slugs 0 Report post Posted November 18 looked at this web site for clues many times for help. today my tester which would cost a small fortune to replace was not working display , completely dead. after checking the 500ma fuse and replacing batteries still no luck. so tested out put voltage of battery holder and got 12.3 volts ( should be fine ! but not) on reconnecting the stud connector nothing worked ,. so getting a little cross by this time I ended up crushing the battery holder in my hand ????? Yep the tester came back to life. So all I have to do is place an order on line for a new "8 cell aa battery holder" and it will work. So what happened??? cold weather and prior flat batteries caused corrosion in one of the battery stud connector , so fine I could barely see it. So even with new batteries only about 5 - 6 volts where fed into the tester circuit. half power I suppose is like ending up with a half when you really fancy a pint 0 Share this post Link to post Share on other sites
Bruspark 73 Report post Posted November 18 A bit of dilute white vinegar will clean off any remaining alkalii corrosion then fine Emery to re-finish. Not ideal but usually get a couple more years out of terminals I've done that with 1 Share this post Link to post Share on other sites
