DRC wrote:
MarkOZLAD wrote:
Very interesting!
It has the same jungle chip as the BA-5D - CXA2154s
The procedure should be very similar. The OSD circuit is nigh on identical.
OSD inlines are R025, R026, R027 5600 Ohms
OSD ground resistors are R086, R087 and R088 - ready for removal!
Caps are C352, C353 and C395 (I think..)
Would be cool if you could identify jumpers on these lines if there are any.
OSD Diodes are D003/D075. OSD Termination resistor is 3300 Ohms R004. 2200R on 5V line will be fine as per other sets.
Inline RGB resistors for OSD mux should be of value 910 Ohms. 1000 Ohms would likely be fine.
Jumpers for the RGB lines are as follows -
R - JW341
G - JW342
B - JW343
I got 5V from CN006 Pin 7, and blanking goes to the cathode of D003. Im sure there are top side jumpers that could be used but I didn't look.
I used 910Ohm inline resistors, 75Ohm terminations, and removed R086, R087 and R088. I hate surface mount components haha.
I wired everything up to molex connectors for easy case removal, and to use either VGA for a Dreamcast @15k, or a SCART connector if and when I get something that uses it.
Would switching sync to Luma on S-Video or Component fix the left shift of the image? I just wired to composite video as thats what I'd used on the other few TVs I had modded.
Pictures here -
https://imgur.com/a/lZTtECeI wanna say thanks to MarkOZLAD and DRC. I have successfully modded my KV-27FS13.
I only have two minor issues. I only have an original SNES with an Insurrection Industries scart cable to test with right now. (I wired up a female scart connector on the tv.)
1. I'm getting some analog noise, kind of in the shape of like a repeating tangent curve. It's most noticeable on solid colors. I haven't wired up every single ground on the scart connector yet so I'm hoping this will go away once I button everything up. I haven't wired up audio either. I'm running whatever is on pin 20 (the website says its csync) to the component Y input.
2. I was planning on using scart pin 16 for blanking instead of wiring up a switch. I noticed a big enough problem. Having the cable plugged in, even without the snes on the other end, it causes a significant shadow or ghosting on the OSD. Using a switch solves this but I wanted to avoid it if possible. Any ideas? Maybe a diode would fix this?
edit: update: I'm getting noise/interference regardless of input. It's hard to describe but it's basically like the brightness is strobing in solid colored areas.
edit update 2: I completely removed the mod and it's still showing the interference. I wish I had double/triple checked if there was any interference before I started this.
edit update 3: I put the tv all back together (only difference is that the original OSD resistors are missing) to see what happened. SNES is still showing the same noise/interference (this time it's over component with hd retrovision cables. I've tested with contra 3 on my original not 1 chip SNES as well as composite on a SNES JR and all showed the same thing. Maybe its the SNES ac adapter I'm using.) The interference I was seeing with Saturn over Svideo is greatly reduced, if not gone, so that must have had to do with the position/rotation in the room or something.
I'm going to go back and mod it once I get some more scart cables to test with different consoles. An original SNES isn't the best test case as it looks like ass no matter what.
edit update 4: The exact same interference with the SNES is visible on my Commodore 1084s using composite too, using a different ac adapter. So now wtf is wrong with my snes.
edit update 5: The Insurrection Industries cables do have pin 16 properly wired. It turns out according to the spec, pin 16 should have a 75ohm impedance, just like r/g/b.