There must be a short circuit inside the VOM. If you can open it up easily, check all the wires for short circuits, especially the wires that connect up to the function switch.
Go to www.triplettcorporation.com Or call Triplett Electric at 1-800-874-7538 Monday thru Friday. I have the Triplett Model 630A. If you need further help, I’m available over the phone at https://www.6ya.com/expert/anthony_e4f197748c31eabd
