CE Tech Tips — June 2020

LG TV, 47LE5500
Reason for Service: Set seems to start with white LCDs flashing, backlight comes on but no audio or video.
Solution: Replacing main board fixed set.

LG Plasma TV, 60PK750
Reason for Service: Set powers up normally with two clicks when you turn it on, but if you turn it off and back on again, set won’t come on. Red LED blinking.
Solution: Replace cable between main and power board.  EAD60958306

Polaroid TV, FLM323B
Reason for Service: Dead set.
Solution: Replace all caps in power supply and under heatsinks.

Samsung TV, LN32D430G3DXZA
Reason for Service:  Backlights not coming on, audio okay.
Solution: Power supply had some distressed areas from excessive heat; replaced entire module.  BN44-00438B

Samsung TV, HL67A750A1FXZA
Reason for Service: Set shuts down and 3 LEDs blink in the front.
Solution: Replacing LED driver board fixed set.

Sony TV, KDL55HX729
Reason for Service: Won’t power up, 2 blink error code.
Solution: Check and replace as necessary:  Q6602 & Q6603 on secondary power board and R6540 on main power board.  0.1 ohm/2W

Vizio TV, GV47LFHDTV10A
Reason for Service: At turn on, relay clicks and then clicks again in a few seconds. All yellow LEDs on set front are on, and you can only turn off by unplugging set.
Solution: Check for open 1.5A fuse on main board or check U5.  AMC1117