Tag - Vizio TV repair

12 Mar

CE Tech Tips — March 2023

**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, 53FDX20B
Reason for Service: Weak or washed out color when OSD color adjusted.
Solution: Found and replaced shorted ZD-306.

LG TV, 50PS60UA
Reason for Service: Bottom half of picture is black.
Solution: Replacing lower buffer fixed set. 

Samsung UN60EH6000F
Reason for Service: Backlights come for just a second, then go back off.
Solution: Replacing power board fixed set. Saw some bad caps on power board.

Samsung TV, LN52B530P7FXZA
Reason for Service: Sound okay, but no picture.
Solution: Replace C1804, (box cap) on IP board. 684k/400V.

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Sharp TV, LC60C8470U
Reason for Service: Error code, two long, two short.
Solution: Found bad 4 pin regulator Q7120 under heat sink. Replacing fixed set.

Sony TV, KDS60A2000
Reason for Service: Dead set, five blink code.
Solution: Replacing ballast fixed set.

Vizio TV, M471I-A2
Reason for Service: Dead set.
Solution: Found and replaced shorted diode in power supply. D950.

Vizio TV, E320-A0
Reason for Service: Dead set.
Solution: Found open SM 5A fuse on mother board, and one of three ceramic caps near fuse was shorted to ground. Removed cap.

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03 Feb

CE Tech Tips — February 2023

**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, 53FDX20B
Reason for Service: Weak or washed out color when OSD color adjusted.
Solution: Found and replaced shorted ZD-306.

LG TV, 50PS60UA
Reason for Service: Bottom half of picture is black.
Solution: Replacing lower buffer fixed set. 

Samsung UN60EH6000F
Reason for Service: Backlights come for just a second, then go back off.
Solution: Replacing power board fixed set. Saw some bad caps on power board.

Samsung TV, LN52B530P7FXZA
Reason for Service: Sound okay, but no picture.
Solution: Replace C1804, (box cap) on IP board. 684k/400V.

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Sharp TV, LC60C8470U
Reason for Service: Error code, two long, two short.
Solution: Found bad 4 pin regulator Q7120 under heat sink. Replacing fixed set.

Sony TV, KDS60A2000
Reason for Service: Dead set, five blink code.
Solution: Replacing ballast fixed set.

Vizio TV, M471I-A2
Reason for Service: Dead set.
Solution: Found and replaced shorted diode in power supply. D950.

Vizio TV, E320-A0
Reason for Service: Dead set.
Solution: Found open SM 5A fuse on mother board, and one of three ceramic caps near fuse was shorted to ground. Removed cap.

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11 Nov

CE Tech Tips — November 2022

**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.

Samsung TV, HP-T5054
Reason for service: Panel doesn’t prime, but audio okay.
Solution: Replaced two FET’s on Y-board: Q5303 and Q5304. 

Samsung, LNT3232HX/XAA
Reason for Service: Backlights not working, but sound Ok.
Solution: Replaced 4 bad caps in power supply, CM851, CM852, CM856, CM858 and bad fuse F3 on inverter board.

Samsung TV, UN40JU6400
Reason for service: No video or audio and no backlight.
Solution: Found shorted cap off pin 8 of IC304. Just removed cap.

Samsung, UN46H6201AF
Reason for Service: Set has no video, but audio and backlight are okay.
Solution: Replaced  T-Con board.

Sony TV, RA6
Reason for service: Dead set, 6 blink error.
Solution: Found D5004 on G board shorted.

Toshiba TV, 32TL515U
Reason for Service: No audio.
Solution: Reflowing BGA on main restored audio. IC100

Vizio, E550VL
Reason for Service: Has amber logo, but won’t turn on.
Solution: Replacing IC U14 fixed set.

Vizio TV, E422VA
Reason for service: No video or audio.
Solution: Reflowing BGA on main fixed set. U401

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06 Oct

CE Tech Tips — October 2022

**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, LTDN46V86US
Reason for Service: Set won’t start, intermittently.
Solution: Found 3 bad caps on the power board, C811, C812 and C814.

LG TV, 42LG50
Reason for Service: Picture was solarized.
Solution: Found and replaced bad U21 on the T-Con Bd. AS15F.

LG TV, 60PV400UB
Reason for Service: Power comes on, but set doesn’t prime.
Solution: Repaired Z-Sus module by replacing a leaky C418 chip cap and three 10ohm resistors R430, R439 and R517.

LG TV, 60PV400
Reason for Service: Set powers on, but no prime.
Solution: Replaced following on Z-Sus module: R439, R517 R430, all 10ohm chip and C418.

RCA LED52B45RQ
Reason for Service: Dead, but red LED blinks once when power button pressed.
Solution: Found bad cap on power supply board, C14, 47uF.

Samsung TV, PN60E530A3FXZA
Reason for Service: Doesn’t prime, no video or picture.
Solution: Replaced ceramic caps with 10uF/63V electrolytics. C5160, C5162 and C5046. 

Sanyo TV, FW65D25T
Reason for Service: No video, audio is okay.
Solution: Replacing FRC board fixed set. 

Vizio TV, XVT3D474SV
Reason for Service: Set will not start. Amber logo, but doesn’t change to white.
Solution: Reflowing the BGA on main board fixed the set. U9

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13 Sep

CE Tech Tips — September 2022

**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.

Insignia TV, NS-LCD47HD-09
Reason for Service: No video, B/Ls okay.
Solution: Replacing U507 on main board fixed the set (was running very hot).

