Hello everyone,
I was repairing a TV and measuring voltages in AC+DC mode as usul, suddenly the lcd turns off then turned back on once I removed the probes. I figured out it happens only for AC voltage measurements (either in ac mode or ac+dc one).
When selecting mAC the lcd reading is full barre reading, but once measuring in AC or AC+DC an AC voltage the digits disappear as far as the probes are on the test points. DC voltage is measured without problem and doesn’t cause the lcd to turn off at AC mode.
I changed the batteries and made factory reset, nothing changed.
I opened the multimeter nothing suspicious, I saw an bridge rectifier Df068 and I doubt if it’s the cause of the problem. I don’t have any other multimeter to measure the components.
The readings are normal when the probes are shorted or open. Again the problem appears only when measuring ac voltage (case 220V ac)
Thank you.