Anybody Got The Dreaded Electrical Buzz With Their Plasma?
Discussion
Only its just developed on mine so I've rung Currys who are sending an engineer this Saturday. However looking on the web at various forums (AVForums/CNet etc) this is a known issue with these TV's...Samsung in particular but not restricted just to them.
The noise is there when the TV is muted and sometimes can get so loud you can hear it during on-screen dialogue. Some say to replace the power supply, others to ensure the PCB's are glued down, still others say its inferior electrical resistors fitted, blah blah.
Anyway - its certainly Electrical and not Vibrational in nature.
If you've got it you'll certainly know it.
The noise is there when the TV is muted and sometimes can get so loud you can hear it during on-screen dialogue. Some say to replace the power supply, others to ensure the PCB's are glued down, still others say its inferior electrical resistors fitted, blah blah.
Anyway - its certainly Electrical and not Vibrational in nature.
If you've got it you'll certainly know it.
Edited by im on Monday 15th March 12:22
What TV have you got? Samsungs Q87's (if i remember correctly) where the ones everyone complained about. An electrical buzz from a Plasma is considered normal as it is a part of the function of the set but yes they can get louder with old age and some sets are louder than others. It can also be exaggerated depending on its installation, for instance i have 2 Panna PW7's, 1 wallmounted on a solid block wall on a flat bracket, i have another upstairs mounted on an adjustable bracket on a wooden stud wall. Every now and again i swap them around to keep the useage on them even, reguardless of what set i put upstairs (on the studded wall) you can hear the buzzing a mile of! so in that case it isnt the TV that is the problem.
The buzzing usually comes from the chokes mounted to the driver boards, excessive noise is either caused by their physical mountings degrading or also if they arnt driven correctly this can increase the noise so usualy a PSU replacement and re gluing the chokes fixes it. In the case of the Samsungs the official statement was some mathmatical equation as to screen size, distance from the screen and volume level, basically they couldnt fix it so they fobbed people off.
The buzzing usually comes from the chokes mounted to the driver boards, excessive noise is either caused by their physical mountings degrading or also if they arnt driven correctly this can increase the noise so usualy a PSU replacement and re gluing the chokes fixes it. In the case of the Samsungs the official statement was some mathmatical equation as to screen size, distance from the screen and volume level, basically they couldnt fix it so they fobbed people off.
Guess which make I've got...
...yep, a Samsung. Got it at Crimbo, its the PS50B530 and only now having punched "samsung buzzing noise" into google am I becomming aware of the scale of the problem - particularly with Sammys. Indeed, on the interweb theres talk of a class action in the US due to Samsung not addressing this problem.
Anyway, apparently the fix you mention doesn't work for most people who are moaning on the forums and had whole new boards, PSU's (and sometimes frames) fitted, not to mention glue-a-plenty applied but all to no avail.
It'll be interesting to see what the engineer says it is on Saturday.
Apparently, its particularly bad on the B series of Sammys manufactured in 2009...and clearly mine is a 2009 model
...yep, a Samsung. Got it at Crimbo, its the PS50B530 and only now having punched "samsung buzzing noise" into google am I becomming aware of the scale of the problem - particularly with Sammys. Indeed, on the interweb theres talk of a class action in the US due to Samsung not addressing this problem.Anyway, apparently the fix you mention doesn't work for most people who are moaning on the forums and had whole new boards, PSU's (and sometimes frames) fitted, not to mention glue-a-plenty applied but all to no avail.
It'll be interesting to see what the engineer says it is on Saturday.
Apparently, its particularly bad on the B series of Sammys manufactured in 2009...and clearly mine is a 2009 model
Edited by im on Monday 15th March 17:13
Earth loop causes "hum bars"...you need a galvanic isolator (Hum-buster) http://rmscommunications.net/pdf/MI2120VPG69&7...
Hope that this helps!
Hope that this helps!
Toffer said:
Earth loop causes "hum bars"...you need a galvanic isolator (Hum-buster) http://rmscommunications.net/pdf/MI2120VPG69&7...
Hope that this helps!
Hope that this helps!
Thats probably a great idea but I'd need to be a TV engineer with a wiring diagram to attempt that so its a bit of a non-starter...unless all I have to do is selotape it to screen
Toffer said:
Earth loop causes "hum bars"...you need a galvanic isolator (Hum-buster) http://rmscommunications.net/pdf/MI2120VPG69&7...
