Tag - LG TV repair

CE Tech Tips — October 2021

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.

 

Coby TV, TFTV3227

Reason for Service: Loses video intermittently
Solution: We found a ground wire that was supposed to be screwed to the metal frame, had no screw.
Replacing the screw fixed the set.

LG TV, 50PC5D
Reason for Service: The screen had many red horizontal lines across the top part of it.
Solution: Replacing the upper buffer restored a good picture.

LG TV, 32LC7D
Reason for Service: Left side of the screen it too dark.
Solution: Found two bad caps on the inverter board, C215 and C218, 270uF/10V.

Samsung TV, LN-S2641
Reason for Service: Set won’t start.
Solution: Replacing the main board fixed this set.

Samsung TV, LN26A450C1DXZA

Reason for Service: Dead set.
Solution: Found and replaced bad regulator on main Board, IC1001. Check power supply for domed caps also.

Sharp TV, LC-52E77EU
Reason for Service: Set won’t start, power light blinking.
Solution: Replacing main board fixed the set.

Sony TV, KDL55W802A
Reason for Service: Set won’t start, 2 blink error.
Solution: Found and replaced 2 bad transistors in the power supply, Q6502 and Q6503. In addition, R6547 was bad, 0.1ohm/5W.

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CE Tech Tips — August 2021

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.

LG TV, 50PJ350-UB
Reason for Service
: Set starts for a second then shuts off.
Solution: Check/Replace R927 & R929, both 22 ohm/5W.

LG TV, 50PC1DR
Reason for Service: Dead set, 2 blink error.
Solution: Found Q855 in power supply shorted. SD20N60.

Panasonic TV, TH58PX600U
Reason for Service: Dead set,10 blink error.
Solution: Replacing PA board fixed set. 

Samsung TV, PN51D550C1
Reason for Service: Six blink code when set plugged in,
but will not turn on.
Solution: Found bad Y main, then found shorted C5020
on Y main.  Replaced C5020.

 

 

Samsung TV, UN55FH6030FXZA
Reason for Service: Backlight flickers. Cleaned cable ends, no improvement.
Solution: Replacing power supply fixed set.

Sharp TV, LC-60LE600U
Reason for Service: Set will turn on with no picture, sound or backlights.
Solution: First check for bad solder to LED strips.

Vizio TV, VO47L FHDTV10A
Reason for Service: No backlights, audio okay.
Solution: Replaced following: C241, 470uF/35V in power supply, C2 & C3 both 680uF/35V on master inverter board plus 10A fuse F1, and C102 & C103, both 680uF/35V on slave inverter board.

Vizio TV, E401i-A2
Reason for Service
: No backlights.
Solution: Replacing LED driver board fixed set.

 

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CE Tech Tips — July 2021

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.

Hisense TV, 50K360G
Reason for Service: Has audio and backlight, but no picture.
Solution: Replaced T-Con. 

LG TV, 32LX1D
Reason for Service: Dead set
Solution: Replacing C127 and C127 restored normal operation.

Panasonic Combo, PVDM2791
Reason for Service: No vertical
Solution: Replaced the following: U451, LA7331, C401, 2.2uF/50V, C402, 470uF/16V, C408, 1uF/50V, and C409, 100uF/35V.

Samsung plasma, HP-R4252
Reason for Service: Picture has red dotted horizontal lines
over 3/4 of the screen.
Solution: Replacing both lower and upper buffers fixed the set.

 

Sony TV, KDL55EX710
Reason for Service: Set shuts down a couple of hours after turning on. 7 blink error.
Solution: Ensure set has good ventilation; might have to replace BAL board.

Vizio TV, E370VLE
Reason for Service: Set won’t start. Logo changes from amber to white, but no B/L, no sound.
Solution: Found D120 on power board was shorted. Used MUR460.

 Vizio TV, M470NV
Reason for Service: Unit powers on, logo goes white then back to amber and set never starts.
Solution: Reflowing U9 on main board fixed the set. 

Westinghouse TV, DW37H1G1
Reason for Service: Set just keeps cycling the colors and will not turn off.
Solution: Unplug set, hold MENU button down while plugging set back in.

 

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CE Tech Tips — June 2021

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is 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, L32A403
Reason for Service: Set comes on, works okay for an hour then panel shuts
off; sound and other functions work. Turning the TV off, then back on,
set works again for an hour then repeats.
Solution: Replacing inverter board assembly fixed the set. 

Hitachi TV, 57F59A
Reason for Service
: No video or weak video. No voltage on the
ABL pin of the fly.
Solution: Replaced open RH28. 

Hitachi TV, 57F59A
Reason for Service: HDMI issues, changes colors, snowy picture,
loss of one or more colors, all white, shuts down.
Solution: Replace Signal Board and make sure software
Hitversion is V201 or higher. 

LG TV, 60LS5750
Reason for Service: After set is on for a few minutes, screen has
many red vertical lines, then picture turns off, but audio remains.
Fix: Replacing T-Con fixed the set.

 

Panasonic TV, TC-32LX85
Reason for Service
: No power.
Solution: Found bad photo opto in power supply. PC7000.

Samsung TV, UN40F5500
Reason for Service:
Dead, 2 blink error code.
Solution: Found SM RS802 that feeds the opto was open. Replacing fixed the set. 10 ohm. 

Sony TV, KDL-40V4100
Reason for Service: No video.
Solution: No 12V to T-Con. Replaced U21, (AS15F) on T-Con and replaced F1422/1421 on BU Board.

Sony TV, KV40XBR800
Reason for Service: Dead set.
Solution: Replacing relay RY6502 fixed the set.

 

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CE Tech Tips — May 2021

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.

Dynex TV, DX40L150A11
Reason for Service: Backlights come on briefly, then screen goes black.
Solution: Replacing inverter module restored normal operation. 

Emerson TV, LC-320EM2A
Reason for Service
: When pushing power button, there is a high pitch
squeal and blinking blue power light.
Solution: Replaced shorted D633 in power supply. 27V/1W. 

LG TV, 47LH40UA AUSVVLHR
Reason for Service: Dead set.
Solution: Found bad Opto in power supply, PC502; replacing it fixed the set. 

LG TV, 50PA4500
Reason for Service: Power button or remote will not turn set on.
Solution: Found bad cap in power supply, C802. Replacing it fixed the set. 0.022mF/1600V

 

Samsung TV, LN32B360C5d
Reason for Service: Set turns on one time at plug in, then won’t turn on again unless it is unplugged first.
Solution: Repairing bad tab on power supply board used for CCFL tubes fixed set. 

Sony TV, KDL40Z4100
Reason for Service: Dead, no standby.
Solution: On power supply board found shorted IC6101 and an open R6127, 10 ohm/Fusible.

Sony TV, KDL40V4100
Reason for Service
: Dead set, no standby.
Solution: Replacing Fusible resistor R6200, (10 ohm/half W) and IC6200 restored normal operation.

Vizio TV, M420NV
Reason for Service
: Set had no video, but sound was okay.
Solution: Installing eeprom kit fixed the set.

 

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CE Tech Tips — July 2020

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is 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, 60SX2K
Reason for Service: No color
Solution: Replaced leaky 2D-7004.

LG TV, 37LG10-UM
Reason for Service: Picture was washed out.
Solution: Replaced U202 on the T-Con board.  AS15-U.

Onkyo Recriver, TXSV727
Reason for Service: Unit in protect mode
Solution: Replaced Q615, Q621, Q623 and R639, 2.2k ohm.

Panasonic TV, TC50PX24
Reason for Service: Shutdown,10 blink error
Solution: Replaced SS module.

Sanyo TV, DP47460
Reason for Service: Dead set
Solution: Found and replaced bad IC601 on power board. A6051M.

Samsung TV, PN58C6400TFXZA
Reason for Service: Set has audio but no video.
Solution: Replaced Q5006 and Q5008 on main board.

Sony TV, KDL46W4100
Reason for Service: Backlight comes on then shuts off in short time. Error 14 blinks.
Solution: Replaced LCD controller.

Vizio TV, E601i-A3E
Reason for Service: Remote and replacement not working, but front panel buttons work fine.
Solution: Found leaky SM cap off vcc leg of I.R. diode.

 



CE Tech Tips — June 2020

**NOTICE**
Due to the danger and complexity of electronic equipment repair, the following technical tip is intended for professional reference only. Please refer to manufacturer’s recommendations as Encompass does not guarantee the accuracy, reliability or safety of this information.

LG TV, 47LE5500
Reason for Service: Set seems to start with white LCDs flashing, backlight comes on but no audio or video.
Solution: Replacing main board fixed set.

LG Plasma TV, 60PK750
Reason for Service: Set powers up normally with two clicks when you turn it on, but if you turn it off and back on again, set won’t come on. Red LED blinking.
Solution: Replace cable between main and power board.  EAD60958306

Polaroid TV, FLM323B
Reason for Service: Dead set.
Solution: Replace all caps in power supply and under heatsinks.

Samsung TV, LN32D430G3DXZA
Reason for Service:  Backlights not coming on, audio okay.
Solution: Power supply had some distressed areas from excessive heat; replaced entire module.  BN44-00438B

Samsung TV, HL67A750A1FXZA
Reason for Service: Set shuts down and 3 LEDs blink in the front.
Solution: Replacing LED driver board fixed set.

Sony TV, KDL55HX729
Reason for Service: Won’t power up, 2 blink error code.
Solution: Check and replace as necessary:  Q6602 & Q6603 on secondary power board and R6540 on main power board.  0.1 ohm/2W

Vizio TV, GV47LFHDTV10A
Reason for Service: At turn on, relay clicks and then clicks again in a few seconds. All yellow LEDs on set front are on, and you can only turn off by unplugging set.
Solution: Check for open 1.5A fuse on main board or check U5.  AMC1117