Red sparkles on screen and crackling o speakers - plasma tv

[XB70]

We have a Panasonic 65VT20.

About a week ago, red sparkles appeared on the screen and there is a crackling noise on the audio

When the screen fades to black on a cut scene in a game, there are no sparkles and no noise. Same if there is white text on a black screen - no noise and no sparkles.

Any ideas what it may be?

Thanks in advance

[Ikemi]

Does the same happen with live television via a Sky/Freeview box, or a DVD player/another console? It might be the games console (as you mention game cut scenes) at fault; could be a graphics hardware issue. Do you use an AV receiver?

[Radec]

If it happens across all sources and it's deffo the TV then it may be a voltage issue.
Some of the Pioneer Kuro plasma suffered from this fault.
It meant going into the service menu to adjust some voltage values, I've not heard of it on VT's though.

There's a secret service menus on Panasonics that let you tweak and check stuff and one option shows you a white screen which will show up any non uniformity on your screen.

Think you press and hold Channel - (down) on your TV, then press 0 three times on the remote (maybe different for your model)

Edited to add, I'd Google how to use the service menu first as you may change something accidentally that could cock up your TV

Edited by Radec on Friday 2nd October 16:04

[XB70]

Ikemi said:

Does the same happen with live television via a Sky/Freeview box, or a DVD player/another console? It might be the games console (as you mention game cut scenes) at fault; could be a graphics hardware issue. Do you use an AV receiver?

Thanks so much for this and I started to look into xbox issues. Lo and behold, seems that they have the same issue. Hooked up the ps4 and no problems so looked closer at the xbox. One forum said that loose hdmi cables can be a culprit. Success!

A huge thanks to you for sending me down that road as has already booked a place to try and come and take it away for repair. Many virtual beverages to you. Cheers

[XB70]

Radec said:

If it happens across all sources and.....

Edited by Radec on Friday 2nd October 16:04

Thanks so much Radec as this also prompted me to look at rhe other sources too. Cheers!

[Radec]

XB70 said:

Radec said:

If it happens across all sources and.....

Edited by Radec on Friday 2nd October 16:04

Thanks so much Radec as this also prompted me to look at rhe other sources too. Cheers!

No worries, good that you got it sorted following Ikemis advice, always nice when something's a easy cheap fix.
Never good when you think an expensive item might be knackered and you might have to replace.