Pioneer Kuro PDP-LX5090 buzzing and crackling

[Genjuro]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

Hello folks, sorry to revive an old thread.

My KRP 500A has started the same issue. While I was gaming it just began with the noises. I only have 7K hours on it. I have ordered the strips linked in this thread but it will take weeks before it arrives I gather as im in EU. Is it ok I have the tv on couple of hours a day untill its fixed or will it damage the tv etc? Thanks.

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

pretty sure the buzzing was way less with the frames off but i cant be sure
energy save mode 2 helps a bit

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

Also as previously mentioned, energy save mode 2 seems a necessity for some of them.

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

Yup. As I mentioned earlier in the thread, it seems some just do buzz more than others. One I had later on had the EMI strips in perfect condition but was louder than the one I replaced them on. If you read through you'll see I did dunk the vsus transformer in varnish before I figured out the strips were bad which may have contributed a little to quietening that one. I guess some of us were hoping this would be a magic solution to making our Kuros super quiet but it looks like it may only help in some of the cases.

How does the buzz volume compare to when you had the frame off?

Glad it helped out with the static sound at least.

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

ok replaced the strips and put back together the tv
the static sound has completely gone. Thank-you

It still buzzes fairly loudly, seems to be coming from the coils at the back of the unit, is there any solution for this?

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

You can cut the ends straight so they meet a bit more flush but I wouldn't overlap as it would end up too thick. Just try to get them to meet up nice and close without a gap. It's not too difficult.

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

ok received the strips they are the same ones you linked.
how do i apply them? they are 30 cm long and they are not cut straight.
do i cut them straight? do i overlap them so there are no gaps?

thanks

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

Definitely replace them.

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

most of the strips are hollow, if i push down hard enough i get conductivity

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

Probably yes. Without the frame there is nothing to arc to. On mine the foam inside the strip was obviously deteriorated and the strip looked hollow is how I would describe it. But also you can take a multimeter on continuity/diode/ohms mode and measure between the surface of the strip and the metal frame at various points. You should get a beep or low ohms all the way along. If not it's not conducting well and should be replaced.

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

when i pull off the metal frame on all sides there is no crackling sound and there is way less buzz. emi strip doesnt look degraded but does look flattened out a bit (never done this before)does that mean it needs new emi strip?is it the same strip you linked? thanks

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

The ones along the bottom? Unscrew the screws maybe half way and then pull the screw to pull the little plug out with it. The ones on the top should release easily once the bezel is lifted to the required angle.

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

how do the clips come out, do i just pull them straight out? i dont want to break anything.

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

Remove the four screws/plugs along the bottom edge of the bezel plus two long screws that go through the back of the TV into the bezel at either end of the TV (prob already removed if back is off). Then you have to hinge the whole bezel up from the bottom to about 30 degrees and it will come off the clips at the top. I'm assuming it's the same as the 9G models I've worked on. Otherwise if you can get the service manual it should have instructions.

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

im having trouble taking the front bezel off, the clips on the top are hard to release. thanks

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

You need to take off the front plastic bezel, and then the top edge of the metal frame that overlaps the panel. The EMI strip is attached inside the frame wedged between it and the glass panel. Be gentle with the panel!

[Matcat]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

I have a PDP C509A here in Australia that is experiencing crackling/static which seems to be located at the top of the unit and loud buzz. there is no fault in the picture that i can tell. the buzz isn't really noticeable when watching content but the static is. i pulled the back off the unit but cannot find any emi strips. have not seen static but but is clear to hear. do i have to pull it apart further to reveal them? the previous owner told me he messed with the service menu but i am unsure of what he did or if he changed anything. can anyone help?

[tom66]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

Very glad to hear, thanks for letting us know another Kuro lives on!

[adsa1971]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

This thread has helped me massively; for which I thank you. My 5090 started buzzing like mad. Once I took the front plastic trim off of the screen I could see arcing "fireworks" going on between screen and the metal foam strip. In each corner of the TV there are the screws that hold the whole screen in place. I tightened the screws as they had become looser than ideal. Voila!

Quiet. Perfectly quiet. Over the moon as this is still the best panel I have ever seen.

[tn245]

Re: Pioneer Kuro PDP-LX5090 buzzing and crackling

I got hold of another 5090 recently. In great condition and impressively clean inside. It buzzes noticeably louder than others I've worked on (though nowhere near as bad as the one that started the thread). I pulled apart the frame and checked the foam strip and it was almost like new and with good conductivity. So seems like this fix isn't going to help all of them but definitely worth checking the foam if the buzz is bad.