Tag - hitachi tv repair

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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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.

l

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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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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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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CE Tech Tips — January 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, 60V500A
Reason for Service: Sound distortion (rattling sound) on speaker with action movie and bass set to max.
Solution: Replace side protector between woofer and power supply with new part MN06392. 

Samsung TV, LN46A530P1F
Reason for Service: No backlight, power supply comes up with all voltages.
Solution: Replaced main board to fix.

Samsung TV, UN55C6900VFXZA
Reason for Service: Dead set.
Solution: Replaced 2 components in power supply. ICB801 and ZDB802.

Samsung TV, UN40F6300
Reason for Service: Dead set, power LED 2 blink error.
Solution: Found bad SM cap, RS802, replacing fixed set.

Sanyo TV, DP42841
Reason for Service: Audio cuts out at high volume and crackles sometimes.
Solution: Replaced Audio IC LV4906.  

Zenith TV, P42W46X
Reason for Service: Black screen, slowly gets better the longer set is on.
Solution: Found C61 in power supply bad. 47uF/50V.

Zenith TV, Z50PG10UA
Reason for Service: No video or OSD, screen lights up.
Solution: Replacing upper buffer fixed this set.

 

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CE Tech Tips — December 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, 60V500A
Reason for Service: Sound distortion (rattling sound) on speaker with action movie and bass set to max.
Solution: Replace side protector between woofer and power supply with new part MN06392. 

Samsung TV, LN46A530P1F
Reason for Service: No backlight, power supply comes up with all voltages.
Solution: Replaced main board to fix.

Samsung TV, UN55C6900VFXZA
Reason for Service: Dead set.
Solution: Replaced 2 components in power supply. ICB801 and ZDB802.

Samsung TV, UN40F6300
Reason for Service: Dead set, power LED 2 blink error.
Solution: Found bad SM cap, RS802, replacing fixed set.

Sanyo TV, DP42841
Reason for Service: Audio cuts out at high volume and crackles sometimes.
Solution: Replaced Audio IC LV4906.  

Zenith TV, P42W46X
Reason for Service: Black screen, slowly gets better the longer set is on.
Solution: Found C61 in power supply bad. 47uF/50V.

Zenith TV, Z50PG10UA
Reason for Service: No video or OSD, screen lights up.
Solution: Replacing upper buffer fixed this 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 — April 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, 60SDX88B
Reason for Service: Picture displays a pin problem.
Solution: Replacing Q657 fixed this set.

Hitachi TV, 42HDS69
Reason for Service: Set just clicks when powered on.
Solution: Replaced two 3300uF/100V caps in power supply.

Insignia TV, NS42L780A12
Reason for Service: Set had good audio, but no picture because no backlight.
Solution: In the power supply, Q801 and Q802 were shorted, (had bad solder) and R801 was burned.  0.1ohm/2W.

Panasonic TV, TCP50X5
Reason for Service: Dead, may be intermittent.
Solution: Replaced U203 on back side of power supply.

 

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

Sony TV, KDL40V2500
Reason for Service: Right side of screen had video strobing; left side no video at all.  Audio okay.
Solution: Found 3 bad caps in power supply, C6204, C6205 and C6207.
Replacing these fixed the set.

Sylvania TV, LC190SL1
Reason for Service: Dead, fuse blown.
Solution: Replaced Q601, Q602, R610, 0.39Ω/2W and D607 zener. Also check D605, D606.

 

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CE Tech Tips — March 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, 60V500A
Reason for Service: Lamp LED blinking.
Solution: Check door lamp switch – boss on door or lamp assembly may not close switch. Apply tape to boss.

LG TV, 60PV250UB
Reason for Service: Set had no video, but audio okay.
Solution: Replaced Z-Sus and resoldered coils on Y-Sus.

Philips TV, 47PFL7403D/F7
Reason for Service: Dead set, no LED.
Solution: Found fuse open, U101 was shorted with black pin hole on top.  Also check for bad 120W resistor that feeds U101.

Samsung TV, PN51F8500AF
Reason for Service: Dead set, main fuse blown.
Solution: Found shorted transistor, QP804C on power board.  Replacing it and fuse fixed set.

Sanyo TV, DP42841
Reason for Service: Dead set, no standby.
Solution: Replaced R606 and IC601. STR-A6051M.

Sony TV, KDL40EX400
Reason for Service: Dead set with no standby.
Solution: Replaced following: IC6101, D6302, D6304 and R6107, 10ohm/1W.

Sony TV, KDL40SL140
Reason for Service: Dead set.
Solution: Set had no standby, fusible resistor R6200 open. 10ohm/half watt.

 

 

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