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Repairing a power supply unit or monitor - Computers & Internet

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Power supply not work ac in put is ok

Posted on Sep 16, 2008

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6ya6ya
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Posted on Jan 02, 2017

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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

Flatron w2252tq


Hello Shan,

The W2252tq uses the AIP-0165 power supply board that is also used in the L227Wtg series LG series monitor. This board is known to have issues with the filter capacitors going out. When they go out it causes the monitor to not power up just lie you have. Here is a picture of the power supply board in the unit and below is a link to a repair guide for the L227Wtg, since it has the same power supply the repair guide for the board will be the same.


9_25_2012_4_11_26_pm.jpg

Here is the repair guide.

http://www.ccl-la.com/blog/index.php/repairing-a-lg-l227wtg-pf-22-monitor-no-power/

Sep 24, 2012 | Gateway FPD2275W 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

Monitor turns on then turns off


The most common cause of power issues with this unit are capacitors on the power supply board. This is an easy repair. Here is a link to a repair guide with full instructions showing how to open the monitor and what to look for and replace to rebuild the power supply board and revive the monitor.

http://www.ccl-la.com/blog/index.php/repairing-the-viewsonic-vx2235wm-lcm-monitor/

I hope this helps.

Dec 27, 2010 | ViewSonic VX2235wm LCD Monitor

2 Answers

I have a L227WTG and it will noit turn on, power button just keeps flashing and will not tuirn on the monitor. Help?


Unhook the monitor from the pc. Then go ahead and turn on the monitor. If the same thing happens then its an issue with the monitor and the monitor would have to be replaced. If the monitor turns on after unhooking it from the pc then its an issue with the pc.

Sep 22, 2010 | LG 22" FLATRON LCD Monitor

2 Answers

MY LG L194WT Was working turned it off and will not come back on. Should I have it repaired or toss it?


For a 3 years old monitor, first place to check will be bad caps in the power supply, open it up and post back so we can guide you further, see example of failed monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums

Feb 15, 2010 | Computers & Internet

2 Answers

My VA712 does not turn on, when supply button (mains) not from front panel, switch ON it shows blank screen (no sign of turn on) but when repeatedly switch ON & Off it Turns On & shows the display....


bholesir, If unit covered by ViewSonic warranty, USE IT!!! The units "switch-mode-power-supply" is in need of service!! Unit WILL require inspection and repair of possible bad (poor quality soldering) soldering of electronic components to the prinded circuit cards and or need replacement of bad (poor quality) electrolytic filter capacitors on the unit's "switch-mode-power-supply"/"CCFL inverter circuit" that have failed!! Do a visit to YOUTUBE for "LCD monitor disassembly" and "LCD monitor repair" so you can familarize FYI with what is inside your monitor, and possibly make a decision to do a DIY repair or contract out the work to a local TV/LCD monitor repair shop. If your pocket is deep enough, maybe you will repair and buy a new unit, keeping VA712 as spare unit for a rainy day. Read more of my responses to other owners in my FIXYA profile for more options not mentioned here. Good luck with repair. 12fixlouie

Jan 27, 2010 | ViewSonic VA712 17" LCD Monitor

2 Answers

LG L196WTQ monitor just quit working. won't turn


Look in the power supply section first for bad caps, post back what you find inside, pictures will help a lot to guide you through, see example of failed monitors due to bad caps: http://s807.photobucket.com/home/budm/allalbums

Jan 24, 2010 | LG L196WTQ Monitor

2 Answers

Power on/off not respond, what can i do ? my screen Samsung SyncMaster 920N


This may due to power supply is not connected properly or power supply itself gone bad. check and repair/replace the power supply may solve your problem.

Revert back for assistance.

Jan 20, 2010 | Samsung SyncMaster 920N 19" LCD Monitor

1 Answer

NEC LCD1912 LCD monitor, no power


More than likely, the power surge burned one of the small resistors on the power supply or secondary side of power out put card. This is not a hard repair to diagnose or to make but you will not want a novice to do it as you can do more harm than good if you are not qualified with a soldering iron and multitester.
Better to take in for repairs, should not be that expensive from what you haev posted here to fix it.

Feb 04, 2008 | Gateway FPD2275W LCD Monitor

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