Question about Sony SDM-HS73 17" Flat Panel LCD Monitor

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Monitor keeps going black, turn power button off, find bad capcitors

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Posted on Jan 02, 2017

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SOURCE: screen goes black while power button is on i turn

Common problem with is SONY 17" and the 19" are due to fail lamp assembly as shown in my pictures here which will be the worst case. You will need to check the other parts in the set first.

You will need test lamps to verify.

Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors:

Learn about bad caps:

Capacitors kit: he can make you a set of caps for you.

Or just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

Posted on Jan 09, 2011

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SOURCE: monitor keeps going black, turn power button off,

The problem is in the inverter board it is on the verge of failure, it is caused by bad capacitors in most cases and will eventually go. The board must be replaced or an attempt to repair the old one.

Posted on Feb 15, 2011

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My Dell 17 inch monitor keeps dying out. At first, it would flicker black and then go back to the original setting. Now, it flickers black and dies out -- the "on" button goes from green to...

You can verify that it is the inverter going out by turning the monitor on in a dark room and shining a light directly into the screen. If you cannot see anything, then something has happened to the power circuit. Perhaps the solder on the power port has gone bad, and needs to be redone, or part of the circuit board fried. The only way to figure this out is to open it up and take a look-see. If you don't wish to try this, you can always take it to a shop and have them look at it. Be careful opening it, the inverter is high voltage. Don't have any power going to the monitor if you do this.

Mar 11, 2011 | Dell UltraSharp 1704FPT 17" Flat Panel LCD...


Power Light blinks on then shuts down - Black Screen

I couldn't find any fix on this monitor so I had to go it alone.......

My VG500b monitor would power on then the power light would blink off. there was no display at all but I could see the LCD panel change in brightness just a small bit during the power on and then power off. I found that there was a bad capacitor on the inverter board. I replaced the 47uF 25v capacitor with a 47uF 35v capacitor. (The 25v would be okay but I always replace a failed capcitor with a higher voltage rating) This capacitor is the shorter form in order to fit under the shield. You can use a taller capaitor but you will have to lay it down, as in bend the leads down and lay it on it's side in order to fit under the sheld when you put it back together. VG500b fired right up and is going strong once again. Hope this helps someone.

on Jun 16, 2009 | ViewSonic VG500b (Black) 15" LCD Monitor

1 Answer

Monitor keeps going black, turn power button off, and back on, reconnects and then goes back out again. happens with more frequency.

The problem is in the inverter board it is on the verge of failure, it is caused by bad capacitors in most cases and will eventually go. The board must be replaced or an attempt to repair the old one.

Feb 15, 2011 | Sony SDM-HS73 17" Flat Panel LCD Monitor

2 Answers

I have a Westinghouse monitor Model # LCM-19v SL the monitor keep turning off. Unplugging then replugging gets it working then it shorts out again. Can I replace the power Supply cord - Potrans ITE Power...

i also have a 19" westinghouse monitor the screen on mine goes black i just turn the monitor of then back on the problem is it's overheating and from what i understand it's caused by faulty or worn capacitors the ones that are bad are vented on top so it's easy to tell the bad ones. you can see what they look like on line!

Nov 18, 2010 | Westinghouse LCM-19v1 Monitor

1 Answer

I pluged up my moniter up and it didnt come on why is this.

Many monitors that do not come on or that fail to show power on by there LED in the frount have a issue with there power supply. Experts have found once the monitor was opened that BAD eletrolytic Capacitors where prsent, While these Capcitors where changed the monitor would be fuctional again.

1. check for bad eletrolytic capacitors
2. check your power cord
3. check power supply inside the monitor

Warning if you do not know how to check you might want to bring this to the attention of a local tech in your area.

Thanks for your question and please remeber to rate.

Aug 10, 2010 | Gateway FPD 1940 (Black)

1 Answer

My dell monitor will only turn on for a few seconds then it goes black. it doesnt turn of it just goes black and I can keep doing it and it will keep going black.


The picture board on your monitor is bad, since it goes off after few seconds and the power led or button is on, it means the picture board of your monitor has developed fault.

The best thing for you to do now is to take the monitor to a local repairer within your vicinity to help with the replacement of the picture board because the fault is not something you can fix yourself, in order not to complicate issues.

Take care.

Jun 29, 2010 | Dell E193FP 19" LCD Monitor

1 Answer

Screen keeps turning on and off. it will turn on then go all black but the green power button will remain green

You can inspect the power supply section first for bad caps with bulging top, or buy new PCB:
Make sure it matches what you have inside your monitors.

Mar 06, 2010 | Dell E193FP 19" LCD Monitor

2 Answers

What could cause a dell flatscreen monitor to go

Probably a bad power supply in the monitor. One of these days it will go black and stay that way.

Dec 08, 2009 | Dell E172FP 17" LCD Flat Panel Monitor

1 Answer

How can I fix FujiPlus 19'' monitor with power supply issues?

There is a fuse on the powersupply that you may want to check first, While you in there check the power supply make sure there is not bad capcitors or rails if there is replace the power supply unit. Make sure you follow all safty proceedures before opening this unit.

Jun 12, 2009 | Computers & Internet

2 Answers

Sampo Flat Screen Black unless unplug and plug back in

i had the same problem now my monitor wont even turn on if i do that the power light just keeps blinking maybe its a sign of a dying monitor

Jan 16, 2009 | Sampo PD-70 15" Flat Panel LCD Monitor

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