Tech Tips — October 2015

CE Professional Tech Tip Sharing

October 2015

**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.

Emerson TV, LC320EM1F FL10.3

Reason for Service: 
Dead set, no LED lit or blinking

Solution: Found a bad 390k
ohm resistor open in series to the gate of Q501.  Check them all.

Hitachi TV, 51UWX20B

Reason for Service: 
Shutting down. 
Horizontal output voltage and B+ Ok. 
Horizontal output collector distorted waveform.

Solution: Replaced defective
TH01.

Magnavox Combo, MSD724G

Reason for Service: 
Dead

Solution: Found a shorted diode,
D1618 located in the secondary or the SMPS. 
FR154, used an ECG580.

Mitsubishi TV, LT46144

Reason for Service: 
Video has solid vertical lines

Solution: Replace the
panel.  289P107010 – call Mitsubishi to
see if they will help with the cost.

Panasonic flat panel, TCP42X1

Reason for Service: 
Dead, one blink

Solution:  Replaced defective A CBA.   #TXN/A1EQUUS

Panasonic Plasma TV, TCP60ST30

Reason for Service: 
Mechanical buzzing noise

Solution: Loose screws,
install Kit # XYN3+F6FJ-12PK. 

Samsung TV, LN55C610N1FXZA

Reason for Service: 
Picture flickers intermittently.

Solution: If your model uses
the BN44-00342B power supply, snip jumper JP854.

Sharp TV, LC26SU10

Reason for Service: 
Has sound but no backlight

Solution: Problem was a bad
small black fuse near two larger ones on the backlight board.

Sony TV, KV-36XBR800

Reason for Service: 
Two blinks and shuts down

Solution:  Found an open R5065, 270k ohm, Sixteenth W surface
mount,  located pin 4 of HO transformer,
T5001.  Replaced with eighth W.

Toshiba TV, 46UX12B

Reason for Service: 
No power, no relay click.

Solution: Found Q-0015
bad.  Replacing it fixed the set.