CE Tech Tips — April 2017

Consumer Electronics Professional Tech Tip Sharing
April 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, 57UWX20B
Reason for Service: No video
Solution: Found L306 open, replacing fixed the set.

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

Panasonic Plasma, TCP50S30
Reason for Service:  Shuts down with 8 blink code
Solution:  Discovered loose ground screws on the SS board.  Replacing them with Panasonic kit XYN3+F6FJ-18PK fixed the set.

Philips TV, 50PFP5332D/37
Reason for Service: Set powers on with the run light, but panel doesn’t prime
Solution:  Replacing the logic control board fixed this set.

RCA TV, F36650,  ATC113
Reason for Service: Partial loss of vert on top and bottom; has white lines in picture
Solution: Replaced DF01,  #155276.

Samsung TV, LN32C540
Reason for Service:  Has standby, but nothing works
Solution: Common problem is CM808 in the power supply board.  0.018 polyethylene/800V cap (18nF), use a higher voltage.

Viewsonic TV, N3252W
Reason for Service:  No video, sound okay
Solution:  Replacing the T-Con fixed the set:  320WA01

Vizio TV,  SV471XVT
Reason for Service:  Won’t come on.  In standby, amber logo is visible, but nothing happens after that.
Solution: Check two 470uF/35V caps on the inverters.  Replace as needed.

Vizio TV,  VX37LHDTV10A
Reason for Service:  Power comes on with backlight, but no audio, video or OSD.  Logo does turn to white.
Solution: Replacing U7, AMC1117 and U9, K1117 fixed the set.