CE Tech Tips — July 2021

CE Tech Tips — July 2021

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

Hisense TV, 50K360G
Reason for Service: Has audio and backlight, but no picture.
Solution: Replaced T-Con. 

Reason for Service: Dead set
Solution: Replacing C127 and C127 restored normal operation.

Panasonic Combo, PVDM2791
Reason for Service: No vertical
Solution: Replaced the following: U451, LA7331, C401, 2.2uF/50V, C402, 470uF/16V, C408, 1uF/50V, and C409, 100uF/35V.

Samsung plasma, HP-R4252
Reason for Service: Picture has red dotted horizontal lines
over 3/4 of the screen.
Solution: Replacing both lower and upper buffers fixed the set.


Sony TV, KDL55EX710
Reason for Service: Set shuts down a couple of hours after turning on. 7 blink error.
Solution: Ensure set has good ventilation; might have to replace BAL board.

Vizio TV, E370VLE
Reason for Service: Set won’t start. Logo changes from amber to white, but no B/L, no sound.
Solution: Found D120 on power board was shorted. Used MUR460.

 Vizio TV, M470NV
Reason for Service: Unit powers on, logo goes white then back to amber and set never starts.
Solution: Reflowing U9 on main board fixed the set. 

Westinghouse TV, DW37H1G1
Reason for Service: Set just keeps cycling the colors and will not turn off.
Solution: Unplug set, hold MENU button down while plugging set back in.


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