LG TVs return pearlblack 21FU3RD patients with complaints of flame in short then died fully.
Try tv is turned on, the ability crystal rectifier turns off once more regarding a pair of seconds. once turned on there's a pop / induction before of the screen / cathode-ray tube, sign blocks horizontal work although solely a pair of seconds. This TV can even be finished shield.
Try tv is turned on, the ability crystal rectifier turns off once more regarding a pair of seconds. once turned on there's a pop / induction before of the screen / cathode-ray tube, sign blocks horizontal work although solely a pair of seconds. This TV can even be finished shield.
Remove the rear of the TV, then check the result elco ok all, attempt to live the B + voltage Flyback, once enkindled there lamb regarding 115V then drop to zero.
Replacement vertical LA78141 IC doesn't work, attempt to replace the optocoupler conjointly stay a similar as before. Then attempt to replace Q840 = KA431 and fortunate tv traditional flame.
Replacement vertical LA78141 IC doesn't work, attempt to replace the optocoupler conjointly stay a similar as before. Then attempt to replace Q840 = KA431 and fortunate tv traditional flame.
Component :
IC 501 = LV76211 3C (MICOM)
IC 301 = LA78141 (vertical)
IC 02 = 24C16B (eprom)
IC 810 = STR W6554A (powersupply)
Q 402 = C6090 are often replaced TT2140 (horizontal)
= BSC25-N1534 FBT (without capacitor)
Hopefully advantages ......
