OK so I have a Philips TS2774-C101 (F8 chassis). It should be a candidate for RGB mux mod, with a SAA5565 micro controller and a TDA8844 jungle IC. I have done a mux mod already on a well-documented Sony, so I am not a complete noob, but pretty close...
Here are the relevant portions (mostly) of the schematic. Power for blanking comes from elsewhere on the board (not pictured, but I know where it is).
https://ibb.co/R26Lmgd
The caps at 2625-2628 are 390 pF.
The resistors at 3675-3677 are 150 ohm. (3674 is marked 1800 ohm.)
At 6602 there is a 1N4148 diode, but I guess nothing at 6603-6605.
The properties of the components closer to the jungle IC are marked on the schematic...
I tried to follow MarkOZLAD's stuff, especially his recommendations regarding another Philips (an very similar E8 chassis). I just don't want to destroy this TV.
I think I need to insert somewhere between the 660X spots and the 47 nF caps (2247-2249) heading into the jungle IC.
I am just confused about what other components need to be removed or changed.
Any help would be very much appreciated!
EDIT:
Another thing I noticed studying the board... you see "Ext1R", "Ext2G" and "Ext2B" lines also running to the jungle IC from somewhere else. Somewhere being "A15" which I don't see anywhere in the service manual. So I looked at the board itself, they seem to originate at an unused 5 pin J219 header (R, G, B, blank and gnd). I'd like to piggyback off of that if possible. The weird thing is on the schematic these RGB lines run through resistors at 3231-3233. The schematic says they are 100R, the parts list in the same document says they are zero-ohm (jumpers basically), and in reality there is nothing there on the board. There is no continuity through the pads for 3231-3233.
I wonder if I can put 100 ohm resistors in there as shown in the schematic (which would effectively be my inline resistors for injected RGB), then based on MarkOZLAD's table I would put 680 ohm resistors and 1N4148 diodes in at 6603-6605? Or just 1100 ohm resistors at those points without diodes?