800XL With Yellow Silkscreen?

[flashjazzcat]

Not sure if this is a known variant (I assume it must be), but the yellow silkscreen is not something I've seen before (in ten years of fixing and upgrading dozens of 800XLs). NOS boxed NTSC machine.

 

[+kheller2]

That is an odd looking board.  It looks like a 130XE in color and all those MT rams.

How about a full shot of both sides.  The solder side should have an etch from the manufacture and date/week.

[+Faicuai]

It is certainly unique... but also has that eery "cheap" feeling I always get when I see a XE-class PCB...

 

Also the label is not pitch-black with white-color font, as most Taiwan-made labels I have seen... The white-ones (with dark-font) I have seen mostly say "Hong Kong"...

[Mazzspeed]

I actually prefer the yellow. My ageing eyes don't struggle so badly to see the silk screening, meaning I can identify individual components easier.

[flashjazzcat]

11 hours ago, kheller2 said:

How about a full shot of both sides.  The solder side should have an etch from the manufacture and date/week.

You would think so:

 

It's the first thing I looked for, but I can't see anything.

[flashjazzcat]

The money shot (it was hiding):

 

This must be a factory ID, since it also appears on C64 boards.

Edited April 14 by flashjazzcat

[+kheller2]

That's a PAL RF modulator.  I thought this was NTSC.

Look, the modulator was made 3 weeks before this one in the Keri board: http://www.atarimuseum.com/computers/8bits/xl/800xl/800XLK/index.html  no relationship I know. but still interesting.

 

 

[flashjazzcat]

7 minutes ago, kheller2 said:

I thought this was NTSC.

Certainly it is. There is no PAL colour burst circuit.

 

Most interesting regarding the Keri.

 

I discovered - while fitting U1MB - that the routing of the PBI traces is different to a typical 800XL too.