Hey everyone..
so I attempted my first mod of a sony 27fs100 by lifting the pins on the Jungle IC, and damaged it beyond repair.
I'm trying again however, this time with a 27KV300. The goal is to drive the tube using GroovyMAME and crt_emudriver for use as a pseudo-arcade monitor for MAME / Arcade emulators.
Link to service manual is here:
https://www.manualslib.com/manual/68309 ... fv300.html
I'd like to go with the RGB Mux/mix method, and avoid lifting the pins on the jungle this time. There are a billion exposed jumpers on the topside of this board, so I'd love to find a place to tap in there if possible. I just don't know how to identify them on the diagrams, so I'm unsure where i'd go in. I'm already planning on using the luma and gnd pins on the S-Video connector for the Sync and Ground from the VGA side..
Based on the diagram, I'll be going in through 40 (blank), 41(B), 42 (G), 43(R). If I were to try this the old way, I'd have 75ohm resistors to ground on each of the R,G,and B lines coming in from the VGA connector, and a .1uF cap on each of the R,G, and B lines. That woudl, however, be going directly into the jungle chip. If I'm going in another way, I understand I'll hvae to calculate values, but I believe that depends on where I'm going in, and I'm not quite sure where to start.
Any help or guidance would be appreciated on this.
Thanks in advance!