Members snaresmacker Posted February 22, 2008 Members Share Posted February 22, 2008 Hey, Just got a used Line 6 DL-4 w/ power supply. When engaged (using any bank) it emits an incredibly loud humming sound, rendering it useless. Is this a common problem that is easily fixable? I know these things are a bit notorious, so hopefully someone can tell to do A, B, and C to fix it. Much thanks! --Jesse Link to comment Share on other sites More sharing options...
Members Saturnine10 Posted February 22, 2008 Members Share Posted February 22, 2008 Could be the power supply.. Link to comment Share on other sites More sharing options...
Members snaresmacker Posted February 22, 2008 Author Members Share Posted February 22, 2008 Thanks; I'll give another power supply a try tonight. Any more thoughts? Much thanks!! Link to comment Share on other sites More sharing options...
Members sense_of_henry Posted February 22, 2008 Members Share Posted February 22, 2008 Maybe you have a power supply without enough mA? Link to comment Share on other sites More sharing options...
Members snaresmacker Posted February 22, 2008 Author Members Share Posted February 22, 2008 It's the Line 6 power supply, made specifically for this unit. I'll try my Boss PSA adaptor tonight. Link to comment Share on other sites More sharing options...
Members MakuseruSukotto Posted February 22, 2008 Members Share Posted February 22, 2008 pop some C's in it and see if it still does it Link to comment Share on other sites More sharing options...
Members andreas Posted February 22, 2008 Members Share Posted February 22, 2008 Don't try the PSA - it won't fit in the jack (but the difference isn't big enough to be overly obvious, which can lead you to damage the jack trying). Also, the polarity is wrong for operating the DL-4 on DC voltage (granted, it shouldn't matter on a unit designed for AC voltages, but at least that's what they say). I'd follow the advice above, and try battery power. If it still hums, it's definitely not a power issue. If it goes quiet, try a different Line 6 power supply. If that doesn't help, the problem is in the pedal's AC-to-DC converter section. /Andreas Link to comment Share on other sites More sharing options...
Members snaresmacker Posted February 23, 2008 Author Members Share Posted February 23, 2008 I'll try the batteries. Much thanks! Jesse Link to comment Share on other sites More sharing options...
Members cantoXIII Posted February 23, 2008 Members Share Posted February 23, 2008 i found mine had quite a hum even when it was off one day. i engaged the alternate bypass mode [with trails on] and it seemed to kill the noise. not sure if you're experiencing the same thing, but it's worth a shot. Link to comment Share on other sites More sharing options...
Members snaresmacker Posted February 23, 2008 Author Members Share Posted February 23, 2008 Tried that... In true bypass mode, it hums when engaged. in alternate mode, it hums constantly. Link to comment Share on other sites More sharing options...
Members cantoXIII Posted February 23, 2008 Members Share Posted February 23, 2008 definitely sounds like a power issue, then. the dl4's are quite the picky bitch when it comes to feeding them. i use a one-spot on one dl4 in conjunction with a slew of other pedals, and it creates a whiny type of feedback on certain settings. the dl4 using the line 6 power supply sounds clear and is fine. i know it sounds unreasonable, but try another line 6 power adapter if possible. it will at least place the blame on the unit itself if the hum occurs, but the power supply you bought used simply could have run its course. Link to comment Share on other sites More sharing options...
Members snaresmacker Posted February 27, 2008 Author Members Share Posted February 27, 2008 I tried it with batteries, and the results were exactly the same. So that should eliminate the power supply as a culprite, right? If anyone has any ideas for DYI fixes, troubleshooting procedures, please let me know. The guy who sold it to me on eBay isn't responding to my emails... errr. --Jesse Link to comment Share on other sites More sharing options...
Members starsailor803 Posted February 27, 2008 Members Share Posted February 27, 2008 Sounds like you got swindled. That sucks. Link to comment Share on other sites More sharing options...
Members snaresmacker Posted February 27, 2008 Author Members Share Posted February 27, 2008 ..and it's the second one I bought on eBay that was described as being perfect working order, only to not work. The first time, the seller was cool and refunded me. I hope this guy does the same. Link to comment Share on other sites More sharing options...
Members shirokuma Posted February 27, 2008 Members Share Posted February 27, 2008 damn, that sucks dude. I would stick to your local CL, they usually pop up every week or so in my area. then you'd be able to check it out first. Sorry bout the troubles mate, good luck. Link to comment Share on other sites More sharing options...
Members starsailor803 Posted February 27, 2008 Members Share Posted February 27, 2008 Wow, two in a row. Maybe consider something besides a DL-4. Link to comment Share on other sites More sharing options...
Members snaresmacker Posted February 27, 2008 Author Members Share Posted February 27, 2008 Yeah no kidding. I was drawn to it's significantly more features than the DD-20. Another one bites the dust. Link to comment Share on other sites More sharing options...
Members snaresmacker Posted March 2, 2008 Author Members Share Posted March 2, 2008 I've officially given up on returning it; the seller won't resond. SO... one last bump. Can anyone offer suggestions other than the power supply theory? Mucho Thanks, jesse Link to comment Share on other sites More sharing options...
Members Saturnine10 Posted March 2, 2008 Members Share Posted March 2, 2008 Did you try the batteries? Link to comment Share on other sites More sharing options...
Members andreas Posted March 2, 2008 Members Share Posted March 2, 2008 I tried it with batteries, and the results were exactly the same. So that should eliminate the power supply as a culprite, right?Yup - if it does the same thing on battery power (which is as clean as it can be), it's definitely something internal. I assume you've already tried it in various situations (guitar->DL4->amp, different guitars, different rooms etc)? If the problem persists and stays constant, you can be sure it's a problem within the DL4 itself. The fact that in true bypass mode the hum was only there when the pedal was active, while it got constant when switching to the alternate bypass mode, is another pointer in that direction. If you're stuck with the unit (due to the seller not responding), your best course of action is probably to talk to Line 6 about it and see if you can get a quote. /Andreas Link to comment Share on other sites More sharing options...
Members gambit Posted March 2, 2008 Members Share Posted March 2, 2008 there's the reset thing i've read about on here.. might be worth a search of the threads, where you basically remove the chip from the circuit board and plug it back in again for a complete reset when things go bad.. read up more about it before diving in though! Link to comment Share on other sites More sharing options...
Members Coma Larkin Posted March 3, 2008 Members Share Posted March 3, 2008 Man, I hear ALL kinds of stuff about bad DL4's these days. Anyone have any idea whether it's primarily the newer units? I've had one that I bought used a few years back and it's given me zero problems thus far. Maybe I should sell it--not using it much these days. Link to comment Share on other sites More sharing options...
Members deovinde11 Posted March 3, 2008 Members Share Posted March 3, 2008 Yeah I have an older one(without the colored "line6" label) and it works great, one time on of the banks stopped working for a day, but was magically fixed the next day Link to comment Share on other sites More sharing options...
Members MathiasWilliam Posted March 3, 2008 Members Share Posted March 3, 2008 Yeah I have an older one(without the colored "line6" label) and it works great, one time on of the banks stopped working for a day, but was magically fixed the next day yeah im confused, i have heard people say the older units are the ones that break but then i also hear its the newer ones. I have a newer one (plastic line 6 logo), i will probabaly cry if it breaks.Time for a backup, they need a line 6 LO-4 which is just looping. Link to comment Share on other sites More sharing options...
Members echodeluxe Posted March 3, 2008 Members Share Posted March 3, 2008 i might buy a dl4 cuz i found one for cheap with the power supply. i used to have one but i never really used it. hmmm Link to comment Share on other sites More sharing options...
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