Panasonic TX-P65ST50 Plasma Loud Buzzing

[Eiji]

It's a 2012 model plasma TV. It seems like it has the loose screws issue as the buzzing is VERY loud with bright images and varies so much that it can't be ignored.

The buzzing isn't just coming from one corner.

Forget about my seating distance, the buzzing can be heard clearly from even 20ft away when the image is very bright, like a bee hive!

I hope it's not the power supply on it's way out.

Am I right that the back panel can be removed without removing the pedestal stand? It would make disassembly much easier.

Looks like I need the XYN3+F6FJ-18PK screw set if it's the screws that are loose as the originals don't seem to have lock washers.

Does anyone know of any equivalents to the XYN3+F6FJ-18PK that can be purchased from a hardware store?

[tvtimmy]

Re: Panasonic TX-P65ST50 Plasma Loud Buzzing

I have scrapped 100s of tvs and saved most of the screws. The ones from older Samsung tvs with lock washers on them are what I use. I hand tighten them so they cant strip out. Just match up the lenght.

[tw2005]

Re: Panasonic TX-P65ST50 Plasma Loud Buzzing

It's a 2012 model plasma TV. It seems like it has the loose screws issue as the buzzing is VERY loud with bright images and varies so much that it can't be ignored.

The buzzing isn't just coming from one corner.

Forget about my seating distance, the buzzing can be heard clearly from even 20ft away when the image is very bright, like a bee hive!

I hope it's not the power supply on it's way out.

Am I right that the back panel can be removed without removing the pedestal stand? It would make disassembly much easier.

Looks like I need the XYN3+F6FJ-18PK screw set if it's the screws that are loose as the originals don't seem to have lock washers.

Does anyone know of any equivalents to the XYN3+F6FJ-18PK that can be purchased from a hardware store?

You could just tighten them up nice and firm and or a dab of non permanent loctite. I reckon they'll be M3 threads and then a matter of correct length as if they are too long you'll screw into the panel and crack.

Pre-2011 models have the better screws. Any freebies you could strip a lot of screws out of?

Or take a board screw out, take it with you and get the dimensions. Maybe a bolt store will have a better selection but you may have to get the washers loose.

[tw2005]

Re: Panasonic TX-P65ST50 Plasma Loud Buzzing

I have scrapped 100s of tvs and saved most of the screws. The ones from older Samsung tvs with lock washers on them are what I use. I hand tighten them so they cant strip out. Just match up the lenght.

True, I've used some too and pretty close to the panasonic bolt.

[Eiji]

Re: Panasonic TX-P65ST50 Plasma Loud Buzzing

The existing screws already had lock washers on them. I tightened some of them up but it made no difference, loud buzzing is still there. What else could it be? The sound isn't coming from just the top-left board (looking from the front) and when I run the screen wiper the buzzing sound follows the white bar from left to right so it's not a localised sound.

[tom66]

Re: Panasonic TX-P65ST50 Plasma Loud Buzzing

That sounds like the panel itself is buzzing, so make sure they put the rubber spacers in place between the frame and the panel. You will have to take the facia of the TV off to do this, but the TV will usually stand up fine on the stand and the panel should be attached to the frame (though be very careful to make sure it is, otherwise it might fall and crack)