17-07-2020, 04:40 PM
Hi all
I am still at a complete loss on this one.
I still cannot understand why pins 3&4 are connected on the EZ81 as it doesn't seem right having looked at various videos such as Uncle Doug's? I have tried bypassing the mains switch with a direct connection - no difference to the hum. I have cut pins 3 & 4 on the EZ81 - no hum (hooray!) BUT no audio output whatsoever.
Can anyone suggest for an absolute novice like me what point to investigate with the 'scope to look at the signal outputs.
I really feel like junking this old amp as its causing me nothing but grief and it must be boring the hell out of you guys!!
Best Regards
I am still at a complete loss on this one.
I still cannot understand why pins 3&4 are connected on the EZ81 as it doesn't seem right having looked at various videos such as Uncle Doug's? I have tried bypassing the mains switch with a direct connection - no difference to the hum. I have cut pins 3 & 4 on the EZ81 - no hum (hooray!) BUT no audio output whatsoever.
Can anyone suggest for an absolute novice like me what point to investigate with the 'scope to look at the signal outputs.
I really feel like junking this old amp as its causing me nothing but grief and it must be boring the hell out of you guys!!
Best Regards
if all else fails...read the instructions!
