LEARNING REPAIR TELEVISION

12. As the picture below is the primary regulator: 

  

13. If the secondary voltage is already there, then you measure and adjust the trimpot B +, the average voltage of 110-115 Vdc.Dan measure the output voltage B + to another appropriate standard.

14. Condition that the engine can live television must have a voltage power supply, horizontal oscillator, driver Horiz, Horiz output, B + vertical and vertical output and heater voltage, screen voltage (G2), video output and voltage TEG RGB.Diantara these parts The most important role is the power supply and horizontal, the second part is like the heart, to live first, later the other new. How are the voltage between the parts they will be, the following explanation:

- Power supply: 110V-115Vdc  IC-B + program : 5VDC  IC-B + osc : 12Vdc Teg for IC tsb {}  Horizontal driver-Col: 50 Vdc colector Tr {horz} driver- H-Out: 0.2 Vdc {osc IC to the base of Tr driver Ho}- V-Out: 0.2 VDC  IT-Out Transformers: 0.5 to 2 VAC  Vertical IC-B +: 24Vdc {TEG IC for vertical use)  Vertical-Output: 12V-16Vdc {from the IC to the deflection of vert vert}- B + Audio: 16 VDC- B + Tuner: there is also a distinguished 12 VDC 5 VDC- Heater (Filament): 6VAC- Screen (G2): 250V-500Vdc  RGB cathode-{}: 90V-125Vdc- Video output: 180Vdc flyback {from}- Program: 5VDC {TEG B + for the IC program}

15.  Jika voltage of power supply were all normal, then the important thing is to have to turn part of the dahulu.Mulai horizontal oscillator, driver and output horizontal.Untuk other parts later. You see the data on the thirteenth step, adjust the voltage. Rapid and practical, directly measuring the voltage at the base of the horizontal output transistor (of which IT transformer TR horizontally out towards the base) must be approximately 0.5 to 2 VAC, very small (must exist). If the base voltage is already there means they will be the engine is on, and you do not need to measure the start of the oscillator. The following figure is the voltage from 0.5 to 2 VAC transformer which must exist from IT to the horizontal base of TR.

 

If the voltage of the transformer TR IT into horizontal base out there, then the machine is not possible to live television, then you just sort pengecekannya. Starting from the oscillator to the horizontal output. If the tension is already there means the machine has been able to live TV and the horizontal output transistor pairs are released earlier, but the measured first transistor is good or not and the machine is ready to try TV.

 
16. Quite clear from the above summary of the total dead TV deal, ranging from checking the power supply to turn on the TV, then you are able to service the TV yourself without asking the help of another workshop.
Below is an example of an oscillator IC pin TA8690AN and data:
IC is frequently used on the machine and the Roots i Goldstar TV: