Tech Tips

CE Professional Tech Tip Sharing

July 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.

GE TV, Chassis TX81G

Reason for Service:  Dead, no high voltage.

Solution: Check
all and replace as necessary: CF09, DF04, DP18, TP15.

Hitachi TV, 43FWX20B

Reason for Service:  Freezing or any weird eeprom or micro
suspected problem

Solution: Add a
jumper from 1007 pin 1 to cathode of D019.

Hitachi TV, 46UX12B

Reason for Service: Loss
of audio

Solution: Replaced
shorted Q403 and Q404.

Mitsubishi TV, WS-655515

Reason for Service: No
power, LED blinks slow at plug in and does not stop blinking

Solution: Check
pin 3 of PC9A21for 12V; if low or missing, replace PC9A21 on main board.  #268P058020

Philips TV, 32MF605W/17

Reason for Service: Good
picture but no sound

Solution: VCC
for audio processor was missing. Replacing the supply regulator 7006, fixed the
set.  L78L08ACZ

RCA TV, CTC169

Reason for Service:  Vertical loss from top and bottom 3
inches of screen.

Solution:  Replaced 2 caps in vertical
circuit.  0.47uF/100V and 33uF/50v.  Check for bad solder in the same area.

Sanyo TV, DS31590

Reason for Service: 
Dead, fuse blown (lightning?)

Solution:  Replaced the following
parts:  Q601, Q604, Q605, D612 and the 4A
fuse.

Samsung DLP HLR4266WXXAA

Reason for Service: Picture
flickers

Solution: Replacing
the ballast fixed the set.

Samsung LNT4069FX/XAA

Reason for Service:  Picture flashes off and on, (backlight
problem)

Solution: Replace
ICM804 on power/inverter board, BN44-00167C.

Sony TV, KDFE50A10

Reason for Service:  Shutsdown and 6 blinks and relay
clicks.

Solution: Found
a bad cap in the power supply, C6049, 200uF/16V.

Sony LCD,  KDL40V4100

Reason for Service: Pic
too dark and color too rich.

Solution:  T-Con is bad, but before replacing, try
replacing just the AS15-F chip on it.  Do
a Google search to find the chip.

CE Professional Tech Tip Sharing

June 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.

GE TV, Chassis TX81G

Reason for Service: 
Dead, no high voltage

Solution: Check all and
replace as necessary: CF09, DF04, DP18 and TP15.

Hitachi TV, 43FWX20B

Reason for Service: Horz noise in picture when first turned on.

Solution: Wiggle the anode
connector at each CRT to determine if this causes the symptom, if so, replace
that lead.

Panasonic PT-47WX53

Reason for Service: 
No audio

Solution: Check and replace
as necessary: R881, R880 and D2321.

Philips TV, 21PT6446-44, L03.1LAA
Reason for Service:  Vertical
is shrinking down.
Solution: Replaced D6460 SM diode in vertical section, and check or
replace C2444 and C2465.

RCA TV, ATC221

Reason for Service: Convergence not working

Solution: Convergence power
supply not working because FP251 and FP221 were open.  Replacing fixed the set.

RCA TV, ITC222

Reason for Service: Set pulses 3 times then goes into shutdown

Solution: Check the ground
straps on the CRTs.  Make sure they are
not touching anything shorting out.

Sony TV, KPCX35

Reason for Service: 
Bright picture with no contrast

Solution: Found C650 on the
G board open.  100uF/160V.

Sony TV, KV32FS120

Reason for Service: 
Dead, 9 blink error code

Solution: Replacing D647
fixed the set.  #10ERB20, NTE125

Toshiba TV, 34HD82

Reason for Service: Picture was jagged jittery and sometimes more than one
picture side by side.

Solution:  Found many bad caps on the vertical mounted MVPU15 board
assy.  Replacing them fixed the set.

Vizio Plasma, P50HDTV20A

Reason for Service: 
Shuts down

Solution: Replace all the
following in the power supply:  C201,202,203,227,271,272,282
and 283.  Check 261, C275.  Measure voltage in and out of all the
regulators on the main board.  Replace
any found bad.

CE Professional Tech Tip Sharing

May 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, 50V500A

Reason for service:  Negative or reddish picture

Solution: Cleaned
or replaced the connector between flex and drive PCB.

Hitachi TV, 50V500A

Reason for service: Bars
in picture or screen

Solution: Suspect
50 pin connector, #EK01182, polarity or improper connections.

Hitachi TV, 46UX12B

Reason for service:  Intermittently looses channels.

Fix:  Replace defective ZD-008 and C0062.

JVC TV, AF32F703

Reason for service: Shutdown.

Solution: Resoldered
W624 jumper and replaced the following: 
C973, 10uF/50V, D432, and Q431.

Mitsubishi TV, CK-3136R

Reason for service: Dead,
just clicks

Solution:  Replaced all the following:  C901, STR-S5141G, Caps, C914, 470uF/50V,
C916, 10uF/100V, C956, 2.2uF/200V, then discovered the Q532, HOT was
shorted.  Replaced it and a 3.15micro fuse
and the set was fixed.

Panasonic TV, CT-36HX41E

Reason for service:  Intermittent shutdown

Solution: Replaced
R517 and C524.

Panasonic TV, TH42PX75U

Reason for service:  Video is intermittent on all inputs
after set is on for a while.  Audio, OK.

Solution: Clean
and reseat the LVDS cable between the main and control/logic boards.

RCA TV, ITC222

Reason for service:  Set chirps 3 times and shuts down.  No high voltage.

Solution: Flyback
LI008 bad.  If drawing number on fly is
107 56 Xxx, use 259296.  Otherwise use
265409.  Also replace TI-010, 2SC2588 and
DI-012, BYW34V, (244834) 

Sharp TV,  25RT59

Reason for service:  Jagged edges, Christmas tree effect.

Solution: Test
by installing a jumper from the cap at bridge diode output to the cathode of
125V SCR.  Bring set up on a variac.  If the jagged edges go away, replace IC701.   RH-IZ0073CEZZ

Sony TV, KVTS20

Reason for service: Black
screen but sound OK