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[CLD-950] Lines across screen and buzzing sound
https://forum.lddb.com/viewtopic.php?f=53&t=11174
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Author:  cobradile [ 09 Jan 2024, 15:09 ]
Post subject:  [CLD-950] Lines across screen and buzzing sound

My player has recently began to have sound and video issues when playing any LD. It buzzes a lot and sounds crunchy, and PAL discs have white lines shooting across the screen. These issues don't seem to happen with CAV discs, or at least the ones I've tried.

This happens with every LD I've tried, and if I leave the player on for over an hour, the issues go away, so maybe it's a capacitor problem?

What do I do?

Author:  cobradile [ 01 Jun 2024, 17:39 ]
Post subject:  Re: [CLD-950] Lines across screen and buzzing sound

Little update on this issue: The lines don't seem to be there any more, but now it doesn't play digital audio at all. On NTSC discs, it only plays the analogue portion, and on PAL discs, it plays no audio at all...

Author:  krbahr [ 01 Jun 2024, 23:03 ]
Post subject:  Re: [CLD-950] Lines across screen and buzzing sound

Did you try a CD? If it also won’t play cds then either the RF signal from the laser is weak or you have issues with the sound board. You need an oscilloscope to trace the signal from the laser to the audio board. Verify the amplitude.

Author:  cobradile [ 01 Jun 2024, 23:35 ]
Post subject:  Re: [CLD-950] Lines across screen and buzzing sound

I tried an audio CD, and it kind of played, the signal is very scrambled, though. I made a recording.

Author:  krbahr [ 02 Jun 2024, 01:16 ]
Post subject:  Re: [CLD-950] Lines across screen and buzzing sound

You need an oscilloscope to measure if the output from the laser is getting smaller from an aging laser or if the laser output to the digital board is good find the issue on the digital board. You can try turning the RF level adjustment up a little to see if you can get more life out of the laser.

This is all guessing you have cleaned the lens.

Author:  spooky [ 02 Jun 2024, 14:11 ]
Post subject:  Re: [CLD-950] Lines across screen and buzzing sound

I'd like to say THANK YOU to KRBAHR for his service to LD fans over many years. :clap:

Author:  laserking [ 18 Jun 2024, 22:59 ]
Post subject:  Re: [CLD-950] Lines across screen and buzzing sound

spooky wrote:
I'd like to say THANK YOU to KRBAHR for his service to LD fans over many years. :clap:


What spooky said! Kurtis is truly the greatest! :clap:

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