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 Post subject: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 06 Aug 2021, 11:54 
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Hello All

Have acquired another very cheap advertised as for spares player - So I expected the 2290 would only be good for parts but I have fixed its PSU issues, loading belt issues...and side turning issue - All that seems to work ok...it plays CD's fine, and plays Analog LD's perfectly....except....

Problem Ive found now is problems with Digital Sound encoded LDs.. - The player seemingly is failing to detect the Digital Audio track either at all or ? ...the front FL Info display does not display 'Digital Sound' ... & whilst playing a Digital Sound Capable LaserDisc you get a lot of hissing and little volume..same result through Headphones...+if you change Channels to output Left Channel only..then the hiss is gone.

So the players audio output works 'only' when its an Analog Audio Track from an Analog only Disc.

Analog Audio Track from a Digital Audio Capable Disc results in hissing and low volume from Right Channel - audio from Left Channel is OK
Digital Audio does not seem to be detected from a Digital Audio Capable Disc.
Using Headphones results in the same results.
CD's play ok.


Would Anyone have thoughts what this could be.?!

Many thanks


Last edited by d770 on 06 Aug 2021, 16:14, edited 1 time in total. _________________
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 06 Aug 2021, 15:19 
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d770 wrote:
Would Anyone have thoughts what this could be.?!


Its a PAL player :ugeek:

I believe there are some PAL players only play analog or only digital but do a google search on that.
Very few play both, but again I think I've read this and do a google search.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 06 Aug 2021, 16:13 
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Thanks rein-o
This one is def NTSC only player.

Its got me beat atm..plays CDs (Digital Sound) fine.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 06 Aug 2021, 16:35 
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Sorry, I just assumed that since you were in another country that it was a pal player.

So if you don't have the toslink or optical cable you won't get a change in digital audio.
It will change on screen and you will get different tracks like commentary if the disc has that with the red and white cables only,
no need for the toslink.

If you aren't getting digital from the LDs and CDs I would say it had to do with the digital board inside.
BUT you say you do get the digital audio from the CDs then its not that BUT again you need that toslink or optical connected to
get the digital in digital.

Does that make sense?, I'm still a little foggy right now from some work I did yesterday on the house.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 07 Aug 2021, 05:28 
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Yeah thanks rein-o I have the Optical connected all good there and Digital Sound comes through the Optical fine when playing CD's.

So its looking like an issue relating to LD Digital only - CD and LD Digital Tracks must be handled differently by the player circuitry ?!

..somewhere in that differential circuitry must be the problem....I dont know enough of the theory to know how LD and CD Digital sound is processed to know which area of circuitry to focus on. Ive got a scope..so could delve further... thinking it might be a dodgy Cap somewhere.!
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 07 Aug 2021, 10:53 
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Updating this thread -

I tested a load more CD's on this player...and out of 15 tried - the player played about 50% only ...tried the same CD's on my D770 with a result of 100%.

So assume now a potential reading disc issue...wondering if I have a weak/aging laser ?
I say this however playing LD Video is fine...

Can an aging/weak laser affect reading Digital Sound but not Video output??
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 07 Aug 2021, 15:17 
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I’ve never seen one of these players and I’ve never had this issue but when it comes to LD players it’s almost never the laser. Obviously the pickup isn’t getting what it needs but that doesn’t mean the laser itself is the issue. It probably has failing caps or needs an alignment or something.


Last edited by signofzeta on 07 Aug 2021, 15:18, edited 1 time in total.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?  Topic is solved
PostPosted: 07 Aug 2021, 15:17 
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Uncertain but it could also be capacitors.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 07 Aug 2021, 15:40 
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Thanks guys

What I'm thinking...

As I've acquired some 5 players now...4 of them Pioneer..I'm thinking its worth me getting a Pioneer Ref disc.
Then can attempt scope align/adjust the player (and other players as needed) ...with also the hope the process could hint me if something cannot be adjusted to spec.

For ref Dug deep on the forum search and got one hit for the same issue with the same player - seems to mirror my issue with this 2290 (2090).

