Mesa/Boogie Mini Rectifier Twenty-Five

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Apowertubeshortorfailureisoftenthecauseofablownfuse.Positionyourselfbehindtheamplifierandfollowthecoldstartprocedure
mentionedintheSTANDBYswitchsectionofthismanual.WatchthepowertubesasyoufliptheSTANDBYtotheONposition.Ifapower
tubeisgoingbadorisarcingyouwilloftenseeitasyoupowerup!FliptheSTANDBYswitchtoStandbyimmediatelyandreplacethe
faultypowertubeandthefuseasnecessary.
IfyouseenothingabnormalasyoumovetheSTANDBYswitchtoON,itispossiblethatapowertubeshorted‘temporarily’andcaused
theblownFuse.Occasionally,whetherfromjustluckorfromcoolingdown,ashortinapowertube‘reconnects’itselftemporarilyand
canoperatenormallyagain…butthistubeshouldbeconsideredfaultyandreplacedassoonaspossibletoensureuninterruptedper-
formance.Ifyoucanidentifyatubethatisarcingorshortingbythemethodmentionedaboveandthetubeshaveminimaluse,consider
replacingtheobviouslyfaultyorfailedtubeandleavingtheothersinstalled.
Ifyouhaven’tchangedtubesforawhileafterheavieruse,thisfailuremaybetellingyouit’stimetochangeallyourpowertubes.Save
anyworkingbutusedtubesasyournewspares.
Sparefuses(ofthepropertypeandrating)areamustforthefabledcordbagalongwithsparetubes.Alwayshavebothonhand–at
thegigorathome–sincetubesdecidewhenit’stimetostopworking.Sparetubesandfusescanbeworththeirweightingoldshould
youeverexperienceatubefailure.