White dots on screen

[KRIKzz]

Another theory: terminate resistors. Seems like octal buffers on NESRGB does not have built-in terminate resistors, external resistors is not present also. I had a problems with ppu during N8 development, when i tried to use buffers without terminate resistors. But i had another kind of problem, mainly it was notable as IRQ problems

[TeamShake]

You can use a genesis 1 power adapter on a nes but not vice versa.  The model 2 supply would be fine also just the tip doesn't fit in the nes.

[bozo55]

The model 2 supply would be fine also just the tip doesn't fit in the nes.

Not only is the Model 2 a different size pin, but it is also centre pin positive...  I don't know if that matters since the original NES takes AC input.  I read that DC Adapters work fine.  I do know that the Gen Modell 1 Adapter works fine in my Super Famicom and AV Famicom.  It outputs around 13V unloaded, which is what my NA SNES adapters output.  The Japanese HVC adapters output around 17V  from a 120V outlet, which I believe is dangerously high. 

[TeamShake]

you can use a center pos or neg dc supply as long as its around 9 to 10v.  I have seen where some people have used up to 16v supply and said it works though but that would make the voltage regulator run pretty hot.  The NES comes with an ac supply but converts it to 5V DC inside the system.
I use a generic 9v DC center positive supply on my nes.

[bozo55]

V1.6 firmware has just been released to address a bug that was introduced in V1.5 (graphical glitches in SMB2/SMUSA).

http://shmups.system11.org/viewtopic.php?p=1021564#p1021564

I think I will hold off on this mod until it goes through more validation/testing.

[evil_ash_xero]

We're up to 1.7 now.

If anyone who is having this problem has the opportunity to test out 1.7 with the N8, that would be most helpful.

[Kyle]

You should have circled back around!

http://www.youtube.com/watch?v=41HNCD113og

[evil_ash_xero]

Jason is seeing this problem with other top loaders now.

I do not think this is specific to my system at all.

I'm thinking most people have front loaders, and that is why we aren't hearing about this more.

Maybe it is power consumption.

[Kyle]

What's fun is I had 4 or 5 toasters and I was going to send him a couple to mod. He said that he strongly recommended the top loaders and sold me them instead. I'm not mad or anything. It's just sucks if this is solely a top loader issue. Maybe he could relocate my mods to toasters.

[evil_ash_xero]

I'm asking around on shmups forum. And one guy has a top loader that has no problems.

This is mysterious, isn't it?

But it does seem to happening with top loaders, when it does happen. Specifically the 101.

[MockyLock]

I have myself modded 2 NES "toaster", one PAL and one NTSC.
Both works as expected, with no dot or any glitches in the screen.
I think top loader are recommended because of the insertion system of the cartridge, that seems to be more efficient.

[adimifus]

I have a top loader/n8/nesrgb and i've never had any issues like this. I am using a Famicom version of the N8. Is there any possibility that would make a difference?
I use a model 1 genesis power adapter, and i removed the 220uF caps ion the NESRGB board itself because the SNES scart cable i use has them in it (I switch it to my snes and n64 to play them). I think those are the only real differences in my setup.
My NESRGB is a first batch board, and hasn't been updated to a newer firmware yet (going to soon-- just got a USB Blaster).

[MockyLock]

The very first batch had an issue in the background color, remaining grey for most games. For exemple, Super Mario Bros had this problem.
Did you get this ?

[adimifus]

The very first batch had an issue in the background color, remaining grey for most games. For exemple, Super Mario Bros had this problem.
Did you get this ?

Wasn't that the second batch, with the different RAM chip? In any case, the only issue i have with mine is the messed up colors in Orb 3D and Duck Maze. (That i know of)
Super Mario Bros. looks and plays fine. I've never noticed any issues with colors being off in any other games I tried.

[Kyle]

Second batch pre-firmware upgrade.