Question about Samsung SyncMaster 931B 19" LCD Monitor

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I had a power surge and now my samsung monitor blinks rapidly at the power button and wont power up is there a fuse on it

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There is a main AC fuse, but since you are getting indicator light, it means the main AC fuse is good. I would look inside for burnt parts, bad caps, etc first. Post the picture of the board will help.
If you are going to DIY and have proper tools and know safety precaution then please read on:
Most common failures in the LCD monitors are bad capacitors (bulging top/seal or leaking) in the power supply (they should be replaced in a set), blown fuses; poor solder joints, failed inverter circuits (blown fuse, shorted transistors, shorted/open transformers), bad lamps (poor solder connections or worn out lamps). You will need to open it up and inspect the inside, see example of failed monitors to get some ideas what to look for: http://s807.photobucket.com/home/budm/allalbums
Post back what you see inside so we can guide you further and it will help out other people in the future also.
http://en.wikipedia.org/wiki/Capacitor_plague
Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you

Posted on Sep 07, 2010

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Posted on Jan 02, 2017

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1 Answer

Our power went out for a brief moment and now the Samsung LN32A450 LCD TV we have isn't working and there is only a blinking red light on the bottom. Any suggestions?


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is it plugged into wall or a surge? may make a difference. Some screens require certain amount of KV and some surge protectors have less KV than needed to run some things. good luck

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Sounds like you may have had a power surge.??
Disconnect power and signal input.
Turn the unit off for 20 minutes or so. Check the outlet against another device. ( Light )
Turn unit on without connection to PC video.
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Check warranty, get it back to Samsung for repair.
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Screen is blank.


Could have blown some capacitors inside the monitor.
I just fixed one today that had no power, the blue ring around the power button didn't even light up when plugged in.
I open it and found 3 bulgingcapacitors on the power/inverter board.
They were all 25V 470uF rated capacitors.
Went to radioshack and found 2 35V 470uf, got them at $1.29 each, then I found 1 50V 470uF out of a dc car power adapter for an ipod, it was as close as I could find.
Replaced the 3 broken/bulging ones with the new/salvaged ones, put it back together, plugged it in and the blue light came on when I pushed the power button.
Plugged it in to my laptop with vga cable, and it works great.

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