Mercury Epiphone Valve Junior - Component Identification Guide

8 Epiphone Valve Jr.•Mercury Upgrade Kit
ThisprojectanditsdocumentationistheresultoftechnicalinvestigationsmadebytheengineeringstaffofMercury Magnetics.Thedisclosureoftheinformationhereinmaypertaintoproprietaryrightsand
thefurnishingofthesedocumentsdoesnotconstituteanexpresedorimpliedlicensetousesuchmaterials.
CAPACITORS (electrolytic)
CAPACITORS (silver mica)
CAPACITORS
(ceramic disk)
1.5KΩ 1/2W
(brown/green/red)
470KΩ 1/2W
(yellow/violet/yellow)
~6 in.
UNSHIELDED
buss wire
~6 in.
wire insulation
“spaghetti”
Shielded ORANGE, RED, BLUE, BLACK & YELLOW wire
8-32, 1/4” bolt, nut, washer & lock
washer for attaching the Mini-Choke
to the chassis.
4-40, 1/4” bolt, nut & lock washer for attaching
the 8-pin tube socket to the chassis.
8-32, 1/2” bolt, nut, washer & lock
washer for attaching the output
& power transformers to the chassis.
EPJR-P
(power transformer)
EPJR-O 4Ω & EPJR-OM 4, 8 & 16Ω
(output transformer)
EPJR-C-3H
(Mini-Choke™)
1x
2x
1x
1x
1x
2x
2x
2x
6x
~12 in.
coils
1x
1x
1x
1x
1x
1x
2.2KΩ 1/2W
(red/red/red)
RESISTORS (carbon film)
NUTS ’N BOLTS
OTHER COMPONENTS
RESISTORS (flame-proof)
Component Identification
Use these photos to identify the components needed to make your Version 2 or 3 PCB Upgrade:
10µF 25V or 50V
(radial)
680ρF 500V
680
1x
270ρF 500V
270
100KΩ 1/2W
(brown/black/yellow)
3.3KΩ 2W
(orange/orange/red)
1x
22µF 450V (radial)
22µF 450V
10µF 50V
Mercury nameplate
Note that most capacitors have +/- polarity. Be sure to study the
schematics for the correct directions when Upgrading your amp.
1MΩ 1/2W
(brown/black/green(
22µF 40V
axial
22µF
40V
470Ω 2W
(yellow/violet/brown(
220KΩ 1/2W
(red/red/yellow)
47ρF
47
ρF
8-pin
tube socket
Stand-off connector
with nut, washer & bolt
1X 1X 1X 1X 2X