Night Moves Trough Opto Woes

[Biff]

Howdy

During a session on Sunday, we noticed it would not kick out balls. Further investigation and testing revealed the ball trough Opto not picking up the presence of the ball.

I checked on AP1 between 1 and 3 and i am only getting .8v when it should be 5v.

I cannot for the life of me figure out where it is picking up the 5v or ground from. Anyone give me a clue where to look next please?

I also noticed during the solenoid check that the pop bumpers did not fire, not sure if it is related?

Should the RED LED be on al the time or only when the IR LEDs are blocked, i assume only when blocked looking at the circuit diagram,

FYI this is one of the boards from Jim at my pinballs, so it's not an old dodgy board.




Thanks JB

 

[Paul]

Looks like the +5v comes into the board down the cable marked AJ1 into that board pictured above... so wherever that goes - where is the other end?.
If you are getting 0.8v between pins 1 and 3 then i would be buzzing out that cable and looking at either a broken wire or the far end...

 

[Sgt GrizZ]

I can look at mine and report when I’m home - a few days yet

 

[Biff]

View attachment 174332

Looks like the +5v comes into the board down the cable marked AJ1 into that board pictured above... so wherever that goes - where is the other end?.
If you are getting 0.8v between pins 1 and 3 then i would be buzzing out that cable and looking at either a broken wire or the far end...

Handily AJ1 is the name of the plug that plugs into this board… I thought the same as you until i lifted the apron and saw the AJ1 sticker on the plug… Totally agree i need to find the other end, that’s where the schematics seem to be less helpful. Thanks anyway. I will try squirting a signal gen down it with all plugs unplugged and see where i go from there.

 

[Biff]

I can look at mine and report when I’m home - a few days yet

Thanks GrizZ appreciate it.

 

[Moonraker]

Have you checked your fuses? If one is blown that will be enough to cause the problem

 

[Biff]

Hi, yea checked all i could find.

Thanks though.

Jb

 

[Biff]

Sorted. So for anyone that has a failing trough Opto in Night Moves: -

pins 1 and 3 where 1 = white/blue/Grey +5v and 3 = orange/white ground go to the main board on A1J6, with pin18 being +5 and pin 9 being ground.

The Molex type connectors were somewhat oxidised. I couldn't take them out of the plastic to slave with my normal removal tool so had to carefully clean then in the plastic housing. All fine now trough LED illuminates when ball in trough and game works okay from then on. But i would like to whip them out an do them properly.

<Stand down @Sgt GrizZ it waved the white flag and surrendered>

What do people use to remove the pins on the white connectors shown below please? And do you stick 'the tool' them in the cable entry side or PCB entry side to release? They have groves in both ends...

This is what i use, a bit flimsy though: -

https://www.amazon.co.uk/nuosen-Terminals-Extractor-Electrical-Connectors/dp/B07RRZRMNT/ref=asc_df_B07RRZRMNT/?tag=googshopuk-21&linkCode=df0&hvadid=344066719117&hvpos=&hvnetw=g&hvrand=1303512095447782495&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9046221&hvtargid=pla-756758021946&psc=1

Cheers

JB

 

[Sgt GrizZ]

Sorted. So for anyone that has a failing trough Opto in Night Moves: -

pins 1 and 3 where 1 = white/blue/Grey +5v and 3 = orange/white ground go to the main board on A1J6, with pin18 being +5 and pin 9 being ground.

The Molex type connectors were somewhat oxidised. I couldn't take them out of the plastic to slave with my normal removal tool so had to carefully clean then in the plastic housing. All fine now trough LED illuminates when ball in trough and game works okay from then on. But i would like to whip them out an do them properly.

<Stand down @Sgt GrizZ it waved the white flag and surrendered>

What do people use to remove the pins on the white connectors shown below please? And do you stick 'the tool' them in the cable entry side or PCB entry side to release? They have groves in both ends...

This is what i use, a bit flimsy though: -

https://www.amazon.co.uk/nuosen-Terminals-Extractor-Electrical-Connectors/dp/B07RRZRMNT/ref=asc_df_B07RRZRMNT/?tag=googshopuk-21&linkCode=df0&hvadid=344066719117&hvpos=&hvnetw=g&hvrand=1303512095447782495&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9046221&hvtargid=pla-756758021946&psc=1

View attachment 174334
Cheers

JB

Smells like ……victory

 

[Paul]

View attachment 174334
Cheers

JB

You... you have a cage around the transformer?? Is that standard?? It;s a good idea.... but i have never seen one!!

 

[Biff]

You... you have a cage around the transformer?? Is that standard?? It;s a good idea.... but i have never seen one!!

Not my pic, i robbed it off IPDB to illustrate the PCB connectors - mine has no cage neither. Always unplug form eth main kids when taking bits of the underside of the playfield. Sods law states if you do not something conductive will fall across the exposed conductors...