Question about Samsung SyncMaster 730MW (Silver) 17 in. HDTV-Ready LCD Television

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Flashing power light 3 times then shuts off.

Use this tv as a monitor at work. came in one morning and it was off. tryed turning it on and the green power light turend on for a second then flashed a few times and then stayed off. no flash of picture or sound. im i outta luck? is it compleatly dead? can i pop it open solder a new fuze on or replace somthing? i havent worked on a tv before but work on pcs so i can figure it out quickly. any help would be great. -mikah

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SOURCE: TV won't turn on

sounds like the main board has an issue

Posted on Apr 30, 2007

  • 1779 Answers

SOURCE: I am working on a Samsung SyncMaster 170MP. When

It sounds like it since you have the 14v going to the inverter. Repairing inverter boards even on lcd's is 50/50 shot, so let's give it a go. If you have a dvm check the ohms on the inverter xformers ( if more than one) they should be identical in resistance. Check or replace all electrolytic caps on the board. That's about all you can do outside of replacing it, Oh, see if you have a 5v source going to in inv. bd also, check that.

Posted on Feb 21, 2009

  • 48 Answers

SOURCE: turns itself off

Either lamp is failing (not covered under any warranty), or the ballast has failed. Or it may be a problem with the power supply, or even the fans... What is the picture next to the flashing light? If it's only the lamp light, then either lamp or ballast, if temp is flashing (the thermometer), it will be fans, temperature sensors, main board or power supply.

Posted on Apr 22, 2009

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SOURCE: 32" Samsung TV, No Power or Sound, power LED on, flashes 3 times

Most likely the set has lost vertical sweep or the feedback from that circuit. This will shut the set down to prevent a horizontal line from burning the face of the CRT. This will have to be looked at by a technician.

Posted on Sep 11, 2009

  • 4 Answers

SOURCE: samsung lcd tv ltm1755b won't turn on (power light stays red)

Problem: Samsung LTM1755B with only a blinking yellow LED when you try to turn it on.

Solution: I just had one of these come in. I opened it up, and found the U501 capacitor a little suspicious looking, in that it had a deformed top. It was a 470uF 16V electrolytic 105degC 10mm x 12mm. I replaced it with a very good quality 1000uF 16V electrolytic 105degC 10mm x 16mm Nichicon UHN1C102MPD. After that repair, when I tried to turn it on, the LED was yellow for a second, then green, then I got a picture, and it appeared to work great. I then asked the owner a week later how it was working, and they said it was working just like new!

Posted on Jan 19, 2010

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Sylvania LD320SSX turns off by itself.

your powersupply is dying in the set.. have it checked..

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I try to turn it on but it just blinks on stand by

Probable Lamp. If lamp hasn't bown the red Lamp Lite won't flash but other lamp issues cause stby timer light to continue flashing. If stby red lite is flashing, count the no. of times flashing - could open thermal fuse (6X flashing)

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Green light flashes 5 and then red light flashes 6

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Apex 1919 tv model brand new and stopped working

I had the same problem. Turned out to be bad capacitor on the main power supply board. The board has a heavy red and black cable at one end and several grey wires at the opposite end. Near the grey cables there are three blue cylinders (two large and one small) surrounded by a black metal frame heat sink. One of the two larger ones was "pregnant" swollen and about to burst. I changed it and the other one like it will new ones from Radio Shack P/N 272-1032 1000 uf 35 WVDC. The unit powered up and worked fine again.
Find a friend who is handy with a soldering iron - parts cost about $3. Be sure to unplug and discharge everything before diving in.

Not a bad little TV/Monitor otherwise.

Good luck

Mar 21, 2009 | Apex Digital LD1919 19 in. LCD TV

3 Answers


The TV is on protect mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

Also ensure that the fault is not coming from a faulty receiver box sending bad signal, check if you get same problem with no receiver box or dvd connected.

If that does not work, and you keep having a flashing led on front of the TV, and tv turning off by itself after a while, that indicates a fault condition.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible reasons.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , startingthe flashing light.

If you are in situation one, then theTV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

Common faults that can occur are a blown capacitor on power board, a convergence IC has blown, or a fault on Digital board.

Check also the video cable or any external connection cable, if the cable is shorting, or the connector is bad, you can get same flashing state because of the video cable.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

Feb 25, 2009 | Hitachi Ultravision P50S601 50 in. Plasma...

1 Answer

TV will not come on.

Might not be the exact same problem as you - I simply turned the TV off one night and it never went back on. Just had the LED red light in front flashing. Was about to give up hope and kick it to the curb when I decided to try the Solution posted by CheapTech:

It WORKED. Plain and simple, it worked.

Jan 24, 2009 | Toshiba 42HP95 Television

4 Answers

Won't power, light goes green 5-10 seconds later red flashing light is basically what's its doing. at 1st i'd power down the tv for a min and then it comes back up with no red flashing going on.

keep pressing the channel up/down button and the screen will come on it may take a few minutes dont use the switch on the side of tv just use the remote buttons u could try the power button on the remote aswell

Dec 18, 2007 | Philips 42FD9954 42 in. Plasma HDTV

1 Answer

Green flashing power indicator light

similar problem with my Sony. Unplugging for 36 hours solved the problem for me

Sep 29, 2007 | Samsung HPN5039 50 in. Plasma HDTV

1 Answer

Cannot Turn on Monitor and Standby Red light is gone

If the power cable and power outlets are working and the TV still won't power up, then there's nothing much you can do. The power supply unit in your TV is blown. You'll have to get it replaced.

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