It is currently 17 Jun 2019, 22:21

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 Post subject: Re: Datasheet PM4007A
Posted: 15 May 2018, 07:07 

ldfan wrote:
Not sure if this will help...

This is a partial pic of the Sample Rate Systems AC3-RF Demodulator schematic showing the pin out of the PM-4007A.

This is probably the actual pin-out (from the service manual):



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Posted: 17 May 2018, 18:47 

A little while ago I invited Julien to be part of my Laser Amplifiers interview series and I was super-stoked he said yes and we pulled this off.

It's Julien's birthday today - HAPPY BIRTHDAY!! Now enjoy the interview y'all :thumbup:

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Posted: 21 May 2018, 14:16 

I’m impressed.

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Posted: 22 May 2018, 04:57 

The other option that I do is to just solder the parts directly to the Audio board, that way you don't have to worry about mounting an extra board.

Hmmm... never thought about that and also curious to see how such a mod would look like. Would you have any pics to show?

Also, I would still prefer putting the parts on a separate board since I have swapped these boards into different machines and it's obvious it's much easier to move the circuit in this fashion since it's self contained.

No I don’t have any pictures, it’s different for each model. Your board would be faster to install, I just like to add directly to the board as it fits in tight spaces as in some of the older players and I never have to worry about it coming loose inside the player.

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Posted: 14 Jun 2018, 03:33 

Harman Kardon ADP-303 Digital output

The ADP303 mod thread I mentioned earlier.

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 Post subject: Re: TA-F808ES Pain
Posted: 18 Aug 2018, 14:16 

Yep, it's all part of the challenge of seeking stuff from a better era.

Good luck with that Marantz

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Posted: 03 Oct 2018, 19:26 

No matter, glad you are here.

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Posted: 02 Nov 2018, 04:10 

He needs to try a CD as analog audio can work with low RF levels. If cleaning the laser lens when you have it open doesn’t help then you either have a weak laser output or you have 3 Laserdiscs with laserrot.

If it cannot play a CD then the RF level is weak.

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Posted: 20 Feb 2019, 14:53 

There are many ways to do this and it all depends on what you have and your experience with them.

1 get stain that is the correct color, touch it up wait many days for it to dry and then fill with epoxy and blue tape to hold it in place.
after its dry you can sand lightly to smooth and then touch up with clear coat.

2 you can get powered pigment and mix into the epoxy and do the same with blue tape to keep it in place sand etc.

3 you can get artist oil paint to match the color and do the first step just swap oil paint with stain.
Good luck, its very easy if you've done it before and if you have the materials.

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 Post subject: My 59th LaserDisc player
Posted: 14 Mar 2019, 21:00 

Nothing to see here. Move along.

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Posted: 25 Mar 2019, 09:07 

I'm working on a good reproduction of the M-holder, as discussed here:

I received the first prototype (printed in MultiJet Fusion from HP) which seems to be very solid
There is only 2-3 little things to correct and I'll order a new prototype, which should be a final version.
From there I will be able to order more stucks if some guys need it.

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Posted: 01 May 2019, 03:53 

So I recently picked up a CLD-D703 and honestly, I'm not too impressed with it.

1) Speckles/blips on discs are much more present than they are on my CLD-1070 (I probably have said 1080 on other posts, but it's a 1070).

2) I notice a weird type of subtle grain on the picture that is hard to describe but there's like a texture on the image that doesn't seem like it's inherent to the information on the disc. Note that I've been turning off the DNR as other have recommended, so maybe that would help, but I don't like the idea of old tech noise reduction altering the original image.

3) I have one disc that has distortion on sibilants ('s' sounds) that isn't present on my CLD-1070. I even toggled the different audio modes and it's always there. It's possible it happens on other discs, but I haven't noticed in the small sample I've tested.

So I'm thinking that for my purposes, the D703 is just not the type of player I want. I've read a bunch of praise for the CLD-3030 and something tells me that would be a nice player to look for if I want to get something either better than or at least on par with my 1070 as a backup. I really actually like the simplicity of the single-side play funtionality too, and it seems like a safer bet when buying a shipped player from eBay.

Anyway, has anyone else had this experience with the D703 or D704?

1) Pioneer used to fill drop-outs with black pixels but changed that to white with the X080 series, many people complained about the visual differences. And the 703 does have a sharper picture so things are easier to see.

2) The 1070 has a lower noise power supply and a softer picture, the 703 has a switching power supply to save money which will increase noise that can cause grain and the sharper picture makes it easier to see the grain. Personally I turn OFF the DNR when watching the 703/704/79/99. You just happen to prefer the film like smooth picture, other prefer the sharp dynamic picture. Your preference is more toward the 1070. The LD-S2 would be the ultimate player for you.

3) The 1070 uses multi-bit DACs verses the bit-stream in the 703 but that should not be the difference. The 703 has much higher grade audiophile decoupling capacitors to let the high frequencies out and better define the sound field, the 1070 has typical decoupling capacitors and they act as low pass filters. On a audiophile home theater you would hear the difference. The 703 would be more open and clear and the 1070 more closed in.

These issues are all user dependent according to your preference. The 703 when properly adjusted will give a very nice picture, it is just not the picture you prefer.

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 Post subject: Re: LD-V4400
Posted: 09 May 2019, 06:55 

once I drilled a small hole and used a triangular "file" (not sure about the term in english) to make the optical square fit. It takes much patience.
Used a back panel from a next. gen player as a template. once again it takes patience cutting it this way.

On my cld-d515 I cut the backpanel around the location where the optical is positioned now and put in that partical piece of backpanel coming from a cld-d925 along with the components from the 925. I used the disc grinder with a 1 mm disc to allow for accurate positioning. besides a narrow cut it looks great.
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