Harmony Database - Home Home | << back
Non-official resource for all Harmony guitars fans

models 1211 models - images 17620 images

H1
H1141
H1203
H1213
H1214
H1215
H1260
H1265
H1266
H1310
H1311
H1325
H1327
H14
H1407
H1414
H1415
H1456
H1457
H15
H15V
H162
H165
H16B
H16R
H16W
H17
H173
H174
H19
H22
H22/1
H27
H37
H38
H39
H41
H42
H44
H45
H46
H47
H48
H49
H50
H51
H53
H53/1
H54
H54/1
H55
H56
H56/1
H57
H58
H59
H59/1
H60
H62
H63
H64
H65
H66
H68
H7
H70
H71
H72
H73
H74
H75
H76
H77
H78
H79
H802
H81
H82
H82G
H88
H929
H945
H950
H954
H956

Beware ! You're in Kamikazie here. Not many pro luthiers around, more often brave souls experimenting in their kitchen.

Golden Tone and "Hershey bar" pickups re-born - by François

For those of you who never had a look inside a pickup, I remind that the gauge used for the wire is very, very thin, really like a hair... You can't have a drink before working there... But you can attempt this before rewinding if you have a dead pickup.

Golden Tone "Indox"

I recently had a very nice experience in giving a second life to a "golden tone" pickup (from a H66 Vibrajet). After some testing, I suspected that the ground side of the coil had a bad electrical contact with the metalic base plate. In the Golden pickup, the tiny wire is soldered directly on the plate, see the photo. I just had to gently touch the old solder with the soldering iron, and voila, the pickup had its nominal resistance (12k if I remember), and the guitar was rockin some minutes later...
I wonder how many of these pickups in our guitars are weak and just need the gentle iron touch... to go back to strong and gold tone !


"Hershey bar"

I had a "Hershey bar" bridge pickup from a Silvertone that was very weak in output and sound, compared to its neighbour from the neck. After removing the pickguard and unsoldering, I measured the pu's : some 3.5k ohms for the neck, and some "variable" 40k or nothing for the bridge (I read here on this forum that 3.5k is the normal resistance for these kind of pu's).

After dismantling the Hershey from the Silvertone, it was a different story from the Golden tone above : no visible soldering of the inner side of the coil... The more I was opening the pickup, the less resistance I had, to a completely open coil at the end... I was scrutering the thing and touching everywhere to locate anything, and at a point I had a low resistance again ! I understood the problem was (again) the inner end of the coil, having a bad ground connection. But how to repare the connection *inside* without un-wounding the coil ?
I made a choice : to cut one of the very inner coil, and routing it directly to the ground connection of the outer wires, on the base plate... This way, I loose some of the inner turns, but very few of them I believe, by choosing a turn very close to the magnet. Check the photos below.

The coil is wounded counter-clockwise (like the red schematic), because of the outer end connection. So I choosed the place where to cut the wire, to have enough length to route it to the soldering point.
I had first to remove the enamel from the wire, to be able to solder it. Hence the sanding paper... It's a 600 grade water sanding paper. First photo shows where I cut and sand the wire (red arrow shows where I sand and put some solder before cutting). Second photo shows how I carefully routed the wire to ground (parallel to the red line).

And you guess what... 3.5k ohms and a strong sound like new :)

The brown stuff on top is some adhesive residue from the mylar foil carefully removed, (and later replaced with similar material, cut from a sleeve in a photo album.. old adhesive was enough to maintain it in place..)


august 2005

back to Kamikazie Lutherie Index


FAQ | Contact | Links | My Harmonies | About this site

For your mobile : scan me !
scan this qrcode with your smartphone Locations of visitors to this page
Bookmark to: MySpace Bookmark to: Digg Bookmark to: Del.icio.us Bookmark to: Facebook Bookmark to: Twitter Bookmark to: Reddit Bookmark to: StumbleUpon Bookmark to: Yahoo Bookmark to: Google Information
Do you like this site ? Please click below, help me to pay bandwith and documents !
©2018 - Harmony Database