CE Tech Tips – June 2016

CE Professional Tech Tip Sharing

June 2016

**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.

Durabrand TV, DU2701

Reason for Service: Dead

Solution: 
Replacing the following fixed the set:  R503 & 511, each 1.2megs, and D509 an 18V
zener.

Hitachi TV, 
60SX2K

Reason for Service:  Hum in the audio

Solution: 
Found two leaky transistors: Q4013 and Q4008.  Replacing them fixed the audio.

JVC TV, LT-32EM20, (Funai made)

Reason for Service: Dead, standby low, 13V supply
was 24V

Solution: D633, 15V supply was shorted.  MUR460

LG TV, 55LV5500

Reason for Service:  Video smearing on all inputs and formats

Solution: 
Replacing the T-con controller board fixed the set.  #6871L-2430D

Mitsubishi TV, 
WS55413

Reason for Service: Shuts down at power on with a
2-1 error.

Solution: 
At power on, check for 12V at connector KH, pin8.  If missing, check IC9C51, #270P990010 and
L9C52, #441D009020, on the signal board.

Pioneer Plasma TV, Pro-434PU

Reason for Service:  Shuts down with 7 blink code.

Solution: Replacing the Y-Main fixed the
set.  Set uses a trap switch; be sure to
tape down before taking the back off and powering up.

RCA TV ITC008

Reason for Service: Shuts down

Solution: Replacing the following fixed the set:  IF001, DI012 & RI012.

Samsung LCD TV, LTN1535

Reason for Service: Dead

Solution: Found C109 bad; replacing fixed the
set.  1000uF/16V

Sony TV, KDL46NX700

Reason for Service:  Dead, relay clicks, gives a two blink code

Solution: 
Replaced the following in the power supply:  Q6101 & Q6102, used NTE2903 and fusible
resistor R6536 open.  0.47ohm/one half W.

Vizio TV, 
SV420XVT1A

Reason for Service: At power on, emblem turns
white, backlight starts to light, then shuts down

Solution: Found 25V line low and bad cap C241,
470uF/35V.