Hi there. I'm working on a PDP-LX5090. It's otherwise working perfectly but while on and displaying anything on screen it makes a fairly loud buzz, louder than the normal plasma buzz, and quite audible from viewing distance while watching. When just turned on it also makes a slight crackling sound like static electricity I think coming from around the edges of the panel.
The buzz sound itself seems to come from the power supply or at least in that region of the panel. It is more audible from the back of the TV.
A video of the sound:
https://photos.app.goo.gl/Hw67z0S0MmPgRR9U2
I have another working PDP-LX5090 and I have tried swapping the PSUs and the buzz remains in the original panel and does not transfer with the PSU.
I have also tried turning down VOL_SUS and ABL as mentioned by tom66 in another thread on a KRP-500 that was making zapping noises but this only had a slight effect on the noise.
Any suggestions or thoughts?
The buzz sound itself seems to come from the power supply or at least in that region of the panel. It is more audible from the back of the TV.
A video of the sound:
https://photos.app.goo.gl/Hw67z0S0MmPgRR9U2
I have another working PDP-LX5090 and I have tried swapping the PSUs and the buzz remains in the original panel and does not transfer with the PSU.
I have also tried turning down VOL_SUS and ABL as mentioned by tom66 in another thread on a KRP-500 that was making zapping noises but this only had a slight effect on the noise.
Any suggestions or thoughts?
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