LG Split AC PCB Repair

-
PCB-Printed Circuit Board. PCB mainly consists of Microcontroller which we can say that it is the brain of the circuit without this the circuit is incomplete. Microcontroller and other components of PCB combine forms a Circuit in which Microcontroller operates all functions. The Microcontroller (mn101ef31gxw) is a programmable IC(Integrated Circuit) which can be programmed to operate any kind of machine. One more IC called EEPROM(24c04) also works with it. 

Other than these PCB need power like 5volt to operate microcontroller and 12volt for other components like Relay, etc. 

Mostly the problem that comes in LG Air Conditioner PCB is power supply related. The SMPS power supply becomes faulty due to fluctuation of light and other some reasons. 

Other than this power supply problem, the EEPROM IC problem also comes in the PCB. Due to this IC problem, sometimes it does not ERROR on display and the PCB also not works. When the IC becomes faulty, then the technician also faces some problem regarding this EEPROM data because the data can't be recovered from faulty EEPROM IC. 

If their is any other faulty components or gate IC then it can be easily repairable. As in EEPROM many gets confused and find it difficult to repair but its not very hard task to do you only need to do is to insert new EEPROM data in it only if you have backup data. If not then you can contact us 


 






Comments

Post a Comment

Popular posts from this blog

EC ERROR IN AIR CONDITIONER

-
 Nowadays, many Air Conditioners of various companies show  EC, E6, E4 errors. According to the companies Error code booklet, these errors are of a shortage of Refrigerant(Gas). EC error doesn't appear directly after turning ON the Air Conditioner, it takes time nearly about 30 - 40 minutes. During this time period, the AC compressor turns OFF almost 3-5 times and after it turns ON and OFF then the error appears.  Those technicians who encountered these kinds of errors said that after a proper balancing of the backpressure of the gas and proper working of the Air Conditioner(cooling ) then also the Error doesn't go off.  Causes of the error: If the Air Conditioner is installed by the Unskilled or Newly joined technician then this problem arises as the New or Unskilled Technician may not have followed the guidelines on how to install the Air Conditioner properly and by not taking preventive measures.  The technicians who are new to this field may not take preventive measures as
Read more

IFB Door Lock Error >> how to work door switch ( part 2 )

-
Working on the door switch The door switch is an electronic and mechanical part. Or we can say that a combination of electronic and mechanical parts works as a  door switch. There is a one PTC indoor switch that operates on AC 230volts.  If PTC will get short then the door switch will get short and  it  will  also affect the functioning of P.C.B.  When any technician  replaces  the door switch but it doesn't work due to the malfunctioning of P.C.B. These types of faults usually occur in washing machines nowadays. Due to these washing machine's Display panel also shows Door lock error and the whole machine stops working. The technician usually changes the whole P.C.B when the machine  shows this type of error or fault. But these are repairable faults. We will talk about the fault in detail in the next blog. To be continued....... And when this PTC gets AC supply then it works as a heater and acts as  a power supply. It means when PTC gets heated then it cuts off the supply as it
Read more