Not that I'm aware of
The schematics really only show a on/off... I don't think the CPU can PWM the leds to adjust brightness with the current architecture.

DE/Sega/Stern games use a relay to turn the GI's off and on... no ability to dim

they don't seem too bright on my pro

"The pin's so bright, I gotta wear shades"

I have not come across any setting on my pro. I love the brightness, though, especially with the lights off. It is blinding at times but that is part of the fun. Give it some time and I think you will get used to it.

If you want to see bright, install mirror blades!

no stern can dim the GI lamps

unless you are talking about the brightness of the controlled lamps???

Hmmm, then what is the setting "General Illumination Intensity Level" on AC/DC for?

I don't have an AC/DC but I know Star Trek was the first ALL led model.
Doesn't your AC/DC use normal bulbs / lamps for the GI?

I don't have AC/DC, but if I remember correctly a friend of mine owning an LE was very happy that he was able to dim the GI after the code update. Not sure if the LE's were LED only.

I would love to see a picture of that

stern uses relays to control GI

relays cant dim

even on the LE models they have additional relays under the playfield for the different colors (avengers/x-men etc)

100% this is available on AC/DC. There is a GI illumination setting that allows for you to adjust the brightness of the GI. While ST may be the first ALL LED game AC/DC Prem/LE was also pretty much all LED. The only things not were the flashers.

Also, the framework can control this as this is exactly what happens on MET Pre/LE in fade to black. The GI gradually fades to basically turn off. The insert brightness I'm not so sure about but the GI should be able to do this. I have a ST pro and I do not see a setting for it though so it may be something Stern left out of this model.

OP - Since there doesn't seem to be a setting. You could change some lights out to lighten the intensity. I went with ice blue lights and it came out great.

are the GI LEDs controlled lamps? because again, stern SAM boards use a relay to turn the GI on and off, relays cannot dim, they are relays

You can select them in batches (all white, all blue and all red) but you can not select them individually (like and insert).

I can assure you 100% that the GI in METLE/Prem can fade (happens in fade to black CIU mode and a few others). I can also assure you 100% that the GI in AC/DC prem/LE can be adjusted. I don't know how they do it as I'm not an IT guy but they do it. It's also reasonable to me to think that the relay controls on and off but something else would control the power to the LED's (that goes through the relay too). If I have to take a video to prove this I will but for these two games the GI 100% can dim.

Isn't the relay control only on Pro games? I don't own any Premiums, but don't they dim the GI at times? For example, during Fade to Black mode on Metallica Premium.

according to pinball news this is the back box of STLE, and you can see the relay on the top left under the bridge rectifier

128.jpg

I have never worked on an AC/DC LE or Met LE so I can't tell you if they use something else in addition to the relay... but by default SAM can't dim GI, they would have to add something extra

I know X-MEN LE and Avengers LE use extra relays under the playfield for the blue and red GI lighting so they also can't dim... those are the only "LE" machines I have had to service

SAM most definitely can dim GI as MET and AC are SAM games and they both can dim GI. I don't understand how you are still arguing this point. Maybe it's done via an aux board or something else but the fact is that it can be done and has been done.

Here is my AC/DC. It is the same board and also has the relay.

IMG_6128.jpg

In your picture, there is nothing connected to the normal GI connector (left board edge, under the yellow cable). I would guess they are actually being controlled by the new serial bus like the inserts. Maybe that is the confusion. From the player's standpoint, they are GI, but from a hardware perspective, they are controlled lamps?

It's done by an Atmel microprocessor on the multi color LED driver board, which sets the brightness using pulse width modulation (PWM) See the schematics on Sterns website.

untitled2.JPG

I believe the early runs had a screw head in the pop bumper area that the ball would sometimes hang up on. Stern fixed it in later runs.
Someone will correct me if I am wrong.

ding ding ding

we have a winner

they are "GI" but not GI, they are controlled

and since the STLE pic shows the GI lamps connected to the GI connector the answer is still correct, you cannot dim STLE GI lamps in the stock game, period

Search "Ball getting stuck on ST"
This thread has photos of the problem and solutions.

I think the screw is no longer there. But I will have to check when I get home.