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Help! Boss DM-2 has stopped feeding back
Posted: Wed Aug 17, 2011 3:40 am
by D-Rainger
The wild analogue delay feedback you get with the 'intensity' knob up high has stopped happening... The repeats just die away
Any ideas why this is? I've put a new battery in it, but no joy.
It's quite old - do these pedals just get knackered? (It's by Boss; shouldn't they just go on forever??)
Re: Help! Boss DM-2 has stopped feeding back
Posted: Wed Aug 17, 2011 4:07 am
by mysteriousj
So you mean it's just not self oscillating? If the delay is working but your just not self oscillating, my first thought would be something wrong with the intensity pot.
Re: Help! Boss DM-2 has stopped feeding back
Posted: Wed Aug 17, 2011 2:20 pm
by devnulljp
...or a cap has drifted in value -- the later DM-2s had some slightly different component values so don't oscillate.
Don't Boss do the $50 flat fee for repairs?
**Don't screw with the trimpots inside -- that won't make it oscillate, but it will fuck up the pedal.**
Re: Help! Boss DM-2 has stopped feeding back
Posted: Thu Aug 18, 2011 2:12 am
by theavondon
Tried a power adapter yet?
Re: Help! Boss DM-2 has stopped feeding back
Posted: Thu Aug 18, 2011 3:04 am
by devnulljp
theavondon wrote:Tried a power adapter yet?
Good point -- should be 12V ASA adapter (or 9V daisy chained with something else).
Re: Help! Boss DM-2 has stopped feeding back
Posted: Thu Aug 18, 2011 8:08 am
by D-Rainger
I've tried with my Boss 9v adaptor - still no oscillations.
(A '12V ASA adaptor'? Why 12V?)
Good tip re the trimpots!
I seem to remember this problem happening before... and then fixing itself... Intermittent faults
Re: Help! Boss DM-2 has stopped feeding back
Posted: Thu Aug 18, 2011 11:59 am
by eatyourguitar
D-Rainger wrote:I've tried with my Boss 9v adaptor - still no oscillations.
(A '12V ASA adaptor'? Why 12V?)
Good tip re the trimpots!
I seem to remember this problem happening before... and then fixing itself... Intermittent faults
there is an article on the web explaining that your pedal needs the 12v asa or 9v with two boss pedals. there is something in the other pedal that makes your vintage boss pedal happy. when you daisy chain, you are basically adding stuff on the power rails of the vintage pedal to make it work. I dont have a link or remember the details sorry.