Needed: Model 400A Schematic/Manual Jan 31, 2013 17:25:39 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by alfa88 on Jan 31, 2013 17:25:39 GMT -5 I just got a model 400A tube checker off EBay. It's in serious need of TLC. A schematic and/or manual would go a long way to restore this thing to it's former glory.Attachments:
