Roto-Pool, Roto-Fruit, Rotolite, Electrodart, Bingola, etc.

[slotalot]

Hi,took wire off bell and checked both thermal blocks the right hand one is reading 41 ohms and the left hand is reading 50 ohms other terminals have been tested.The screw that goes to the bimetallic strip was really overtight so I took it out and fitted it again just loosely.

OK, If your ohms readings are correct there is a good chance that the thermal blocks are OK and just need adjusting
Now you have removed and refitted the adjusting screw, the bimetal strip, and possibly the top contact might require straightening so that the set of contacts "B" & "C" are closed, take great care here as the heater wire is wrapped around the bimetal strip and is VERY-VERY fragile.
Once you have done this we can sort out and re solder the wires to their correct terminals on the thermal unit...

TERMINAL "A" Should be connected to the black wire.

TERMINAL "B" Should be connected to the grey wire that comes from the right hand switch on the pay out slide, and also to the orange wire that goes to the right hand uniselectors. There may be an orange wire going to both uniselectors, make sure you get the correct one.

TERMINAL "C" Should be connected to the orange wire that goes to the coil on relay No.3, and also the orange wire that goes to the bell.
The pink wire should not be connected to the thermal unit at all.

Hopefully if no other alterations have been made in the past your machine should be fully working

[junior]

Left hand thermal wiring
A-black going to relay 4
B-pink going 2 directions 1-right hand uniselector
1-right hand payout contact on door
C-green going to relay 3 and on to bell

[junior]

The thermal contact is touching.

[slotalot]

Looks like someone has swapped some wires around at some time
Look at the right hand switch on the pay out slide, is there a pink wire on one contact and a grey wire on the other contact??
if so where does the grey wire lead to??

[junior]

Yep, the pink wire is on right hand side and the grey is on the left hand of the payout slide the grey wire then goes to relay number3

[slotalot]

Yep, the pink wire is on right hand side and the grey is on the left hand of the payout slide the grey wire then goes to relay number3

OK, the wires are different colours to the normal set up, but they appear to connected to the correct terminals

Have a look at relay 3, does the grey wire from the pay out slide go to one side of the COIL on relay3??

and then does it come off the coil on relay 3 and go to one of the contacts on relay 3??

Then from the other side of that contact on relay 3 does it go back via a white wire to the left hand switch on the pay out slide??

Then does the other side of the left hand switch on the pay out slide connect to the red wire??

[jonesthegarage]

Have a look at relay 3, does the grey wire from the pay out slide go to one side of the COIL on relay3??

and then does it come off the coil on relay 3 and go to one of the contacts on relay 3??

Then from the other side of that contact on relay 3 does it go back via a white wire to the left hand switch on the pay out slide??

Then does the other side of the left hand switch on the pay out slide connect to the red wire??

Stuart, were you ever a caller for the hokey cokey, or maybe it's just me that sees a certain rhythmic quality in your latest guide

[slotalot]

Stuart, were you ever a caller for the hokey cokey, or maybe it's just me that sees a certain rhythmic quality in your latest guide

You could be right Mick
But we haven't quite got to the part were it wont work and you shake it all about yet.. ....LOL.

[slotalot]

I have done a quick drawing of the part of the circuit that controls the bell/delay on the pay out, from everything else that we have checked, this is the part of the circuit that is at fault, if all the wires are in the correct place according to this drawing, and all the contacts are in their normally open or normally closed state at rest, and the heater wire is OK, then on a winning position the bell should ring for a short time before the pay out starts to operate
I hope this helps to clarify what you need to be looking for??

[junior]

Thanks I will have a go tomorrow I think that short pink wire might as well be cut off

[junior]

On the bimetallic strip how do I know if the heater wire is ok?

[slotalot]

On the bimetallic strip how do I know if the heater wire is ok?

If you remember we did an ohms test and you reported back saying it was reading 50 ohms across terminals "A" & "C" with one of the bell wires disconnected, which would indicate that the heater wire is ok ??

Basically what happens on a win position is:-
Power (win signal) comes out of the right hand uniselectors and tries to find the easiest route (resistance wise)to the neutral line, now if the contact on the bi metallic strip is closed, then the power will flow through this contact and through the bell in series with the heater wire, at this point the heater wire will start to get hot making the bi metallic strip bend opening the contact on the bi metallic strip and breaking the circuit, the power will then take the next best route to neutral, this will be through the r/h/ contact on the pay out unit and the coil on relay 3, now because the coil on relay 3 is using up most of the power the bell will stop ringing, though it will be still making up part of the circuit, at the same time the normally open contacts on relay 3 will close, the pay out solenoid will pull in and deliver a coin, and at the same time the r/h uniselectors will step forward one position, if more than one coin is to be paid out the above sequence will happen again & again until the r/h uniselectors stops sending out a win signal. everything will then reset waiting for the next win signal..

[junior]

The wiring is going tfrom payout slide to relay 3 as grey then to middle of relay 3 as grey and from front of relay 3 as white back to left hand contact on payout slide and there are 2 reds going to another contact

[slotalot]

The wiring is going tfrom payout slide to relay 3 as grey then to middle of relay 3 as grey and from front of relay 3 as white back to left hand contact on payout slide and there are 2 reds going to another contact

Yep, That part is correct

So from what you have said so far the wiring on the pay out section would seem to be OK as per the drawing I did for you, all be it some of the wires have different colours to what I would have expected them to be, but things like that did happen back in the 50s as there were no real standards to work to then.

So... the only thing that is stopping the bell from ringing and causing a small delay on the pay out is :-
The contact on the bi metallic strip NOT being normally closed and making a good contact
Double check the contact on the bi metallic strip and make sure it is clean and the 2 contact points are touching together, use the small adjusting screw to LIGHTLY push the top contact down so it touches the contact on the bi metallic strip, but don't over tighten it..

[junior]

I have just put pennies through and won ,nothing happens so I pushed down top of relay 3 and it paid out .

[junior]

Sprayed contact cleaner on contacts.put about 30 coins through won 4 times but arrow is not stopping on win at all but beside on miss.I live I an upstairs flat it could be interesting to see if it flies.HELP

[slotalot]

I have just put pennies through and won ,nothing happens so I pushed down top of relay 3 and it paid out .

OK, if it didn't pay out in the circumstances you describe above then the r/h switch on the pay out slide was not closed at the time of that pay out.
I think we are starting to chase ghosts now
All I can do is come back to the point that the R/H and L/H switches on the pay out slide, and the contact on the BI-METALIC strip must be clean and in a closed state at rest to make R3 operate and pay out the coins.
( by at rest I mean when you put a penny into the machine)
If any of these 3 contacts are not closed at rest then the pay out circuit will not work correctly.
Can I ask how far from Halifax you live?? could you get the machine to me??

[slotalot]

Sprayed contact cleaner on contacts.put about 30 coins through won 4 times but arrow is not stopping on win at all but beside on miss.I live I an upstairs flat it could be interesting to see if it flies.HELP

Everything happens so fast that you don't see the arrow stopping on the win position before it steps on to the next position along as it pays out a coin, this is why we have the delay circuit fitted, and it is the delay circuit that is not working, everything else would seem to be working OK.

[slotsoffun]

Topic moved & merged - Site Admin.

Just picked up what looks like the contents of a RotoPool machine, it's only the mechanism and no cabinet. I've screwed everything temporarily to a chipboard so I could test it. Powered on, tripped the coin switch and the right hand selector just kept spinning and clicking. Turned power off. When I try again, it does not work too good... Powered on, tripped switch, press the button to play, solenoids click, and every now and then the right selector does a few clicks then stops.. Im guessing the selectors are not making good contact. If I hold the button in too long and the selector does not spin then some smoke comes from one of the cut out overloads.

Any ideas? and is it possible to take apart those UniSelectors??
thanks

[slotsoffun]

OK so far so good. I've got the whole thing working. However, just a couple of questions if anyone has the answers, When it pays out the bell does not ring? I downloaded the RotoPool manual from here, but still cannot work out why. It works if I apply power directly!

Also, can the wipers on the uniselector be adjusted, as sometimes it lights up 4 bulbs in a row instead of 3, so I'm guessing the wiper contact is touching more than one tab??? Or is there another reason.

Thanks
(the manual was great help, thanks to whoever wrote this!)