CE Tech Tips — July 2017

CE Professional Tech Tip Sharing
July 2017

**NOTICE**

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

Emerson TV, LC321SS9
Reason for Service:  Set shuts down
Solution:  Replaced D637, FR154, used NTE580.

Hitachi TV, 57UWX20B
Reason for Service:  Convergence goes bad after customer does manual adjust and turns the set off
Solution:  Clear DCU Adj centering magnet for correct offset for RD, GRN and BLU according to the service manual.  Read old ROM, touch up and save.

LG TV,  42LG50-UA
Reason for Service: Dead set, red LED blinks continuous.
Solution:  Unplugging the inverter stopped the LED blinking.  Found a shorted C58 on the inverter board.  Replacing restored the set. 

Samsung TV, LN40A630M1
Reason for Service: Won’t start or very slow to start.
Solution:  Found bad DC to DC converter on the main board. IC101.  MP2363DN-LF.

Sharp TV, LC37HV4U
Reason for Service:  Set will not turn on unless it’s cool
Solution: Replacing IC4303 on main board fixed the set. 

Sony TV, KDL46HX820 (LED backlit)
Reason for Service: When turning set on, bottom part of screen is darker than the rest, then set shuts down with 4 blink error.
Solution:  Replacing backlight control board fixed the set.  LJ97-03357B.

Vizio TV,  E420VO
Reason for Service:  Shutdown
Solution: Replaced main board.

Zenith TV, Z56DC1D
Reason for Service:  After about 15 seconds, set shuts down, with lamp flashing
Solution: Replacing color wheel fixed the set.