LG TV, 42LG50
Reason for Service: Picture solarized.
Solution: Found and replaced bad U21 on T-Con Bd. AS15F.

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

Protron TV, PLTV-32CM
Reason for Service: Audio volume low and distorted.
Solution: Replacing two bad caps on main fixed set. CE6 and CE7, 100uF/16V.

RCA TV, RLDED5078A-D
Reason for Service: No video or OSD.
Solution: Replaced open fuse on T-Con, 3A.

Samsung LN-T2342H
Reason for Service: Dead set.
Solution: Found bad zener in power supply, DZB803.

Sylvania TV, 6432TFY
Reason for Service: Dead set, may chirp.
Solution: Found bad D653; replaced, 18V zener.

Vizio TV, E420VA
Reason for Service: Dead set.
Solution: Replaced small blue cap in power supply, C911, .01uF/1KV and F901, 5A fuse.

Vizio, VW42L
Reason for Service: Backlights strobing and making buzzing noise.
Solution: Replaced C421 in power supply and two 470mF/35V on master and slave inverter boards.

 

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09 Aug

CE Tech Tips — August 2022

**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.

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

Samsung TV, PN64D7000FF
Reason for Service: Dead set, no standby power light
Solution: Found bad solder on TS801S and TS802S in the power supply and resoldered.

Samsung TV, LN52A650A1F
Reason for Service: Set cycling.
Solution: Replaced C132 on main board with 47uF/16V electrolytic.

Vizio TV, E420VA
Reason for Service: Dead set.
Solution: Replaced small blue cap in power supply, C911, .01uF/1KV and F901, 5A fuse.

Vizio TV, D58U-D3
Reason for Service: Screen has bluish color.
Solution: Replaced all LED strips, which restored normal picture.

Vizio TV, SV422XVT
Reason for Service: Set won’t start.
Solution: When you plug in set, logo is amber and never turns white. Reflowing both BGAs under heatsinks on main board fixed problem.

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, 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.

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29 Jun

CE Tech Tips — June 2022

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


LG TV, 55GA6400
 Reason for Service: Set has no audio.
Solution: Reflowing BGA on main board fixed set. IC100.

LG TV, 47LW5600
Reason for Service: Picture has horizontal lines across whole screen.
Solution: Reflowing BGA on main fixed set. IC101.

LG TV, 50PA4500
Reason for Service: Power button or remote will not turn set on.
Solution: Found bad cap in power supply, C802; replacing fixed set. .022mF/1600V

Mitsubishi TV, WDY57
Reason for Service: Set shuts off.
Solution: Cleaned filters and replaced sensor behind lamp.

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

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.

Vizio TV, M552i-B2
Reason for Service: Dead set, power light doesn’t appear at power on.
Solution: IC901, ZD909, 4.7Vzener, D950B.

Vizio TV, E420VA
Reason for Service: Dead set.
Solution: Replaced small blue cap in power supply, C911, .01uF/1KV and F901, 5A fuse.

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18 May

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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07 Dec

CE Tech Tips — December 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, 57S710S
Reason for Service: Using HDMI connection,
black picture with no Sync on OCD.
Solution: Clean HDMI jack with 99.8% isopropyl alcohol.

JVC TV, JLC32BC3002
Reason for Service: When set turned on, JVC logo appears,
then sound but no backlights.
Solution: Found shorted D602 on power supply board. MUR460

LG TV, 32LP1DC
Reason for Service: No audio
Solution: Replaced main board.

Samsung TV, PN64D80000FF
Reason for Service: Relay clicks on and off.
Solution: Resoldered TS801s and TC802s on power board.

Samsung TV, LN46C550JIFXZA
Reason for Service:  Set won’t come on, red LED blinks continuously.
Solution: Disconnect LVDS cable; if set comes on with melody, it’s either bad T-con or panel. Reconnect LVDS and unplug cables from T-Con to panel. If set comes on, panel is bad.

Sanyo TV, DP50749
Reason for Service: Power cycles on and off.
Solution: Replaced IC5750 on main board.

Sony TV, KDL46V2500
Reason for Service: Dead set, four red blink error.
Solution: Check all inverter transformers and their associated sm resistors.


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10 Nov

CE Tech Tips — November 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, 47LS4500-UD
Reason for Service: No picture and no backlight.
Solution: Found D607 shorted in the power supply.  MUR460AX

Samsung TV, PN51D6500D
Reason for Service: Set shuts down, or clicks on and off, has picture and splash screen every 5 or 6 seconds.
Solution: Replacing main board fixed this set. BN94-04728A

Samsung TV, LN40A500T1FXZA
Reason for Service: Set comes on, then as it warms up, picture problems, then shuts down.
Solution: Check for bad caps, C102 and C131 on main. 

Sharp TV, LC60LE650U
Reason for Service: Dead set, no standby.
Solution: Replaced shorted IC7903, (A6069H), and opened R7900, 0.22 ohm fusible.

Sony TV, KDL46W4100
Reason for Service: Backlights come on, then turn off within few seconds with 14 blink error.
Solution: Found and replaced 7A open fuse on LCD controller module.

Toshiba TV, 32HL67U
Reason for Service: At turn on, screen lights up for second, then dims way down; sound okay.
Solution: Replacing T-Con fixed set.

Vizio TV, VP422HDTV10A
Reason for Service: Dead, no standby 5V or amber logo.
Solution: Found open cap in power supply, C8006.  22uF/450V.  Replacing fixed set.

 


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