Author Topic: Red, White, Blue S+ machine (Read 1633 times)

Stayouttadabunker · « **Reply #20 on:** January 03, 2024, 08:29:51 PM »

Earlier, you triggered the [21] coin-in optics error code.
The only to clear that is to close the door.
You've cleared it, that means the door optics are working...we just gotta get the coin-in optics to work!

jay · « **Reply #21 on:** January 03, 2024, 11:41:22 PM »

Bunk, if the optic is not working What about clipping Q4

Stayouttadabunker · « **Reply #22 on:** January 04, 2024, 06:26:44 AM »

Clipping the Q4 chip off is something that Jim has always recommended.
At this point, it is worth a try Jay, because this coin-in board isn't registering anything back to the MPU.
I just don't know exactly what clipping off that embedded chip does tho?....it's right smack in the middle of the triangled ABC optics.

I'd rather see if he has the correct encoder guide that's sandwiched between the two optics boards.
If the encoder coin guide is too big, that would explain why the coins don't pass thru the "A" optical beam...but it doesn't explain why the "popsicle test" doesn't work.
I'll be honest, sometimes I couldn't get the [10-1] "popsicle test" to work with a known-good coin-in optics board either!

If you want to try cutting off the Q4 chip Busser, look at the photo below...it has three legs.
With a screwdriver tip, nudge against the body of the chip, it should break right off of the solder pads.

Click on photo to enlarge if needed...>>>

Busser0554 · « **Reply #23 on:** January 04, 2024, 11:24:28 AM »

Ill give the 10_1 test a shot the correct way first when I get home before Start busting chips off the circuit board. Ill post back thanks again!!

Busser0554 · « **Reply #24 on:** January 04, 2024, 05:14:47 PM »

So tonight's troubleshooting gave the 10_1 test with comparator unhooked. The input (optic) never flagged for 10_1. I pulled the ABC apart and checked the senders with a camera they looked good. I cleaned everything up and noticed the receiver side of the board had some burnt looking spots on the circuit board for the optic receivers. ( I cleaned the back side of the boards after this) . I also verified the middle of the ABC was set for 25cent. Also played with the coin comparator sensitivity + or - all listed above made no change with the machine accepting coins. I will attach photos after this post

Busser0554 · « **Reply #25 on:** January 04, 2024, 05:16:12 PM »

Busser0554 · « **Reply #26 on:** January 04, 2024, 05:17:16 PM »

Back of optic receiver looks burnt?

Busser0554 · « **Reply #27 on:** January 04, 2024, 05:18:29 PM »

Lights on the Sending side of optics look good?

Busser0554 · « **Reply #28 on:** January 04, 2024, 05:24:03 PM »

Wiggled wires and verified pins were seating in cable connectors while preforming 10_1... would the next step be to remove the mentioned Q4 chip??? Cant break what's already not working is a good attitude.

sixcardmark · « **Reply #29 on:** January 04, 2024, 05:45:42 PM »

Yes, is yours same as pic Bunker posted? Some are different. I take a needle nose and smash it then clean up the area.

Busser0554 · « **Reply #30 on:** January 04, 2024, 06:23:27 PM »

Okay I'll try cutting the conductors off the c4 chip and see what happens as always thanks again

Stayouttadabunker · « **Reply #31 on:** January 04, 2024, 06:58:46 PM »

If you still have it apart, plug the burnt red harness connector back onto the coin-in optics board, turn on the machine's power switch, turn off your room lights, and view the optics with a cellphone camera.
IF they're all good, you will see three blue-ish lights coming out of the emitters...it looks pretty cool really!
If you ony see the bottom two optics, then you KNOW that "A" emitter optic is toast and that's why the [10-1] test doesn't flag.
oh...you've shown that in Reply #26....oh well...haha

On the black plastic encoder guide, I wish you would have shown us a picture of the whole piece....I don't know the difference using the part numbers...I'm nowhere near an S+ right now....we'll have to trust your word that the encoder guides a quarter thru the three ABC optics.

oh! Clean the three optic holes in the black plastic spacers too...sometimes lint and "coin dust" clogs them up.

sixcardmark · « **Reply #32 on:** January 04, 2024, 07:08:43 PM »

The pic of the guide says (25 cents / SBA)

jay · « **Reply #33 on:** January 04, 2024, 08:04:31 PM »

One one version it’s Q4 and on another variant of the board it’s Q3.
I believe it’s a transistor and not a chip.

That was my conjecture that if the board is bad removing this won’t hurt.

Stayouttadabunker · « **Reply #34 on:** January 04, 2024, 08:15:18 PM »

Quote from: sixcardmark on January 04, 2024, 07:08:43 PM

The pic of the guide says (25 cents / SBA)

haha...thanks SCM...I never even looked at it...I can see the curve on it now.
So that means the quarters were indeed falling thru the ABC beams.
I'm hoping he coul show us if he was able to see the "A" beam with a digital camera.
I was looking at some optics in my workroom Monday...they looked like interstellar asteroids lit up....haha

Jay,
I think I've seen those switching transistors marked as Q2 as well.
They're in the SOT-23 package...as in the drawing below.
In the Q4 version, the chip comes off of the pin-13 of the [U4] chip.
One time I posted some photos of all the different coin-in optics boards on the old NLG website.
Think I had six different versions of these boards.

Click on photo to enlarge if needed...>>>

knagl · « **Reply #35 on:** January 04, 2024, 08:46:04 PM »

Can you post a picture showing the side of the comparator, specifically the connector I've circled in red? That doesn't look quite right to me from the picture you've posted.

Stayouttadabunker · « **Reply #36 on:** January 04, 2024, 08:54:35 PM »

Good catch knagl....!

It looks like the coin comparitor is missing the bottom black ground wire?

Busser0554 · « **Reply #37 on:** January 05, 2024, 03:24:03 AM »

Are the three photos I posted not showing up? I posted a photo of the three emitters working???

Busser0554 · « **Reply #38 on:** January 05, 2024, 03:24:52 AM »

I will grab a photo of the comparator plug when I get home from work thanks again

Stayouttadabunker · « **Reply #39 on:** January 05, 2024, 05:23:13 AM »

Quote from: Busser0554 on January 05, 2024, 03:24:03 AM

Are the three photos I posted not showing up? I posted a photo of the three emitters working???

The pictures are okay...I didn't see them when I posted for some reason.
Although the three optics are lit up, logic data isn't going back to the MPU as registered credits.
Knagl saw that your coin comparitor plug doesn't appear right...that might explain why you're not getting credits and the rake isn't functioning.
Personally, I can't see the black wire that's supposed to be on the bottom pin of that connector.
Normally we see the purple wire between the red loop, the yellow wire under it, skip one hole, and the bottom pin with the black ground wire.

I've attached a couple photos.
Click on any photo to enlarge if needed...>>>

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Author Topic: Red, White, Blue S+ machine (Read 1633 times)