CE Tech Tips — November 2019

CE Tech Tips — November 2019

Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information. 

Hitachi TV, 57UWX20B
Reason for Service: Freezing or any unusual eeprom or micro suspected problem
Solution: Add jumper from I007 pin 1 to cathode of D019.

LG TV, 47LD520-UA
Reason for Service: After set warms up, starts cycling off and on
Solution: Found and resoldered many bad solder joints around Q707, 708, 709, 710.

Panasonic TV, TCP50U2
Reason for Service: Dead, 10 blink error code
Solution: Changed mail board to repair.

Samsung TV, LN-T2353HX
Reason for Service: Set won’t start, but has power light
Solution: Found open CM802 in power supply: 18nF/630V (box cap).

Samsung TV, PN64D550
Reason for Service: Dead set
Solution: Found two burned caps in power supply: C816 & C817.  Also found bad solder on many components in power supply.  Examined and resolderd.

Samsung TV, IN40A530P1FXZA
Reason for Service: Bad video, audio screeches, starts slow
Solution: Replaced C102 and C131.

Sony KDL52W4100
Reason for Service: Picture has some faint blocks in center of screen, which go away after warm up
Solution: Replaced T-Con.

Sony TV, KDL40BX450
Reason for Service: Dead set, no standby
Solution: Replaced main board.






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