Monitor - High Pitched Pulsating Beep

Samsung
SyncMaster 225BW
22" LCD Monitor
1680 x 1050

My computer monitor has started to emit a high pitched, pulsating beep. I can hear it when it's on standby mode and while it's turned off.

It can be heard from a couple of rooms away, just loud enough to barely be heard, yet annoying. The noise goes away once the computer and monitor are powered back on.

The monitor is a few years old, is this a sign that it's on borrowed time now?

Thanks

 

Hmmm, I have heard of monitors making a high pitch sound, but it is constant, not beeping. Still, I suspect the power/regulator circuit has developed a fault - likely a capacitor is beginning to fail. It likely can be repaired - but whether economically feasible is another story.

If me, since it is already a few years old (and assuming out of warranty) I would just try to remember to power off the monitor instead of letting it go into standby/sleep mode so I don't get so annoyed with the beep I throw a shoe at it. Then in the meantime, start researching new 24" monitors and watching out for sales!

 

https://www.devside.net/blog/lcd-making-a-buzzing-noise

try turning the brightness down before you turn it off and see if the sound stops.

 

I've seen that article before but the OP reports his monitor is beeping, not a constant buzz or noise. Also, I noted that article says the noise was worse when the monitor was turned off. That does not seem likely to me.

At any case, I agree it is likely a cap going bad.

 

Will my monitor suddenly not light up one day with this power/regulator circuit fault? I'll watch for sales in the meantime, lol.

I've come across similar articles too. The brightness was actually already set to a low 28. I tried upping it to 50 just for the sake of changing it, didn't work. My eyes are pretty sensitive and find this monitor is quite bright to begin with. The article mentions lowering the screen refresh rate. Mines already set to the lowest 59 Hertz. (The other number available was 60).

Sorry, I'll try to be more clear with my sound effects, lol...

Standby/sleep mode: High pitched buzzing noise, fluctuates ever so slightly in pitch (what I meant by pulsating).
Turned off: Constant high pitched buzzing.

Believe it or not, yep, it's worse when the monitor is turned off, who woulda thunk, eh? lol

If need be, I can just flip a switch and turn the power bar off to everything and cut power to the monitor. However, my cable internet modem is also plugged into the power bar. Would this damage the modem with the power being cut every night?

Thanks for all your replies!

 

That's because like many devices today, when turned off, they are not really completely off. They are just in standby - as opposed to sleep. So the only way to really turn it off is by a master power switch on the back of the monitor (and not all have one) or unplug the monitor.

I am not a fan of power bars. If you really must use one, I would take your network gear off of it.

 

I may have to unplug the monitor, I don't see a master power switch. Thank you for explaining.

I don't have enough power outlets, so I had to use a power bar. But, I was under the impression that I should have my cable internet modem plugged into the power bar to help prevent surges to protect the equipment?

 

If you use a high protection SURGE PROTECTOR power strip, with INDIVIDUAL on/off switches for each socket (usually including a light to show when on and off) you can regulate the power easily to each separate socket.
You are absolutely correct - every regular appliance that is normally left on (TV/Audio, Computer equipment) is at great risk from power surges, but more than that - potentially fatal FIRE!!! Such equipment not connected via a surge protector is one of the biggest causes of fires in homes/domestic premises.

Here is an example:
http://www.amazon.com/OUTLET-SURGE-PROTECTOR-INDIVIDUAL-SWITCHES/dp/B002YKPWH0

 

Well, true - but I am not a fan of surge and spike protectors. IMO, they are little more than fancy and expensive extension cords. This is because for high voltage anomalies (surges and spikes) they simply chop off ("clamp") the tops of the wave forms leaving a not-so-clean waveform for power supply voltage regulators to clean up. This adds stress and strain on those circuits - which can increase heat and component aging.

And for "extreme" high voltage anomalies, if lucky, all a surge and spike protector will do is trip a breaker and kill power causing your computer and other connected devices to suddenly crash - never good.

For low voltage anomalies (which are just as common) like sags (opposite of surges) and dips (opposite of spikes) and brownouts (long duration sags), a surge and spike protector does absolutely nothing but again leave a messy waveform for the various regulator circuits to clean up - if they can. If they can't, then again the devices crash, and not "gracefully"

So IMO, all computer systems should be on a "good" UPS with AVR (automatic voltage regulation). A "good" UPS will use its AVR to clean up most high and low voltage anomalies. And for extreme anomalies, the UPS will kick over to batteries. I have my computer, all my network gear, and both monitors on my UPS. I also have my home theater audio gear and big screen TV on an UPS. I even have my garage door opener on an UPS! I live in Tornado Alley so power outages are not uncommon.

If you need more outlets with an UPS, just use a good extension cord (not a surge and spike protector) or one (or more) of these or these (which I use - nice for outdoor Christmas lighting).

If stuck with your power bar and it does not have individually controlled outlets, you might consider one of these.