BA500 - Ampeg

BA500 Bass Amp ComboTroubleshootingIn the unlikely event that your BA500 should stop working properly (or just stop working), take a few minutes to troubleshootit before you call for service. You can save yourself a lot of time and sometimes money by doing it yourself, andoften the cure for the problem is something quite simple.NO SOUNDPOOR SOUNDLEDs LIGHTLEDs DON'T LIGHTCheck bass, cablesCheck amp controls, checkfor signal from bassNO SOUNDListen for humSOUND OKCheck AC outletOUTLET OKCheck power cord,fuse, power switchNO OUTLETCheck house fuseboxor circuit breakerPOOR SOUNDCheck speaker(s)SPEAKER(S) OK,POOR SOUNDSOUND OKSPEAKER(S)DEFECTIVENO HUMHUMOKReplace speaker(s)Check speakerSpeaker OKSOUND OKUnplug bass,touch tip of cableNO CHANGEReplace cablePOOR SOUNDSOUND OKNO CHANGESEE BELOWSEE BELOWIf the problem isn’t covered above, or if the steps lead you here, then contact your Ampeg dealer for service information.Also, you should refer your amp to an authorized service center for servicing if it gets dropped, has liquid spilledinto it, or sustains damage to its power cord. Regular cleaning and maintenance by your local Service Center will helpextend the amplifier’s useful life.System Block DiagramTUNEROUTPOWER AMPLIMITLEDPROTECTIONRELAYINPUTPADPREPOST-20dB PADBAL.OUTCOOLINGFANLIMITThermal Shutdown,Low Voltage,DC ProtectPOWER AMPINSPEAKEROUTSPEAKEROUTMUTEMASTERPREAMPOUT1+1- 2-2+SPEAKONJACKPEAK/MUTELEDEFFECTSLOOPRETURNGAINBASSULTRA MID TREBLEEQON9 BANDGRAPHICEQEFFECTSLOOPSEND7