LEARNING REPAIR TELEVISION

 

Examples of TV engine that has been removed from the tube.

 

  

Power Supply Section

Pictured above is an example of the power supply / regulator machine old JVC TV. You should know the names of the components and functions and how they will be working regulator. Thus you will more easily in engine repair TV. So not able to measure the components of the origin of life and death should be a little saja.Tetapi analyze the working order of the regulator TSB.Next is a TV repairman steps off the total. I type these steps in sequence, starting from the open box to complete refit. The goal for novice technicians who are just starting to learn to better understand television repairman. For senior technicians was probably my blog is useless. So please be advised to have a senior technician. Thank you.Steps:

1.  First, open the back of the box lid. If the television is off total repair like this, it's better off away from the television machine tabungnya.Seperti example in the picture above. In order to more freely when turning the engine tsb television. In addition, it is convenient in checking the components and the measurement of risk is not yet secure tegangan.Tabungnya hit hard objects that accidentally during repairs, such as screwdrivers, pliers or other tools. Carefully remove the engine, wiring associated with the tube must be removed first as flyback letterhead (not to be held kopnya before discharge voltage). And do not jump off, remove the first voltage flyback is still stored in the header, usually still there. The trick is take one multitester cable, then connect the plug to ground multi TSB tabung.Dan a taper plug to stick into the header will be wasted flyback.Maka voltage remaining in the header and the tube tersebut.Setelah wasted then they will head out of the tube with using tespen.Kenapa using tespen? The aim if there is still a little tension, it will be wasted on tespen lights, you are more aman.Setelah head off, then release a series of RGB blocks embedded in the neck tube, very careful in removing the socket, as if the foot of the cathode tube there are up to broken or cracked glass tube neck, then you replace it tabung.Lihatlah example above.

2.  The second step is to clean the dust that is thoroughly and also clean the dirt on the pcb tracks by using a toothbrush and thinners used that quickly evaporates or it could be alcohol. How, thinner or alcohol drops on a toothbrush and dps to be cleaned, then scrub with a brush to clean the dirt from kotoran.Mengapa dps needs to be cleaned? The aim is that the cracked solder looks and ease of checking or soldering. Next is to remove the previously existing horizontal panel Transistor cooling flyback.Untuk avoid negligence near you if the machine is live television. Because if a machine live television, then the high voltage flyback will spray a 20-25KV.Coba you imagine if exposed to that much voltage. But if you have removed the transistor panel then you are safe. Because this is important, I remind you not to keep fear saja.Tapi, entar after reading this guide you takut.Jadi a technician should not be afraid your important and always carefully note the location of each flyback letterhead will try to turn on the television machine, do not lie above / below the engine. Kop flyback far along they will have to put the header and the cable is facing up or put it more safe in the glass (this position if Tr horizontal panel is mounted, if not installed it does not matter).

3.  The third step is to check voltage 220V and 220V voltage sekringnya.Apabila normal & normal fuse, then check the voltage at 400VDC Elko, if no voltage then check 4 diodes or diode bridg_nya penyearahnya, there may be damaged.

4.  Step four, if the voltage at the Elko existing 400V (the voltage is only around 250-300VDC, not exactly 400VDC) and then measuring the secondary voltage of 110-115 VDC.

5.  If no voltage is 110VDC, then we check one by one the secondary power supply  do soldering on the back before the suspect has not come out and try hidupkan.Jika 110V B + voltage, so do check the components one at a secondary power supply area. The images below are examples of secondary power supply block.