Tag - emerson tv repair

22 Sep

CE Tech Tips — September 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.

Emerson TV, LC320EM2A
Reason for Service: Powers on with high pitched squeal
and blinking power light.
Solution: Found shorted diode in power supply. D633, 27V/1W. 

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

Panasonic TV, TH42PZ700U
Reason for Service: Dead, seven blink error.
Solution: On SC module look for row of SM FETs.
Check for shorts by lifting on leg of each. Q641-Q654

Samsung TV, UN55ES6100
Reason for Service: Set won’t connect to Internet.
Solution: Replacing the Wi-Fi module fixed set.

Samsung TV, LN55C750R2F
Reason for Service: Set intermittently had video, then went out all together.
Solution: Before replacing T-Con or main, sub crystal X11 from scrap set.  If no good, replace T-Con.

Samsung TV, PCL542R
Reason for Service: Dead set.
Solution: Replaced IC801, IC802 and IC806.

 Sharp TV, LC52D64U
Reason for Service: Dead set. F7000 blown.
Solution: Replaced Q7805, Q7808 and fuse to fix set.

 Sony TV, KV40XBR800
Reason for Service: Shuts down with 6 blink error.
Solution: Found and replaced bad cap C6556, 33uF/160V.

 

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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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05 Oct

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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