CE Tech Tips — March 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.

Hitachi TV, 60SX2K
Reason for Service:  Loss of audio in the surround mode only
Solution:  Replaced defective three-way surround board.

LG plasma, 50PA4500-UMAW-DUHR
Reason for Service:  Plays okay for a short while, then LG logo appears and no buttons work.
Solution: Check to see if C802 has turned black; if so, replace it.  22nF/1250V

Mitsubishi TV, LT-52246
Reason for Service:  Dead, no standby
Solution: Found two bad resistors on the power board:  R9A19 and R9A20.  Both 68k ohm.

Philips TV, 50PFP5332D/37
Reason for Service: Just clicks when you plug set in.
Solution: Found several bad caps on power supply board: DC8404, 8405, 8413 & 8414, all 680uF/50V and DC8013,  1000uF/16V.

Sanyo TV, DP50747
Reason for Service:  Turns off while playing
Solution:  Found bad solder on Q110, and replaced three domed caps.  C175, C176 & C177,  2200uF/10V.

Sony TV,  KDL40V4100
Reason for Service:  Picture very bright; bright control has no effect
Solution:  This one was a bad panel.

Toshiba TV, 62HMX94
Reason for Service:  Bad lamp (shattered); installing new lamp did not fix the set. Crackling noise in ballast area.
Solution:  Replacing the ballast allowed the set to work with the new bulb.

Vizio TV, VX37LHDTV10A
Reason for Service: Set will turn on with back light, but no Video, Audio or OSD.  Logo turns white.
Solution: Found regulator U5 bad, AMC1117.