DT 830D DIGITAL MULTIMETER TROUBLESHOOTING

DT 830D Digital Multimeter Fault Finding Pcb Component

DT 830D DIGITAL MULTIMETER CIRCUIT BOARD  COMPONENTS


Fault 1 = If you connect probe each other in continuity mode buzzer sound on but when you release probe buzzer sound not off up to 30 - 40 second
 An - R 16 = 132 = 1300 ohms = 1.3K ohms
Fault 2 = When measure voltages without connecting say some voltages, If short probes then it read zero
An = R5 1000 = 100 Ohms
Fault 3 =  On continuity  mode without connecting prove buzzer on, Voltage Measure mode read      negative - voltage
An - R7 - 105 = 1M Ohms
Fault 4 = Values increase in Ohms mode and Voltages Mode
An = R6 = 9000 = 900 Ohms
Fault 5= Ac Voltage not Measure
An - D1 - M7
Fault 6 = Ac voltage measure but its not accurate
An = R1 = R2  = 514                R3 = 224
Fault 7 = On  Every mode values increase and decrease
An = R4 =224 = 220k Ohms

Front Image dt 830d image

DT 830D Digital Multimeter BACK SIDE

DT 830D Digital Multimeter  R17 R18 IMAGE

R17 = 9R00
R18 = R990

DT 830D Digital Multimeter R22 R23 IMAGE

R22 = 224
R23 = 224

DT 830D Digital Multimeter R15 R16 R19 R20 R21 D1 IMAGE  

R15 = 1006
R16 = 132
R19 = 9002
R20 = 3523
R21 =5483
D1 = M7

DT 830D Digital Multimeter R14 R13 R12 C5 IMAGE

C5 =
R12 = 2002
R13 = 101
R14 = 1003

DT 830D Digital Multimeter R7 R5 R6 R1 IMAGE

R1 = 514
R5 = 1000
R6 =
R7 = 105
C3 =

DT 830D Digital Multimeter R2 R3 R4 IMAGE

R2 = 514
R3 = 224
R4 = 224

DT 830D Digital Multimeter  R8 R9 R10 C4 R11 IMAGE

R8 = 1302
R9 = 3900
R10 = 1003
R11 = 1001
C4 =

DT 830D Digital Multimeter Back side pcb image