i have some nes's that blink white and some that blink blue. why is this? does anyone know?

I've had some crazy colors in the past, green, grey, red, even purple. Just means your NES needs to be opened up and cleaned or the springs need to be copressed and adjusted so that the pins make proper contact.

hmmm, interesting. the nes works fine but if i turn it on with no game it's just a different color. i was curious. i thought it may have been because they were made at different times. i've never seen the colors you mentioned lol

Yeah now that you mention it, it does apear that there is a diference in colors between the 1985 and 1988 releases. The older ones seem to flash blue or green, or even red, while the newer ones seem to flash grey or blue.

hmm, red? i've never seen that. gives me something to look for lol. i have white ones and blue ones. that's it.

I guess theres alot of colors out there lol. Don't know why there's so many different colors on certain systems.

I've seen several color of blinking too. I think it makes sense with something like the date of release or the serial numbers. To my experience, I've never seen a NES changing color of blinking. If a NES blinks grey, it will whatever you do, at the exception of disabling the lock-chip, cause it will simply not blink anymore...

Are we talking about the blinking on the TV screen or the blinking of the LED light? All the lights are red unless they have been modded by someone. The on screen stuff just depends on the game being played the best I understand it. It is making some connection but not enough of one to read the game hence the solid color..I think.
~~NGD

Blinking on the screen, and there is definatly some color variations depending on the NES. Some systems consistantly display a color reguardless of the game.

No, it's dependent on the NES revision.  If your NES blinks blue, it will always blink blue.  I've seen blue, green, yellow, gray and pink, but I've never seen red.  Does anyone actually have one that blinks on-screen red?

I have a red one for all you nes variant hunters out there lol

Mine blinks lots of colors...and I have had the same NES since I was a little kid...
~~NGD

It seems like the 1985 releases display consistantly one color when they blink, while the newer ones depend on the connection or the contacts.

Mine was probably from early 1986 ish. I have seen pink, light blue, dark blue, light gray, dark gray, scrambled screens, white, red and green. I wonder if bunnyboy might know more about this?
~~NGD

I have to say this is a very interesting topic

I had no idea it was dependent on the hardware for each color. I thought I remembered my NES displaying lots of different solid colors randomly.

That is exactly what I mean Kevin. I think it is dependent on the connection and the game. I am curious as to where and why Basil thinks it is a hardware revision? Pretty interesting topic.
~~NGD

mine does it without a game in it. so it must have somethign to do with the nes it self. mines never changed colors though.

I dunno, I have definately had some systems that flash consistantly 1 color, and I have seen alot of systems as I buy and sell them. Most of the really early systems (1985) have had a green or a red screen, while the later versions are either blue, or some shade of grey.

Well my childhood NES (bought in 1987) has always blinked blue and no other color from day one (though it hasn't blinked in years since I learned how to properly keep the thing clean). And the 40 or so NES's that have passed through my hands over the years have always been a certain color and stuck to it. If you've seriously got a NES that blinks a kaleidescope effect, I'd sure love to see it

Are you talking blinks a certain color with no game in it, or with a game in it? Mine blinks a solid color (blue I think) with no game at all in it). The kaleidescope effect as you call it only blinks when a game is inserted in it and doesn't load and continues to blink that color. I think we are talking about slightly different things maybe?
~~NGD

Yeah, it will blink a certain color with no game in it, or if the game doesnt make contact with the pins.

All the ones I've had beyond the one when I was little have blinked green. When I was little mine blinked blue. I much preferred that.

Well if it's blinking a certain color because of the garbled signal it's getting from a game pak, I'd hardly call that its official blinking color; in that case it would change from game to game and even within the same game depending on how good the contact was, and would obviously be, for purposes of this argument, irrelevant.  I was assuming that the question was what color your NES blinked by itself, and whatever color it seems to be, it will not ever change.

Mine normally blinks blue, however sometimes when I fiddle with the game pack, it will be a different color, like green or purple.