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Station X · 2nd Sep 2019, 11:13 am

What resistance range are you using on your meter? If it's a low range 'O/L' could indicate either an out of range or infinite reading.

You were asked to measure the resistance to the neutral pin of the mains lead, but it appears you may have measured to earth?

EDIT. Not so sure about that. Maybe you're defining where each lead from the mains transformer goes to? I would expect the resistance of the primary winding to show up on at least one tag.

2nd Sep 2019, 11:13 am	#76
Station X Moderator Join Date: Jan 2003 Location: Ipswich, Suffolk, IP4, UK. Posts: 21,289	Re: Shaftesbury 519 amplifier What resistance range are you using on your meter? If it's a low range 'O/L' could indicate either an out of range or infinite reading. You were asked to measure the resistance to the neutral pin of the mains lead, but it appears you may have measured to earth? EDIT. Not so sure about that. Maybe you're defining where each lead from the mains transformer goes to? I would expect the resistance of the primary winding to show up on at least one tag. __________________ Graham. Forum Moderator Reach for your meter before you reach for your soldering iron.