Power Supply Board




LG LED LCD TV POWER SUPPLY BOARD PART EAY62851301 60LA6230 LA7410 LN6540 LN5710
LG LED LCD TV POWER SUPPLY BOARD PART EAY62851301 60LA6230 LA7410 LN6540 LN5710
$62.75
Time Remaining: 5d 11h 34m
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ETX2MM812MDS PANASONIC PLASMA TV POWER SUPPLY BOARD PCB PART TH P58VT20A
ETX2MM812MDS PANASONIC PLASMA TV POWER SUPPLY BOARD PCB PART TH P58VT20A
$73.35
Time Remaining: 24d 17h 25m
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NEW EAY62811001 POWER SUPPLY BOARD FOR LG LED TV 55LA6620 LA6910 LA7400 LA8600
NEW EAY62811001 POWER SUPPLY BOARD FOR LG LED TV 55LA6620 LA6910 LA7400 LA8600
$56.23
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Main board Power Supply for Samsung LN46B540 TV 46 Television Works Perfectly
Main board Power Supply for Samsung LN46B540 TV 46 Television Works Perfectly
$39.00
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Samsung BN44 00279A PLASMA TV Power Supply BOARD PS58B850 PART
Samsung BN44 00279A PLASMA TV Power Supply BOARD PS58B850 PART
$105.90
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SAMSUNG BN44 00526A LED TV POWER SUPPLY BOARD FOR UA60ES8000MXXY
SAMSUNG BN44 00526A LED TV POWER SUPPLY BOARD FOR UA60ES8000MXXY
$89.64
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Insignia Power Supply Board NS 50L440NA14 AY158P 4HF03 890
Insignia Power Supply Board NS 50L440NA14 AY158P 4HF03 890
$50.00
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ETX2MM747MFF PANASONIC PLASMA TV POWER SUPPLY BOARD PCB SPARE PART TH P42G10A
ETX2MM747MFF PANASONIC PLASMA TV POWER SUPPLY BOARD PCB SPARE PART TH P42G10A
$146.69
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ETXMM563MDK PANASONIC PLASMA TV POWER SUPPLY BOARD PCB TH 42PV500A SPARE PART
ETXMM563MDK PANASONIC PLASMA TV POWER SUPPLY BOARD PCB TH 42PV500A SPARE PART
$183.36
Time Remaining: 24d 16h 55m
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Zitrades MB102 Breadboard Power Supply Module 3.3V/5V For Arduino Board Solderless Breadboard Zitrades MB102 Breadboard Power Supply Module 3.3V/5V For Arduino Board Solderless Breadboard
Sale Price: $0.99

Package Content : 1 x Breadboard Power Supply Module 1 x ZITRADES glass cleaning cloth

AGPtek® NEW 10 Isolated Output 9V 12V 18V Guitar Effect Pedal Power Supply AGPtek® NEW 10 Isolated Output 9V 12V 18V Guitar Effect Pedal Power Supply
Sale Price: $36.59

Caline CP-05 10 Isolated Output 9V 12V 18V Guitar Effect Pedals Power Supply. PART NAMES AND FUNCTIONS 1.Switch for LED lights:Turn the switch towards those LED lights,normally all lights would go on after the power is connected...

Altronix SMP3 Power Supply/Charger Board with Single Output, 6/12/24 VDC, 2.5 Amps (Pack of 1) Altronix SMP3 Power Supply/Charger Board with Single Output, 6/12/24 VDC, 2.5 Amps (Pack of 1)
List Price: $48.13
Sale Price: $27.48

Altronix SMP3 Proprietary Power Supply SMP3 224

Gator Pedal Board Power Supply (G-BUS-8-US) Gator Pedal Board Power Supply (G-BUS-8-US)
List Price: $149.99
Sale Price: Too low to display

1700 Milliamp Regulated 9V & 18V Multi-Output DC Power Source for Pedals

HDE 20+4 Pin LCD Power Supply Tester for ATX, ITX, BTX, PCI-E, SATA, HDD HDE 20+4 Pin LCD Power Supply Tester for ATX, ITX, BTX, PCI-E, SATA, HDD
List Price: $26.99
Sale Price: $8.25

Test your power supply and avoid damage to your expensive computer equipment with this ATX power supply tester. Simple and easy to use, no batteries are needed. Connect to the power supply's 20-pin Molex connector...

