Tech Tips — August 2014

CE Professional Tech Tip Sharing

August 2014

**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, 46UX12B

Reason for Service: Loss of brightness

Solution: Replaced IC-006.

Hitachi TV, 
65XWX20B

Reason for Service: 
No video, audio or osd.  Turning up screens, you will see some.

Solution:  Check video mute AC protect and H BLK, found Q445
shorted.  Replaced.

JVC TV, AV36850

Reason for Service: Dead

Solution:  Replaced C926, 1000uF/16V.

Mitsubishi TV, WS55909

Reason for Service: Timer light blinks continuously. PS 5V and 3.3V are low.

Solution: Check and replace
C9811 surface mount, located across from the 12V supply on IC9800.

Panasonic TV, PT-47WX53/RP

Reason for Service: No picture but you see retrace lines

Solution: Replaced Q944 and
Q945.

Philips TV, 
50PFP5332D/37

Reason for Service: 
Dead

Solution:  Replaced 3 caps, C601 and 609, both 470uF/25V and C036,
100uF/50V.

Samsung TV, HLR5067W

Reason for Service: 
Vertical stops working, intermittently, good sound
and lamp ok.

Solution: Found SM C9005 in
digital board open. 10uF/10V.

Sharp TV, LC52E77U

Reason for Service: 
Replaced a bad main board, and now a “k” is
flashing on the screen.

Solution: When you turn the
set on and see the k, quickly toggle volume up and channel down together.  You’ll be in the service menu.  Look for Industry Initialization in the menu,
activate it and wait until it finishes. 
Unplug the set then plug it back in and turn it on. The “k” should be
cleared now. 

Sony LCD, 
KDL40V4100

Reason for Service: Picture too dark and color too rich

Solution:  T-Con is bad, but before replacing, try replacing just
the AS15-F chip on it. 

Toshiba TV, 42HP83

Reason for Service: Set would play for a couple of minutes then shut down.
Two blink code.

Solution: One of the fans
had stopped running, replaced with 23125910.