Mercury Epiphone Valve Junior - Page 41

Epiphone Valve Jr.•Mercury Upgrade Kit 41
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.
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1
1
Trace
cut
Dremel
Tool
2
Here’stwo
differentways
tocutatrace:
OR
Various examples:Thisphotoshowsacuttrace,andacom-
ponentleadjumperedandsolderedtoarevealedtrace.It’sbest
tonotdrillaholedirectlyintoatrace.Insteadmaketheholeoff
tothesideofthetraceandthen,asinthisexample,solderthe
component’slegtothetrace.
oftenjustfalloffintheprocessofmakingrepairs
andmodications.Ifthishappenstheeasiest
workaroundistorevealabout1/8”oftracematerial
(neartheeyeletholeonthesamecircuit)and
solderthecomponent’sleadconnectiondirectlyto
that.
Or,ifthere’sanearbysolderedconnectiononthe
sametrace,youcanusethecomponent’sleadto
jumperdirectlytotheterminal.
Ifaneyeletisdamagedormissingorthetrace
materialarounditisverythin,thenyoumay
considersolderingareinforcementjumperacrossit.
How to Cut a Trace:A“trace”istheconductive
strip(foil)onaprintedcircuitboard.Ithasavery
thinlaminateorlacquerlayeroverit.Cuttingatrace
islikeclippingawire.Useaboxknife,Exactoknife
oraDremel Toolwithacuttingorgrindingedge
attachmenttomakethecuts.
Atrace cut severestheembeddedmetallaminent
onaPCB.Thepurposeofatrace cutistomodifyor
re-routetheelectricalowofthecircuit.