CE Tech Tips — November 2016Kristin Hurst
CE Professional Tech Tip Sharing
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 logic control board fixed this set.
RCA TV, F36650, ATC113
Reason for Service: Partial loss of vert on top and bottom; white lines appear 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, the amber logo appears, but nothing happens after that.
Solution: Check two 470uF/35V caps on the inverters and 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.