So I've added LED to my No Fear, and I notice that some of the controlled lights like Jackpot, Super Jackpot, and Hurry up are on just a little tiny bit at all times. I'm just wondering if this is a normal thing? As in, maybe there are always trace voltages that don't light up incandescent noticeably, but light up the SMD just enough to see? Or does this indicate I have an issue somewhere?

Also, No Fear is a game that REALLY pops with LED. Nice to have really bright lights in contrast to the dark PF.

#2 9 years ago

BIN

urbanledge

Pinside member

9y 42,900 793 3

That's ghosting

#3 9 years ago

ZOE

85vett

Pinside+ Frequent

12y 110K 6,380 3

Yup, that is ghosting. Did you put non-ghosting lights in the game? That resolves the issue for most games but some require the use of an LED OCD board to get rid of it completely.

#4 9 years ago

BAR

iwantansi

Pinside member

10y 63,550 1,831

Ghosting explained

http://niftyled.com/blog/Ghosting-Explained-bp9.html

#5 9 years ago

EVN

EvanDickson

Pinside member

Charlottetown, PE

10y 91,550 2,677 5 49

Oh so that's what ghosting is. I did not use non-ghosting bulbs. Ghosting isn't harmful to the electronics or the bulbs, is it?

#6 9 years ago

DAV

wayout440

Pinside member

Berea, OH

11y 113K 11,264 3 12

Yes, ghosting. You have to keep in your mind that an LED is a semiconductor, and not a glowing filament - it reacts very different than a regular bulb, especially in a lamp matrix circuit that pulses voltage, or AC circuits. Plus, LED products vastly differ. You are going to want to either replace those with non-ghosting version LEDs, or install some modification to change what signals are put out to them (I'm not certain, but I think there is a board called "LED OCD" out there)

#7 9 years ago

DAV

wayout440

Pinside member

Berea, OH

11y 113K 11,264 3 12

OP
Quoted from EvanDickson:
Oh so that's what ghosting is. I did not use non-ghosting bulbs. Ghosting isn't harmful to the electronics or the bulbs, is it?

No, should not cause any damage other than annoy the player.

#8 9 years ago

MJS

dementedwarlok

Pinside member

Highland, IN

11y 57,650 2,600 4 9

not that i know of just looks bad

#9 9 years ago

EVN

EvanDickson

Pinside member

Charlottetown, PE

10y 91,550 2,677 5 49

Thanks for the replies, everyone!

#10 9 years ago

ZOE

85vett

Pinside+ Frequent

12y 110K 6,380 3

Just some advise at this point. Since you already spent the money on LED's and it would cost you a fair chunk of change to now replace them with non-ghost versions you may want to really think about the LED OCD board (http://ledocd.com/cart/index.php?main_page=product_info&cPath=1&products_id=8). With this board it will remove the ghosting but will also allow for fading of the lights which is not something the non-ghosting LED bulbs will give you. Not super cheap but it gives you the same lighting effects that your game had before with the incandescent bulbs.

#11 9 years ago

FLE

flecom

Pinside member

Miami, FL

12y 53,650 852 44 36

I can't remember what board set the NF is based on but you could also use the WPC no ghosting patch

see: https://pinside.com/pinball/forum/topic/non-ghosting-led-rom-patch-works

#12 9 years ago

CAA

caker137

Pinside member

Stillwater, OK

11y 77,400 478 7 68

Quoted from flecom:
I can't remember what board set the NF is based on but you could also use the WPC no ghosting patch
see: https://pinside.com/pinball/forum/topic/non-ghosting-led-rom-patch-works

Try this first for sure; makes a huge difference on STTNG.

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