Hope that this helps!
does that just screw in line on the ariel, and if it works why didn't local ariel/tv shop tell me about it..... haven't been able to use external comunal ariel since I moved as it buts a buzz through my surround sound/hifi system... so I have been a prisoner to virgin.Hope that this helps!
... bugger if I have just made myself look very sillyPlasma buzz isnt caused by any external source so an isolator of any kind would proove fruitless. They basically all buzz but some are louder than others and in some extreme cases like the Samsung being discussed it is a known design flaw.
It would in fact be a wonderfull thing if there was an aerial pluggy in thingy that would fix it but sadly i doubt it would make a difference.
It would in fact be a wonderfull thing if there was an aerial pluggy in thingy that would fix it but sadly i doubt it would make a difference.
headcase said:
Plasma buzz isnt caused by any external source so an isolator of any kind would proove fruitless. They basically all buzz but some are louder than others and in some extreme cases like the Samsung being discussed it is a known design flaw.
It would in fact be a wonderfull thing if there was an aerial pluggy in thingy that would fix it but sadly i doubt it would make a difference.
Arggh but would it fix my problem, which is not plasma buzz.... but a buzz when connected to my communal ariial It would in fact be a wonderfull thing if there was an aerial pluggy in thingy that would fix it but sadly i doubt it would make a difference.
Can I re-weigh in, as it were?
My Pioneer is quiet when the screen is blank, but noisy when there's a picture on the screen - particularly noticeable for instance when the screensaver for a radio channel is present.
When it disappears momentarily, all's quiet, when it reappears, so does the noise.
Thoughts? The newer Panasonic isn't afflicted.
My Pioneer is quiet when the screen is blank, but noisy when there's a picture on the screen - particularly noticeable for instance when the screensaver for a radio channel is present.
When it disappears momentarily, all's quiet, when it reappears, so does the noise.
Thoughts? The newer Panasonic isn't afflicted.
OK - Its gone! I have no f
king idea how but here's what I did.
The TV was wall mounted so I took it off the wall and placed it on the ground (nearly dropping it in the process as these 50" inch plasmas weigh a bloody ton). I tightened up every screw I could see and plugged it into a power supply whilst it was still stood on the ground. The buzzing was still apparent. I resigned myself to it having to go back to Curry's workshop and re-mounted it onto the wall and hey presto...no buzzing!
I can only think that it must have something to do with the way it was mounted the first time and that the slightest difference in its position when re-mounted has resulted in the buzzing disappearing. The way these TV's "hang" on the wall mounts might actually be critical but I dont know.
Of course, I'm just waiting for the buzzing to return but thus far, 12 hours and constant switching on & off and changing channels and nothing.
I don't think I'll cancel the call out until tomorrow though.
king idea how but here's what I did.The TV was wall mounted so I took it off the wall and placed it on the ground (nearly dropping it in the process as these 50" inch plasmas weigh a bloody ton). I tightened up every screw I could see and plugged it into a power supply whilst it was still stood on the ground. The buzzing was still apparent. I resigned myself to it having to go back to Curry's workshop and re-mounted it onto the wall and hey presto...no buzzing!
I can only think that it must have something to do with the way it was mounted the first time and that the slightest difference in its position when re-mounted has resulted in the buzzing disappearing. The way these TV's "hang" on the wall mounts might actually be critical but I dont know.
Of course, I'm just waiting for the buzzing to return but thus far, 12 hours and constant switching on & off and changing channels and nothing.
I don't think I'll cancel the call out until tomorrow though.
Hoover. said:
headcase said:
Plasma buzz isnt caused by any external source so an isolator of any kind would proove fruitless. They basically all buzz but some are louder than others and in some extreme cases like the Samsung being discussed it is a known design flaw.
It would in fact be a wonderfull thing if there was an aerial pluggy in thingy that would fix it but sadly i doubt it would make a difference.
Arggh but would it fix my problem, which is not plasma buzz.... but a buzz when connected to my communal ariial It would in fact be a wonderfull thing if there was an aerial pluggy in thingy that would fix it but sadly i doubt it would make a difference.
You dont get the same effects on freeview so if you can get it where you are then you would be better using that instead of the analogue signal.
Bak to the OP.. Yayy
so it was a mounting problem after all!Gassing Station | Home Cinema & Hi-Fi | Top of Page | What's New | My Stuff