Effect Loop Problem

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Mike
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Effect Loop Problem

Post by Mike » Tue Jun 11, 2013 4:17 pm

Just wanted to see if anyone else has experienced this.

When ever I put a pedal through the effects loop through my MK50 and horrible hum appears. Ive tried with different leads etc but still the hum happens. anyone have any idea what could be causing it?

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s&m freddy
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Re: Effect Loop Problem

Post by s&m freddy » Tue Jun 11, 2013 6:29 pm

It might be a pre-amp tube problem. V2 is effects send and V3 is the return. Try re-seating these and if no better swap them 1 at a time for another tube?
Cornford RK100 #108 used on Winery Dogs UK dates 2016 by Richie Kotzen
Cornford 2x12 cab
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Mike
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Re: Effect Loop Problem

Post by Mike » Wed Jun 12, 2013 12:08 am

s&m freddy wrote:It might be a pre-amp tube problem. V2 is effects send and V3 is the return. Try re-seating these and if no better swap them 1 at a time for another tube?
Thanks for your reply, when you say re-seating, does that mean make sure there in properly? sorry im a bit ignorant when it comes to amp technology.

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s&m freddy
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Re: Effect Loop Problem

Post by s&m freddy » Wed Jun 12, 2013 5:01 pm

Sorry...yes.....pulling them out and pushing them back in firmly can ensure they are contacting nicely...
Cornford RK100 #108 used on Winery Dogs UK dates 2016 by Richie Kotzen
Cornford 2x12 cab
Cornford Hurricane #1895

SabbadiusUSA
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Re: Effect Loop Problem

Post by SabbadiusUSA » Sat Jun 15, 2013 6:21 am

Are you sure the patch cables good?

kell
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Re: Effect Loop Problem

Post by kell » Sat Jun 15, 2013 10:45 am

Hi,

is there also a hum with nothing plugged into the loop?

If not, you have a grounding issue with your external effect power supply. This one and the amp's power supply together create a classic ground loop.
Try using the effect only with battery – hum should disappear. If true, buy a good power supply with isolating transformer. :idea: That's it. :biggrin:

Cheers,
Kell

Mike
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Re: Effect Loop Problem

Post by Mike » Sun Jun 16, 2013 11:41 pm

kell wrote:Hi,

is there also a hum with nothing plugged into the loop?

If not, you have a grounding issue with your external effect power supply. This one and the amp's power supply together create a classic ground loop.
Try using the effect only with battery – hum should disappear. If true, buy a good power supply with isolating transformer. :idea: That's it. :biggrin:

Cheers,
Kell
Thanks Keli, Yes I believe your right, was speaking to a guy earlier today. Im using The Dunlop Brick which I hear isnt a great one to use so I think investing in a voodoo labs power supply is the way to go. they seem to be the ones everyone uses.

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Re: Effect Loop Problem

Post by isma » Tue Jun 18, 2013 7:43 am


SabbadiusUSA
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Re: Effect Loop Problem

Post by SabbadiusUSA » Tue Jun 18, 2013 5:50 pm

Been using the Voodoo for 3 years, and have never had an issue. :thumbup:

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