Ada MP-1-CHANNEL - TROUBLESHOOTING AND TECHNICAL SUPPORT; Essential Troubleshooting Tests

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6. Notethetubenearesttheedgeofthefrontoftheenclosureisthefirststageofthe
MP‐1‐CHANNELcircuitandisthemostcriticaltubeforminimizingnoiseand
microphonics.Thefirsttriodestageispins7,8,9ofthe12AX7.
7. Whenreassemblingtheenclosure,
donotovertightenthescrews.
8. Ifthereishumintheaudiosignal,checktherearpanelscrewwiththelockwasher
forpropertightnesssothelockwashermakeselectricalcontactwiththeenclosure.
9. Useonlyhighquality,low‐noise12AX7s.


TROUBLE‐SHOOTING&TECHNICALSUPPORT
1. Whataresomequickteststotroubleshootmyunit?
Sometimesafewquicktestsathomecanbethedifferencebetweenthinkingyourunitis
brokenandgettingitworkingproperly.Hereisalistofquicktrouble‐shootingstepstotest
yourgearandunit.Asbasicasthese
soundpleaserunallthetests.
a. Checksimplesignalchain:Plugyourcablefromyourguitarintoyouramp.Ifyou
haveadirectconnecttonegotostep2.Ifnotyouhav e a badcable,guitaroramp.
b. Check2ndcable:Takeyour#2cableand
switchitwiththefirstcable.Ifyouhave
sound,wenowknowbothcables,yourguitarandamp,work.
c. Checkpower:Plugyourampintothesameoutletthatyou’reusingtopoweryour
ADAproduct.Iftheampturnson,thentheoutletworks.Ifnottryanother
outletto
poweryourunit.
d. ChecknativeADASignalChain:Plugthe#1cablefromyourguitarintoyourADA
product(input).Plugthe#2cablebetweenyourADA product(output)andinto
youramp.MakesuretheADAispluggedintoaworkingpowersource.DONOT
insert
itinapedalchain,i.e.,donotintroduceanyotherpedalsintothesignal