UpBright® NEW AC / DC Adapter For SPORTCRAFT D9300 Plug In Class 2 Transformer Dart Board Power Supply Cord Cable PS Wall Home Charger Mains PSU UpBright® NEW AC / DC Adapter For SPORTCRAFT D9300 Plug In Class 2 Transformer Dart Board Power Supply Cord Cable PS Wall Home Charger Mains PSU
Sale Price: $17.99

UpBright® NEW AC / DC Adapter For SPORTCRAFT D9300 Plug In Class 2 Transformer Dart Board Power Supply Cord Cable PS Wall Home Charger Mains PSU CECCCROHS 100-240

Arrela® MB102 Solderless Breadboard Power Supply Module Jumper cable Kits for Arduino Project Arrela® MB102 Solderless Breadboard Power Supply Module Jumper cable Kits for Arduino Project
Sale Price: $10.47

1 X MB-102 MB102 PCB Prototype Bread Board Solderless Breadboard 830 Points 1 X MB102 Breadboard Power Supply Module Board 3.3/5V 30 male-male jumper wires of various lengths and colors BreadBoard-830 is a solderless (plug-in) breadboard with 830 connection tie-points (i...

JBtek® Breadboard Power Supply Module 3.3V/5V For Arduino Board Solderless Breadboard JBtek® Breadboard Power Supply Module 3.3V/5V For Arduino Board Solderless Breadboard
Sale Price: $5.99

For MB102 bread board, two way independent control, Can be switched to 0V, 3.3V, 5V. On-board Two sets of 3.3V, 5V DC output pins, Facilitate the external leads. A plastic lens is used for high sensitivity...

AE-SELECT Replacement Part BN44-00496A TV Power Supply / LED Board for SAMSUNG AE-SELECT Replacement Part BN44-00496A TV Power Supply / LED Board for SAMSUNG
Sale Price: $18.95

New Samsung BN44-00496A UN40EH5050FXZA HG40NA570LFXZA TV Power Supply Board

Samsung Power Supply / LED Board BN44-00499A Samsung Power Supply / LED Board BN44-00499A
Sale Price: $85.42
Used From: $15.99

This BN44-00499A is a Genuine New Samsung PCB, Power Supply, LED TV PD BD, PD55AV1_CHS,

Power Supply Board
Power Supply Board

Repair LCD Power Supply The Easy Way

Troubleshooting LCD monitor power supply pack is easier than the crt monitor power supply. It is small and compact and usually has only one output which is 12 volt and range from 2 ampere to over 4 ampere. Some designed have 18 and 24 volts also. Nowadays most LCD power supplies are build into the main board such as the Dell E151FP LCD Monitor while the older type were separated as power pack module.

The power pack module type is easy to diagnose because you can replace another working unit just to make sure is the power pack that giving problem. You may also use an external dc power supply to power up the LCD to confirm if the power pack is faulty. If you do not have the external dc power supply, you can always use this method to isolate the problem especially the symptoms are no power, low power and power blink. Using the rear light bulb (12 volt) from a car and connect it to the power pack output jack. If it light brightly then the power pack is okay. If it blink or dim the power pack have problem. Why have to use this method to test it? Because, if there are components shorted or leaky at the LCD main board, it will affect the power supply performance.

From experienced, most of the LCD power supply problems whether in the power pack or built into main board were due to the failure of electrolytic capacitors (most probably due to heat) in the primary and secondary section. Most of the capacitors have a high ESR which causes the power supply to produce low output, blink or no power at all. Typical value electrolytic capacitors in the primary side are 47 and 100 micro farad 50 Volt and the secondary sides are 1000 to 2200 micro farad 25 volt. Sometimes you can see the capacitor top casing became bulge and the sleeve that covered the capacitor casing turned into darker color like brownish.

The power section in some of the LCD screen are still using the UC3842 pulse width modulation (pwm) ic. This type of ic is quite easy to find in the market compare to some power ic which is very difficult to get. Samsung 153V LCD monitor is using the TOP247F power ic which is quite easy to troubleshoot if power fail in this model. Some power pack that came in only have minor burnt and after cleaning it and replaced the fuse, it will work as good as the new one.

Troubleshooting LCD power supply is not that difficult provided if you know how a power supply work. If you are unsure of how to troubleshoot power supply, I urge you to read all my power supply articles at the power supply page. I will continue to post more power supplies articles at that page and hope you could drop by more often to check out my website.

About the Author

Find out more at the links below. You will be very surprised to discover that LCD and Electronic Component Repairs can make thousands of dollars even for a novice. You can find out the repairing secrets.

Find out How to Repair Any LCD Monitor - It is a breeze!

Learn about Secrets of Electronic Repairs.