I could make a few suggestions from nearly 60 years of doing electrical diagnosis- - - -but the first one would need to be "Toss the 8 volt battery!" Go ahead and listen to the self-appointed experts who are going to show up on this thread very soon!
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!