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Power Supply does not work constantly

Power Supply "AELTA" S/N AXF00629023512. Problem: "on and off" every 60 seconds and the picture shows normally.

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When I turn on computer,monitor doesn't show anything sometimes 1,2 hours , and then finally I can see descktop on computer...All that time,monitor is trying to show picture (I can see like blinki


This is a known symptom of a failure in the power supply board. Here is a link to a repair guide that shows how to dis-assemble and the unit and then what to look for and replace on the power supply board to bring the unit back to working condition.

http://www.ccl-la.com/blog/index.php/repairing-a-samsung-940n-with-a-blinking-power-light/

And here is a picture of the power supply board that needs to repair.


2_26_2012_6_05_52_pm.jpg

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

BuddyMc

Feb 22, 2012 | Samsung SyncMaster 940N Flat panel Monitor

1 Answer

Turn TV on and no picture but sound. Turn it off for about 5 seconds and it works fine. Also ... amber light constantly stays on. is that normal?


That is not normal, more likely to either to have power supply failure or the back light inverter failure.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com

Jun 28, 2010 | Vizio GV42L 42 in. LCD Television

1 Answer

Shows picture for a second when i press button than goes dark


Issues with back light:
Please do not attempt to diagnose if no competent.
Do at your own risk.
Check for 24 Volts power to the inverter board
No Power---Check Power Supply
Power Present---
Verify status voltage 3v to 5v on inverter board harness (plug)
Replace Inverter Board

Feb 11, 2010 | Tatung V30DMTT 29.6 in. LCD Television

1 Answer

When i switch tv on, it shows picture for 5 seconds then goes into standby. the tv is a vistron ltm-3271e lcd


The problem is associated with the power supply that cannot run under load. The showing of picture for a brief period of time indicates that the main board, ballast, inverter and panel drive are all OK. The unit turns on but the power supply cannot sustain the power requirement of the unit and shuts down.
The usual culprit on the power supply are blown or bad capacitors. Check the power supply for such capacitors. If no apparent damage or defect is found, replace the power supply.

Nov 07, 2009 | Televison & Video

1 Answer

Syncmaster 226CW showing picture only for a second + flickering


Hello,

Call and get the RMA for your monitor, the problem is in the power supply and it will only get worse. This is a common problem with LCD monitors after 2-3 years of use.

Buddy
Corporate Computer
www.ccl-la.com


Oct 17, 2009 | Samsung SyncMaster 2233BW 22" LCD Monitor

1 Answer

Samsung plasma - no picture


check the power supply board for blown/bulging capacitors
you should see 4 bad ones on the top left

Jun 12, 2009 | Televison & Video

1 Answer

Picture Tube alignment


the oscillation is not constant, there are two things to check in that tv. take your tv to a w/shop and let the following be checed
power output voltage if its constant from the power supply, changes.
secondly, check the variation of capacitance values on the power supply, and on the line transformer section.
dont gorget to test a line transistor also.
okay.

Apr 30, 2009 | JVC AV-36D303 36" TV

1 Answer

TV cycles on and off but never fully turns on


Tv POwers on shows a picture then picture goes and audio stays on

Apr 14, 2009 | Philips 43PP9202 43" Rear Projection...

1 Answer

Sony TV goes to standby - constant red light


The Power Supply has gone. It needs replacing.

Jan 04, 2009 | Televison & Video

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