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Scratch built AC3-RF board installed in my ProScan, PSLD43
https://forum.lddb.com/viewtopic.php?f=23&t=7827
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Author:  ldfan [ 20 May 2018, 22:33 ]
Post subject:  Scratch built AC3-RF board installed in my ProScan, PSLD43

All,

I started working on a scratch built AC3-RF output board 10 years ago but never got anywhere with it when I couldn't get it to work. So a couple of months ago, I got the itch to finally get it done and found that I had my mute control transistor wired up incorrectly. :problem:

So here are some images of the board and the player that I used for the experiment (a Pioneer, CLD-2090 clone in case anyone was wondering ;) ).


Schematic that I used to create the board
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Top view of the board
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Bottom view of the board
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Size comparison of the scratch built board and a BDE custom made board w/ surface mount components
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Solder points in the player for the board (+5V = red, -5V = blue, GND = green, Mute = yellow, AFM = coax wire)
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The board installed w/ all wires connected
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Wide view showing the board and RCA jack
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RCA jack internal view
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RCA jack external view
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The player playing an AC3 disc w/ Sony SDP-E800 showing a lock ("discrete" indicator lighted)
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So now that I have successfully made this board a reality, now it's time to make more of them so I can get the rest of my players up to the AC-3 RF spec. My next version will be on a board half the size (this one was bigger than it had to be but I was learning along the way so I needed space to figure it out).

Hope everyone enjoyed the images. It's quite exciting that I can now make these boards from scratch since all my past player retrofits were always from DIY kits that unfortunately are no longer available to purchase.

Author:  krbahr [ 21 May 2018, 05:53 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

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.

Author:  ldfan [ 21 May 2018, 06:30 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

krbahr wrote:
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.

Author:  signofzeta [ 21 May 2018, 14:16 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

I’m impressed.

Author:  krbahr [ 22 May 2018, 04:57 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

ldfan wrote:
krbahr wrote:
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.

Author:  ldfan [ 22 May 2018, 06:51 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

krbahr wrote:

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.


Well good to know. :thumbup:

Love to see it one day just to visualize it so feel free to post pics here in the future.

Thanks for the feedback. :)

Author:  ldfan [ 31 Dec 2018, 04:41 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

So finally I have an update on my next scratch built AC3-RF output board....



Top view w/ where the solder points are going to be
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Bottom view
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Size comparison w/ the BDE version
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The new board is half the size of the one I made in the first post (as I said I would do). I built this one in about three hours a few nights ago but it does need to be tested still. I will eventually have it installed in a Pioneer, CLD-M90 along with a optical + coaxial digital output mod. Stay tuned for a new thread when the time comes. :D

Author:  topdollar69 [ 22 Apr 2020, 15:05 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

Dave,

Would you mind sharing which through hole transistors you used for your circuit? Unfortunately I'm not skilled enough to cross the surface mount transistors that are listed on most schematics to a comparable through hole unit.

Thanks,

Ben

Author:  topdollar69 [ 22 Apr 2020, 16:39 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

Perhaps I need to give myself a little more credit when it comes to crossing transistors. It looks like DTC124ESATP is a close match for the UN2112, and KSC945YTA is a close match to the 2SC2412K. Are those what you used, or close to it?

Author:  ldfan [ 22 Apr 2020, 19:21 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

I guess I should have listed all the parts. These are the two transistors I used.

NTE123AP for Q1
DTA124ES for Q2


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Hope this helps

Author:  courtlyhades296 [ 06 May 2020, 01:57 ]
Post subject:  Re: Scratch built AC3-RF board installed in my ProScan, PSLD

I will pay you $30 for one of these for my player.

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