Hi All,
Well the Deco build is almost complete but have a hum and dont know if its dodgey soldering (I have de-soldered my last effort & resoldered) or do I need to shield it (single coil pick-up & piezo with blender pot.
Any tips on how to figure out which is the more likely - would be of assistance.
The hum is there as soon as I plug in and seems to be in the medium to higher frequences.
Tags:
I would shield the pup. Just for info, the first thing I always do with new basses is too remove the pick guard and add shielding.
I assume you have a ground going to the case of the pot?
Since you have what looks like a stacked pot, the volume part needs to be grounded to the case.
You might also want to ground the pot case to the jack , in fact , might wanna try that first.
AFKAM
I would shield the pup. Just for info, the first thing I always do with new basses is too remove the pick guard and add shielding.
I assume you have a ground going to the case of the pot?
Since you have what looks like a stacked pot, the volume part needs to be grounded to the case.
You might also want to ground the pot case to the jack , in fact , might wanna try that first.
AFKAM
Nah if you connect to the 'ring' or 'sleeve' part of the jack -- not the part that touches the tip end.
-WY
Penny Nelson said:
Grounding the pot to the jack wouldnt cause a ground loop?
Artist Formerly Known as Matt said:
I would shield the pup. Just for info, the first thing I always do with new basses is too remove the pick guard and add shielding.
I assume you have a ground going to the case of the pot?
Since you have what looks like a stacked pot, the volume part needs to be grounded to the case.
You might also want to ground the pot case to the jack , in fact , might wanna try that first.
AFKAM
A ground loop is created any time the signal can take multiple paths to the ground on the jack.
Typically you will attach all ground wires to the case of one of the pots, then run a wire from the case where all the grounds are to the ground on the jack. The ground can only have one route to take.
If you run multiple ground wires to multiple locations, you can inadvertently cause a ground loop, which could cause a hum.
Penny Nelson said:
Grounding the pot to the jack wouldnt cause a ground loop?
Artist Formerly Known as Matt said:
I would shield the pup. Just for info, the first thing I always do with new basses is too remove the pick guard and add shielding.
I assume you have a ground going to the case of the pot?
Since you have what looks like a stacked pot, the volume part needs to be grounded to the case.
You might also want to ground the pot case to the jack , in fact , might wanna try that first.
AFKAM
A ground loop is created any time the signal can take multiple paths to the ground on the jack.
Typically you will attach all ground wires to the case of one of the pots, then run a wire from the case where all the grounds are to the ground on the jack. The ground can only have one route to take.
If you run multiple ground wires to multiple locations, you can inadvertently cause a ground loop, which could cause a hum.
Penny Nelson said:Grounding the pot to the jack wouldnt cause a ground loop?
Artist Formerly Known as Matt said:
I would shield the pup. Just for info, the first thing I always do with new basses is too remove the pick guard and add shielding.
I assume you have a ground going to the case of the pot?
Since you have what looks like a stacked pot, the volume part needs to be grounded to the case.
You might also want to ground the pot case to the jack , in fact , might wanna try that first.
AFKAM
okay! Thanks for all your help seems like its sorted now. Solution shielded both pick up and pot separately. ran earth wire from shielding to back of pot ran earth wire to jack.
Thanks again everyone - now I can move on to the next error in judgement acoustic bridge with no tailpiece for strings - box bowed and strings to high at 12 fret so am going to get a hinge or something for tail piece to take teh stress of the soundboard and reinforce the base of the box....tomorrow night after work...lol
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