LZX Cadet II - RGB Encoder

Some build pics of the Cadet RGB encoder.
The RGB encoder - handles the output coding.
It takes 3 color inputs from Cadet system and converts them into a composite output.

It's based around this module from the visionary system.
It's how the video exits the system. ... so I'd usually put it at the end of the chain.
It does need the sync cable.

These aren't official build notes, just my records to help me trouble shoot.
It's a work in progress.
Do let me know if you spot any errors or omissions.

 The PCBs come with one surface mount IC pre-assembled (AD724.)

C17 & C28 - they are labeled on the BOM as DPN. >....?????
Might leave these unpopulated for now.

C20 & C21 are 10uF Tantie caps

 Mouser : 581-TAP106K025SCS

They are polarized. The long lead is positive.

I'm missing the
595-TL431BQLPR ............there is a 26 week wait from mouser at time of writing.
It's a shunt regulator . Marked on the PCB as U11.

I'm trying the 595-TL431BQLP  instead.
I think the pin out is identical.

"TL431 variants, check the datasheet to make sure the pinout is the same as the one specified. Some of the variations have different pinouts. If pinout matches it should be okay. LM4040 is another substitute. These are all 2.5V precision voltage reference parts." (CreatorLars)

also (IN RELATION TO LATER MODULES)
"2N3904 and 2N3906 is OK. These are generic NPN/PNP parts." (CreatorLars).

ICs used in this build:
SN74HC14N
AD724JRZ
CD4053BE
TL431BQLPR
LM6172IN/NOPB
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Links:
LZX - official 
LZX - help - component substitutions

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