Philips G7000 - test-drb@ccmp.vtda.org

14 Aug 1997

...
  Well, finding a composite video point is trivial,
therefore.

Inside the modulator can, I fear.

I had another look inside last night.  The two metal cans appear to be 
video circuitry (on motherboard) and modulator (separate).  They are 
linked by a 4-way ribbon cable of which one conductor is ground.  I 
suspect the remaining three of being video, line sync and frame sync.  
(They could, I suppose, be composite mono, U and V but I doubt it) 
Assuming that there are no other connections to the 'Modulator' then one of
those wires has to be a power rail. I'd guess (without seeing the device or the
service manual) that the other 2 were luminance (Y) and (PAL-encoded)
chrominance, or possibly composite colour video and audio if it feeds audio
through to the TV.

...
 > >> What chips _other than the 8048_ are in
this device? Is the video side 
> >> custom or does it use one of the many Philips video chipsets? (Philips 
> >> Prestel terminals tend to be stuffed with their Teletext IC's, for 
> >> example...)  
...
 Pretty boring, I'm afraid - 8245 and 6110 plus
about 20 TTL chips.  I  
What the heck are those?

...
 can't read the numbers of the chips inside the
video can unless I 
desolder said can from PCB. 
Well, that's what I'd have done by now...

...

Philip. 
-tony