CE Tech Tips — August 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, 51UWX20B
Reason for Service: IC401 failure, protection
Solution: Check solder connection of C417.  Add C480, 0.1uF/50V across C417.  Add C481, 0.1uF/50V to pin 40 and 44 of IC401.

LG Plasma, 50PS30UB
Reason for Service:  Shuts down immediately
Solution:  Replaced Q801 & 802 in the power supply.  STW20NK50Z.  Also F801 was blown, 4A ceramic, slow-blow.

 Magnavox TV, 37MF331D/37
Reason for Service:  Menu pops up intermittently
Solution: Replaced two power switches to fix the set.

Samsung TV, LN3242HX/XAA
Reason for Service:  No backlight.  Might flash very briefly at turn-on.
Solution: Found an open secondary on one of the inverter transformers.  Replacing fixed the set.

Samsung TV, HLS7178WX/XAA
Reason for Service: Set shuts down intermittently when changing input or channel.
Solution: Replaced the DMD board.

Sharp TV, LC32D47U
Reason for Service:  Set comes on with a message to input the password, but end user does not know it.
Solution:  Enter the Factory Mode and Initialize the set to the out of box condition. Hold volume down and input on the set while plugging in.  You should see a K on the screen.  Release the first two buttons and hold down the front volume  and channel down.  Look for initialize on page 2.  When you see the green screen, unplug the set.

Sony TV, KDL-40XBR2
Reason for Service:  Set will power on, but no picture or sound
Solution: Found an open T-Con fuse, 3A SM.

Vizio TV, GV47LFHDTV10A
Reason for Service:  Has backlight but no video
Solution: Found U10 on the main board was defective.