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Is the power board in an lcd monitor repairable?

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Yes, unless the CCFL inverters are bad, you'd be hard pressed getting replacements

Posted on May 15, 2010

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Acer AL1711 17" LCD Monitor showing white screen


Hello,

A white screen indicates the power supply board is not putting out the correct voltages to properly power the monitor, just the back light. This type of issue is caused by a failure of the filter capacitors on the power board. You can rebuild your power supply board and bring the monitor back to life by just replacing the the bad capacitors. The problem is that model the Acer AL1711 could come with 1 of 4 different power supply boards install depending and the date manufacturer and supply on hand. If you want to repair the monitor if you could open the unit and get either the model number of the power supply board or send a picture of the board to me I will be glad to help you repair the unit and get it back up and running. You can contact me to send the information at tech@ccl-la.com

Nov 30, 2012 | Acer AL1711 17" LCD Monitor

1 Answer

Dell stuck in power safe mode


A blinking power light is not indicating power safe mode, it indicates a failure of the power supply board in the monitor. Here is a link to repair guides that show how to open and repair the power supply boards in the Dell E173 series of monitors;

http://www.ccl-la.com/blog/index.php/category/monitor-repair/dell-monitor-repair/

I hope this helps,

Apr 08, 2012 | Dell E173FP 17" LCD Monitor

1 Answer

My L194WT -SF WONT WORK NO POWER USED SAME POWER LEAD ON DIFFERENT MONITOR NO PROBLEM


Hello Steve,

The most common problem with the L194WT monitors is a failure of the power supply board. There are parts called capacitors that fail and can cause the issue you have. Sometimes the power light will just flash, sometimes it takes several minutes to display a picture or even a wavy picture, all of these issues indicate a failing power supply board. These boards can be repaired if you can do a little soldering. The L194WT uses the same power board as the L196WTQ and we have a step by step repair guide with dis-assembly instructions available at http://www.ccl-la.com/blog/index.php/lg-l196wtq-bf-lcd-monitor-repair/ Look over the guide and check your board to see if your capacitors have bulged and need to be replaced.

I hope this helps, if so please rate our solution.

BuddyMc

Aug 07, 2011 | LG L194WT 19" LCD Monitor

1 Answer

CAN'T GET THE MONITOR OUT OF POWER SAVING MODE


Hello,

If you have a blinking power light and no display even when you first power up the unit then its not in power saving mode. The blinking power light indicates a failure of the filter capacitors on the power supply board. This is a very common problem with LCD monitors after a few years of service. The power supply can be repaired by just replacing the defective filter capacitors. Here is a picture of the power supply board with the bad caps circled in yellow and below that is a link to a full repair guide showing how to open the unit and what to replace including a full parts list.


9_24_2012_8_54_49_pm.jpg

http://www.ccl-la.com/blog/index.php/repairing-a-dell-1905fp-1907fp-lcd-monitor/

I hope this helps you out,
BuddyMc

Feb 11, 2011 | Dell UltraSharp 1905FP 19" LCD Monitor

1 Answer

The TV wont come on at all, the power source is good The model # is DP19648 Sanyo Is there a reset button on TV?


d cooper, Because your unit is small screen type, You should visit YOUTUBE and view video clips of cold cathode fluorescent lamp back-lit lcd computer monitors being repaired. Your unit is subject to the same type of internal "switch-mode-power-supply/CCFL inverter ballast" circuit problems as are lcd monitors. Search terms at youtube are: "lcd monitor disassembly" and "lcd monitor repair" Then look for and view lcd tv repair video clips. Inspect your unit for "bad" (failed) electrolytic filter capacitors on the AC to DC switch mode multiple output power supply board. May have "open" fuse inside near or on the smps board. If "open fuse" the next question is why??? 12fixlouie

Nov 09, 2010 | Televison & Video

1 Answer

Where can I buy a power supply for an AOC LCD monitor model TFT 1780?


hi, i don't know if you will ever find just the power supply board for this monitor. i repair lcd monitors for a side business and i have never found the exact power board i needed for any of the monitors except for dell 17in. you would have to look on ebay for another broken monitor just like your with a working power board, broken screen maybe. that being said, why do you think you need a power board complete? the parts on the board are replaceable. maybe you could post a reply so i can read to help with what the symptoms are and help you diagnose the problem components? if you posted pictures in your reply of both sides of the board, it might help me describe more in depth.

Mar 08, 2010 | AOC 1780 (Beige) 17 in. Flat Panel LCD...

1 Answer

Won't power up. Press power button, turns green then orange.


Good day sir/maam, Hi, If the LCD is under warranty, use it, they will replace the LCD monitor for free. If not, you may need spend for a Power supply board, to repair one.

There are two boards usually found on an LCD monitor, one main board that controls the LCD screen, back light, inverter, controls and sound. the second board is the power supply board, which accepts mains voltages 90v-240v AC and convert them to DC to power the entire monitor.
If however you may bring it to a repair shop or dealer, they will replace the power board, and there you go. the monitor is done.

Nov 24, 2009 | BenQ FP737S-D 17" LCD Monitor

1 Answer

How do you replace a power supply unit in a 1905fp Dell Moniter?


Here is a link to a full repair guide that shows how to open the unit remove the power supply and what components to replace to repair the board. Repairing the board is much cheaper than getting a new board. Below is also a picture of the board with the problem capacitors circled in yellow, these parts are the most common problem with the board.



http://www.ccl-la.com/blog/index.php/repairing-a-dell-1905fp-1907fp-lcd-monitor/
9_24_2012_11_31_58_pm.jpg

Jun 26, 2009 | Dell UltraSharp 1905FP LCD Monitor

1 Answer

Monitor goes black after power on.


May i know, is it a crt monitor or lcd monitor? If it is a crt monitor, then you can try to check the dry joint on te pcb board especially primary and secondary power supply. After that check the FBT with blue ring tester & cap meter to check their HV cap value.

If it is a LCD Monitor, please check on inverter board and the ccfl lamp too. Please check all the electrolytic cap on lcd monitor pcb board for low esr ohm with blue esr meter. Below is some usefull link for repair lcd monitor and crt monitor:

1) www.FastRepairGuide.com
2) www.fastrepairguide.com/recommend/lcd-monitor-repair/

Hope this help.

To your success,
Kent

Nov 19, 2008 | AOpen F2705 17" LCD Monitor

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