Tag - tv repair

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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CE Tech Tips — February 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, 53SDX01B
Reason for Service: When set turns on, screen is black except for OSD.  Channels changing constantly if you can see them.
Solution: Replaced defective DM04 on control board.

LG TV, 47LE5400
Reason for Service: Set won’t start past LG Splash logo. No buttons work.
Solution: Removed large plastic heatsink and then reflowed large IC on main board.

RCA TV, HD50LPW175
Reason for Service: FPD lights up, then blinks five times, and nothing further happens.
Solution: Check all following caps in power supply: C624, C639, C641, C647 and C640.

Samsung TV, LNT3242HX/XAA
Reason for Service: Dead set, has 5V standby.
Solution: Replaced RM801 in power supply.  0.22W/1W

Samsung TV, LN46A550P3F
Reason for Service: Set makes screeching noise then shuts off.
Solution: Replaced C102, SM 47uF/6.3V Blue box cap.

Sony TV, KDL32L504
Reason for Service: Dead set.
Solution: Found bad IC6102 bad; replaced with Sony 670880101.

Viore TV, LC37VF55
Reason for Service: Set had bad picture, almost like solarized.
Solution: Replacing AS15-F on T-Con fixed set.




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CE Tech Tips — January 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, 57F59A
Reason for Service: Vertical distortion at bottom of picture, or Q777 has failed.
Solution: Install deflection Kit X480315. 

LG TV, 47LG50
Reason for Service: Dead, F101 open.
Solution: Found and replaced shorted mosfet in power supply, Q502.  Replacing this and fuse restored normal operation. 

Mitsubishi TV, VS6071
Reason for Service: No vertical.
Solution: Replacing vertical IC fixed set. LA7838S

Samsung TV, UN60F6350AFXZA
Reason for Service: TV will randomly cycle on and off; gets progressively worse.
Solution: Update firmware, and disconnect Wi-Fi module to see if problem goes away.  If so, replace Wi-Fi module.

Samsung TV, LN46C600F3F
Reason for Service: Set powers up with sound, but no backlight.
Solution: Found open cap in power supply, C818, 0.47uF/450V.  Replacing this fixed set.

Sony TV, KDL-26M4000
Reason for Service: Dead
Solution: Replaced cracked IC902, #670889101, and open R904.  10ohm/half W.

Toshiba TV, 46XV645U
Reason for Service: Dead, no power.
Solution: Replaced open R850 in power supply (1.8ohm/5W) and relay.  23146564X.


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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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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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CE Tech Tips — October 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.

Emerson TV, LF501EM4
Reason for Service: Dead set, no standby power light.
Solution: Removed the I/R board and found SM C4056 shorted.  Removing bad cap restored normal operation to the set.

Hitachi TV, 57F59A
Reason for Service: Changes colors, snowy picture, loss of one or more colors, all white and shuts down.
Solution: Replace signal board and make sure the firmware is updated. 

LG TV, 47LM6700
Reason for Service: Dead, 3 blink error.
Solution: Replaced a shorted D607.  MUR460

Panasonic TV, TCP42X5
Reason for Service: Dead
Fix: Replaced U203 on backside of Power board.  FAN6755UWMY.

RCA TV, LED46C45RQ
Reason for Service: Set won’t power up.
Solution: Replacing the EEPROM fixed the set.  U16

Samsung TV, PN64E8000GFXZA
Reason for Service: Dead set, fuse blown.
Solution: Repaired power board by replacing QS802 & QS804.  Examine whole board for bad solder and resolder as necessary.

Vizio TV, E390-A1
Reason for Service: LED backlights will not come on.
Solution: Replacing IC U403 fixed the set.

Zenith, 9-1302 module
Reason for Service: Dead, nothing.
Solution: Resoldered jumper next to Elect Cap CX3452.  Fixed set.

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CE Tech Tips — September 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: Red convergence no good, can’t adjust.
Fix: Replaced IC-1301 and checked R1303, R1304, R1313, R1314.

LG TV, 32LC70
Reason for Service: Turns on and off intermittently.
Solution: Replacing cable from power supply to the main fixed set. EAD60958303

LG TV, 32LG3DC
Reason for Service: No picture, sounds works intermittently.
Solution: Replacing Q709 fixed set.

Pioneer TV, PRO506PU and Media Receiver, PROR06U
Reason for Service: Shuts down with 12 blink error on media receiver.
Solution: From Pioneer: Replace MR DTB Assy in media receiver.  #-AWE1305

Samsung TV, UN40C5000QF
Reason for Service: Set won’t start, 6 blink error code.
Solution: Replaced audio IC1202 on main board.

Samsung TV, HPS5073X
Reason for Service: If set is cool, takes longer and longer to turn on – as much as 15 minutes.
Solution: Replaced caps in power supply. CS856, CS846

Sylvania TV, LD320SS1
Reason for Service: While watching set, started flashing colored screens, couldn’t stop even by unplugging. When set started up again, had same problem: Test mode.
Solution: With set on, press left arrow then right arrow on the remote to exit.  Some sets you have to press up arrow then down arrow.





CE Tech Tips –August 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.

Hisense TV, 48H5
Reason for Service: Dead
Solution: Found couple of shorted diodes on power board, replaced whole power board.

Hitachi TV, 53SDX01B
Reason for Service: HV comes up, then set shuts down
Solution: Pin 1 of ip01 was 0 volts because dp14 was leaky. Replacing fixed set.

Magnavox TV, 47MF437B
Reason for Service: At power on, set chirps but will not start.
Solution: Replaced several bulged caps and Z902 and Z904 were defective.  P6KE120A.  Replacing these fixed the set.

Philips TV, 46PFL3908/F7
Reason for Service: Erratic operation
Solution: Bulletin: Check pin 4 of CN3105 on digital main board for 3.3 V with no keys on function board pressed. If voltage less than 3.3V, unplug keyboard from IR board.  If voltage returns to 3.3V, replace function board. If it does not, unplug CN3105.  If voltage returns to 3.3V, replace IR board. If problem continues, replace digital main board.

Samsung TV, LN40A500T1FXZA
Reason for Service: Power cycles with audible screech sound
Solution: Replaced C102.  47uF/6.3V ceramic, surface mount, blue box.

Toshiba TV, 46XV640U
Reason for Service: No video or OSD, but audio and backlights work
Solution: Found bad SM cap on main board,  C606, 22uF/16V.

Westinghouse TV, EW32S5KW
Reason for Service: Cycling red, green, blue, black. Can’t turn set off.
Solution: Set in test mode.  Press Exit on original remote.




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