hi i am asish and i will tech you mobile repair basic to advance mobile repair today i tech you about mobile pcb resistor and type and connections ..
smd resistor only work to control voltage (down the voltage) A resistor is mobile pcb total 5 type .. but they work semilary down the voltage ..
i thing you know some things about resistor i tech you every small details and mobile repair guide today i tech you mobile smd resistor..
what is smd Resistance
HOW TO DENOTE RESISTOR AND CHEK VALUE OF A RESISTOR..
- A RESISTOR IS DENOTED BY THIS CHARACTER
- THE UNIT OF RESISTOR - OHM
- THE POWER RATING OF RESISTOR IS - WATT
COADING OF RESISTOR
|COAD RESISTOR||OHM RESISTOR|
|683||6800 OHM / 68K OHM|
|105||1000000 OHM / 1M OHM|
|4992||49900 OHM / 49.9K OHM|
TYPE AND WORK OF USABLE MOBILE PCB RESISTOR
simple resistor work only low the current and provide point 2 point voltage in cerkit simple resistor appears black color and bottom is white .
this resistor show cods upper of resistor body its work like simple resistor ..
voltage depanded resoistor (VDR)this resistor work on voltage if voltage up resistor resistence up if voltage low resistence low.
thermistor work on temparature and up-down his resistence
this resistor have very low resistance its work protect parts.
RESISTOR CONNECTION OF MOBILE PCB
Resistor work 2 type of connection 1> SERIES 2>PARALAL
SERIES CONNECTION OF RESISTOR
most of mobile pcb use 90% of use series connections resistor . becasuse mobile pcb need various voltage resisitor helps to provided verious voltages in mobile pcb.
PARALAL CONNECTION OF RESISTOR
A mobile pcb resistor in paralal connecton of 5-10 %
Paralal connection of resistor upper 1000OHM OR Resistor in Nagative Supply ..( only 2 terms posible)
Mobile pcb have resistor paralal connection for down the whole supply voltage.
WHAT DO IF RESISTOR DONT WORK OR OPEN CONDITIONS
- FIRST CHEK RESISTOR VALUE PRINT BORD OR RESISTOR BODY IF HAVE CHANGE SAME VALUE RESISTOR . IF VALUE NOT PRINTED BUT RESISTOR OPEN THEN TRY THIS RESISTOR ONE BY ONE 100% WORK [ 200O HM-400OHM-550OHM-960 OHM-1 KOHM-1.5K OHM-1.8 KOHM ]
- IF RESISTOR UNDER 100 OHM THEN JUMPER THIS WORK 100%
- TRY REPLACEMENT SAME VERSION SAME TYPE AND SAME SECTIONS.
- ONLY REPLACEMENT PARALAL CONNECTIONS RESISTOR EVEN UNDER 100 OHM PARALAL ONLY REPLACEMENT.
KEEP VISIT FOR MOBILE REPAIR TRNNING OR KNOWLAGE.