and sending it back. I was pleased to see they stand behind their products!

I also had that problem and they also fixed it for me after I was out of warranty - it was also "replace the guts" repair for me.

Fantastic pedal, but I stopped trusting it.

 

[franvarin]

I also had that problem and they also fixed it for me after I was out of warranty - it was also "replace the guts" repair for me.

Fantastic pedal, but I stopped trusting it.

I still use mine, great pedal. But, I can understand why you would be apprehensive about it. They're too expensive to keep a spare just laying around in case you happen to need it.

I've considered it ot be a freak thing but, if it happens again I'll likely be in the market for something comparable to replace it.