NES AV Famicom Tim's RGB mod strange color/sprite issue

[jm1607]

Hey guys,

I just finished Tim's kit on my AV Famicom. I'm not sure what to call it but I'm getting a weird jitter/sprite thing going on around my character in the game when they're in front of certain color backgrounds.

I've tried a few different games and it's the same on each. I took the mod board out, popped the PPU back on the original board, turned RGB off on the TV and used composite video and the problem goes away. I tried reflowing everything I can get to on the mod board. I tried different color palettes with the switch I bought from Tim. I took the palette switch off and bridged the 2 pads and no change. My TV is a 32FV300 that I RGB modded myself with a scart output. My RGB modded SNES and N64 work perfectly on it. I have a new scart cable from retro access.

I haven't done anything but install the mod board. I haven't cut any traces or did the voltar ground removal on the port or anything like that yet....

Any ideas?

Links to issue:

https://youtu.be/o70NP5Z3ATc

https://youtu.be/5ddgPQa7-bQ

[Kez]

People are using AI to write forum responses now? (EDIT: The AI post above has been deleted)

OP: Are you using a NESRGB 4? May be worth scanning back through the last few pages on the NESRGB thread (here) to see if any of the recent discoveries/fixes look similar to your issue.

[jm1607]

People are using AI to write forum responses now?

OP: Are you using a NESRGB 4? May be worth scanning back through the last few pages on the NESRGB thread (here) to see if any of the recent discoveries/fixes look similar to your issue.

I believe so, I just bought it a few weeks ago.

Thanks! I'll start looking through that thread

[DejahThoris]

People are using AI to write forum responses now?

Yeah this is the 3rd or 4th account I've seen doing this on here this week..

[Kez]

I believe so, I just bought it a few weeks ago.

Thanks! I'll start looking through that thread

I had a bit of a look around, it sounds very similar to the last issue described on this page - "colour fringes on the edge of objects".

It also looks kinda similar to this issue: viewtopic.php?p=1519189#p1519189
Which was resolved in this post: viewtopic.php?p=1523104#p1523104

Not exactly the same but I think it's worth trying to 100pf clock mod to start, and then maybe look into a clock buffer if that doesn't help. May also be worth reaching out to Tim directly if you bought it from them.

[jm1607]

I believe so, I just bought it a few weeks ago.

Thanks! I'll start looking through that thread

I had a bit of a look around, it sounds very similar to the last issue described on this page - "colour fringes on the edge of objects".

It also looks kinda similar to this issue: viewtopic.php?p=1519189#p1519189
Which was resolved in this post: viewtopic.php?p=1523104#p1523104

Not exactly the same but I think it's worth trying to 100pf clock mod to start, and then maybe look into a clock buffer if that doesn't help. May also be worth reaching out to Tim directly if you bought it from them.

I'm going to give it a try!

I ordered some caps, I'll keep you posted

[jm1607]

I believe so, I just bought it a few weeks ago.

Thanks! I'll start looking through that thread

I had a bit of a look around, it sounds very similar to the last issue described on this page - "colour fringes on the edge of objects".

It also looks kinda similar to this issue: viewtopic.php?p=1519189#p1519189
Which was resolved in this post: viewtopic.php?p=1523104#p1523104

Not exactly the same but I think it's worth trying to 100pf clock mod to start, and then maybe look into a clock buffer if that doesn't help. May also be worth reaching out to Tim directly if you bought it from them.

Tried the 100pg cap and didn't work. Actually completely screwed up the colors and had to take it off.

Just sent an email to Tim with HELP in the subject line. Hopefully he replies..

[jm1607]

Can you guys recommend someone I can send this in to?

I'm out of ideas and Tim won't email me back..

[TooBeaucoup]

Can you guys recommend someone I can send this in to?

I'm out of ideas and Tim won't email me back..

Try emailing him with your order number in the subject headline, followed by HELP.

This is how mine looked "Shipment Notice for Order #XXXXX - HELP" - He replied to me within a day.

[jm1607]

Can you guys recommend someone I can send this in to?

I'm out of ideas and Tim won't email me back..

Try emailing him with your order number in the subject headline, followed by HELP.

This is how mine looked "Shipment Notice for Order #XXXXX - HELP" - He replied to me within a day.

Ok, I'll give it another try. I did say HELP in the subject line but not the order #..

[Josh128]

People are using AI to write forum responses now?

What makes you think this?

[jd213]

There was a very AI-ish reply to the OP, but it's already been removed

[TooBeaucoup]

Can you guys recommend someone I can send this in to?

I'm out of ideas and Tim won't email me back..

Try emailing him with your order number in the subject headline, followed by HELP.

This is how mine looked "Shipment Notice for Order #XXXXX - HELP" - He replied to me within a day.

Ok, I'll give it another try. I did say HELP in the subject line but not the order #..

I can't promise he'll reply, but I'd imagine he gets TONS of emails with generic subject lines labeled "Help", and I'll bet a lot of those emails are general questions that are already answered on his website, so it wouldn't surprise me that he doesn't have time to sift through all of those emails. When I first emailed him, I did the same thing in my subject, and he didn't reply. As soon as I boldly included ORDER #XXXXX - I got a reply. Good luck, Sir!

[jm1607]

Just a quick update. Finally got ahold of Tim. He agrees there's a problem with the rgb board and he's send me another one.

[Josh128]

Did you use AI to compose your initial post or any reply in this thread? If so, why and how? Also, to those who somehow suspected this, what gave it away?

[Bratwurst]

Did you use AI to compose your initial post or any reply in this thread? If so, why and how? Also, to those who somehow suspected this, what gave it away?

The AI remarks have nothing to do with jm1607. There was a post full of generic troubleshooting tips and it had the general flavor of ChatGPT but it got snipped out of the thread. Bothersome and obnoxious that shit crept into an obscure little forum like this.

[Kez]

I edited my initial post to hopefully clear up any future confusion about the AI stuff.

Just a quick update. Finally got ahold of Tim. He agrees there's a problem with the rgb board and he's send me another one.

Good news! Let us know how it goes.