Post by radiohead314 on Mar 6, 2016 9:28:50 GMT -5
For the Barco guys! (and the rest 
.
I received this picture from a R762119 coming from a 1991 Barco 1200 with Sony tubes.
This seems to be an very earlie model? It seems to use the discrete Motorola transistors that Marquee uses too.
1991 neck board by Radio Head, on Flickr
In these pictures are the 3x R762292 (coming 1200 from 92-93 and 1209-1209/2 from 1994-1997 ) (original with VPA13 130Mhz sanyo chips) for Panasonic tube and 1x R7621195 (coming 1200 from 92-93) for Sony tubes (this one is modified to 180MHz with VPA18 and voltage regulator).
You can see brand new VPA18 chips and voltage regulators ready to be mounted. Custom heat sink. Someone tested 3x R762292 with P19LUGs in a 1609 they light up but with G2 to max. (probably need a jump wire somewhere on pins)
Possible these could be modded 130Mhz-->180Mhz R762292 in newers 1209s / 909 frames.
180mhz neck card by Radio Head, on Flickr
In the schematic section of the Barco 1200 there are pictures of schematics of the R762292 neckboard.
.I received this picture from a R762119 coming from a 1991 Barco 1200 with Sony tubes.
This seems to be an very earlie model? It seems to use the discrete Motorola transistors that Marquee uses too.
1991 neck board by Radio Head, on FlickrIn these pictures are the 3x R762292 (coming 1200 from 92-93 and 1209-1209/2 from 1994-1997 ) (original with VPA13 130Mhz sanyo chips) for Panasonic tube and 1x R7621195 (coming 1200 from 92-93) for Sony tubes (this one is modified to 180MHz with VPA18 and voltage regulator).
You can see brand new VPA18 chips and voltage regulators ready to be mounted. Custom heat sink. Someone tested 3x R762292 with P19LUGs in a 1609 they light up but with G2 to max. (probably need a jump wire somewhere on pins)
Possible these could be modded 130Mhz-->180Mhz R762292 in newers 1209s / 909 frames.
180mhz neck card by Radio Head, on FlickrIn the schematic section of the Barco 1200 there are pictures of schematics of the R762292 neckboard.