[CLD-2090] Can't switch from analog to digital
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 07 Aug 2021, 16:02 
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Does the player make any sounds when spinning up that may indicate the disc is slipping on the spindle?
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 07 Aug 2021, 16:29 
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Did a recheck on that..no sounds of slippage - grip ring looks pretty new. Player has had relatively little use by the looks.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 08 Aug 2021, 05:32 
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..Also of note - the TOC are not being detected most of the time.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 08 Aug 2021, 13:56 
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d770 wrote:
..Also of note - the TOC are not being detected most of the time.


That’s what I was wondering about when I asked about slippage. Sometimes lack of TOC and lack of Digital Sound happen together. The player checks something as it’s spinning up and if it finds it before the disc hits full speed then you’ll have chapters and Digital Sound but if you have grip slippage or anything else isn’t right at the time the player will just do it’s best to play the disc Discovision style. Slippage will also kill DTS and, I think, VDNR.

Sadly I don’t know much more about it myself.

When you play CLV discs do you see crosstalk?
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 09 Aug 2021, 06:22 
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Not really wrt crosstalk ..not any more than I see on my D770... btw the D770 I have been using to compare also has trouble with finding the chapters on some CLV discs I have noticed!

Been watching the 2290 for slippage but if it is slipping its minor...starting to think something has gone out of spec?...components?

Maybe Scoping the unit with a Ref Disc checking Alignment may reveal where there are potential issues....it may not be fixable but would be good to learn what I can from this - which I have learnt a ton already!
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 25 Sep 2021, 18:02 
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CLD-2090/3090 were very problematic models.

Service notes for this model say a defective spindle or (less likely in your situation) poor solder connections.

Since you have an oscilloscope, you can easily see what is going on. Play a CD and look for the eye pattern. It should be very clear (hopefully you have an analog scope- it is harder to see on digital)

If the eye pattern does not look clean, that could be an indicator that it has a defective spindle.

Digital audio is stored at the very beginning (0 to 2Mhz) of the frequency spectrum on laserdisc, before the analog audio (2.3Mhz CH1, 2.8Mhz CH2). This might provide some insight into why you get analog, but not digital.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 26 Sep 2021, 10:01 
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cplusplus wrote:
CLD-2090/3090 were very problematic models.

Service notes for this model say a defective spindle or (less likely in your situation) poor solder connections.

Since you have an oscilloscope, you can easily see what is going on. Play a CD and look for the eye pattern. It should be very clear (hopefully you have an analog scope- it is harder to see on digital)

If the eye pattern does not look clean, that could be an indicator that it has a defective spindle.

Digital audio is stored at the very beginning (0 to 2Mhz) of the frequency spectrum on laserdisc, before the analog audio (2.3Mhz CH1, 2.8Mhz CH2). This might provide some insight into why you get analog, but not digital.


Thanks Again C++ !

Ive checked and both CLD-2090/2290 and the CLD-2590K players do use the same spindle VXM1046 ...for ref seems like a substitute is currently available from PacParts being VXA2107
I do have an analogue scope....I will be getting it out dusting it down and will have a look ...thankyou for the directions.!
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 27 Sep 2021, 15:38 
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d770 wrote:
Ive checked and both CLD-2090/2290 and the CLD-2590K players do use the same spindle VXM1046 ...for ref seems like a substitute is currently available from PacParts being VXA2107

Yeah this is just going of some old notes that may or may not be applicable. If anything, if you can confirm the spindle is defective, I would try pulling it and taking a look inside before ordering a new one (or better yet a donor unit to pull one from). It could be something else. If eye pattern is good, you'll need take a look at the reference waveforms in the SM that could be related to EFM/DA.
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 28 Sep 2021, 11:31 
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I can confirm the 2590K spindle is defective! it has an inordinant amount of play in the shaft both side to side and up and down movement! Im not so sure about the 2090/2290
Im planning to check both with a scope next week - (have to make room in the kitchen workshop).

btw have sent you a PM

Thank CPP!
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 Post subject: Re: CLD-2290 (2090) Digital Sound - not detected ?
PostPosted: 29 Sep 2021, 00:42 
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d770 wrote:
it has an inordinant amount of play in the shaft both side to side and up and down movement!

There is a little up and down, but shouldn't be any side to side.
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