Lemony Vengeance
Mitt Romney's Hairdresser,
- Joined
- Jan 30, 2012
- Posts
- 4,204
Hey all,
I'm working on another JAMMAfied console, The SNES. When I'm done, I plan on putting together a HOW TO and putting it up here. RIGHT NOW, I'm stuck. Yep, RGB issues. AGAIN.
Here's what it looks like when I pull the video from the AV out, nothing in between:
Dark.
I tried the N64 RGB amp from the MMMonkey site, it's DIM, but super saturated, but then slowly gets darker over time.
I then tried the PCE RGB amp (I had a spare kicking around). No change.
THEN, I tried 220uf caps on the RGB lines (negative toward the edge) and it looked a bit more colorful, but not bright. I added 75 ohm resistors before the caps (but not between the caps and the edge) and.. well, this is what it looks like, compared to my PVM. I have two SNES consoles and two SF2 carts so they were taken nearly at the same time:
I did a bit of research and found out there's a few revisions of the SNES. I have the SNS-CPU-GPM-01 motherboard with the S-ENC A encoder, which is the ROHM BA6592F. Pins 20, 21 and 22 are R, G, and B respectively, but according to the schematics, the RGB lines split before they hit the encoder. One goes to the encoder, and the other goes directly to the AV socket on the back. Here's a link to the schematic of the encoder, and the SNES in general:
http://www.mediafire.com/?2x9erpy79q69o8t
I found this post on the Sega 16 forum that talks about an amp:
**EDIT**
after looking through the schematics, the above circuit it built into the SNES:
That's all I've found. Am I off the beaten path? Is there an easier way? I'd rather not venture out of this forum since a specific someone, who just happens to be the most vague guidance giver (and just so happens to love hot glue) frequents the other places and I really don't want to interact with him.
Any additional information or guidance or anything else would be most appreciated.
I'm working on another JAMMAfied console, The SNES. When I'm done, I plan on putting together a HOW TO and putting it up here. RIGHT NOW, I'm stuck. Yep, RGB issues. AGAIN.
Here's what it looks like when I pull the video from the AV out, nothing in between:
Dark.
I tried the N64 RGB amp from the MMMonkey site, it's DIM, but super saturated, but then slowly gets darker over time.
I then tried the PCE RGB amp (I had a spare kicking around). No change.
THEN, I tried 220uf caps on the RGB lines (negative toward the edge) and it looked a bit more colorful, but not bright. I added 75 ohm resistors before the caps (but not between the caps and the edge) and.. well, this is what it looks like, compared to my PVM. I have two SNES consoles and two SF2 carts so they were taken nearly at the same time:
I did a bit of research and found out there's a few revisions of the SNES. I have the SNS-CPU-GPM-01 motherboard with the S-ENC A encoder, which is the ROHM BA6592F. Pins 20, 21 and 22 are R, G, and B respectively, but according to the schematics, the RGB lines split before they hit the encoder. One goes to the encoder, and the other goes directly to the AV socket on the back. Here's a link to the schematic of the encoder, and the SNES in general:
http://www.mediafire.com/?2x9erpy79q69o8t
I found this post on the Sega 16 forum that talks about an amp:
**EDIT**
after looking through the schematics, the above circuit it built into the SNES:
That's all I've found. Am I off the beaten path? Is there an easier way? I'd rather not venture out of this forum since a specific someone, who just happens to be the most vague guidance giver (and just so happens to love hot glue) frequents the other places and I really don't want to interact with him.
Any additional information or guidance or anything else would be most appreciated.
Last edited: