LEARNING REPAIR TELEVISION

 

6. For security reasons if you fix the power supply, get used to the horizontal panel is removed first transistor, has been described above. It is important to avoid your negligence, because if the power supply is on, and horizontal oscillator output is also living up to the high voltage flyback will inject 20-25KV.Dibawah this example the horizontal output transistor (Panel) to be removed is D1877.

 

7. Unplug / suction solderan B + on the first leg that has to do with the flyback Elko 160V B + to avoid the brunt of the flyback power supply repair. If not removed it did not solder anything, will not spray the flyback voltage of the transistor for horizontal panel is not installed. But it is important also, because of what? To find out the foot B + flyback or not they will short-circuit. If short-circuit, then the B + voltage of power supply would die after being linked with foot B + flyback. Then directly you know that the flyback is a short-circuit. In the example shown below B + pin that needs to be removed.

 

8. If the voltage B + is not yet out, then the next step before measuring the active components, such as the transistor Tr {}, all the measured one by one, if it finds any defective then replace a new one.

 
9. The ninth step, if the B + power supply has not come out well but all the normal transistors, then check out 110V Zener diode. The shape of the Zener diodes, such as diodes 3A.Nah .., usually zener break, because this is a zener diode barrier B + 110 VDC.

 
10. The tenth step, eg B + has not come out well, although active components such as transistors, diodes have checked all normal. Then check resistors {R}, typically R leading Transistor Base Panel of Elko 400V power supply cut off, its value is around 100k-150K there are 2 pieces, replace the resistor.

 
11. Power supply on television for his panel / transistor output transistors do not all wear, some wear STR or SMR. STR is IC Integrated Circuit {} but it will also have fruit and transistor 2 resistor. If it is broken then the STR ​​R around usually damaged, broken or elongation, if we replace the STR​​, then it all changed R_nya STR perfect working order. Well, if the television is turned on but there is a direct power off or the power supply jeglek definitely broken, which is the primary. There are four factors that cause them regulator panel is damaged / short-circuit (transistors, STR), bridg_nya diode short-circuit, 250V mylar capacitor can also short-circuit or short-circuit 400V Elco.