Leaderboard

the burnt one will be the same as the other 3, 47 ohms, check the zener diode, it's 4.7v the same as the other 3, this damage happens when someone connects a switch up incorrectly and sends 34v from the lamps up the switch matrix! so check the switches are wired correctly and not transposed with a lamp connection!

Nice clean cabinet, shame about the battery vapours. I always do the fingernail check on those little caps C9-16 and if any of them come I apart I swap them all out. I also check that all the tracks to the associated zener diodes and caps are valid to the triac driver transistors, it easy to miss. C47 will need changing too and make sure it's ground connection is valid as the track has all but disappeared. I usually stick a rivet in the battery terminal and run a new bit of copper back to C47. You may find the positive battery terminal has rotted back to R72 as well. All 10 of those transistors in the view will need changing even if they look good. With the rotten tracks to the Alpha I stopped trying to do them on top of the board and now run patch wires underneath. Hope I'm not teaching granny to suck eggs here. Good luck.

I have a couple of sets of reels here I thought it might be good to start a thread with the help of pictures on what's involved in a step by step guide of the strip down,service and rebuild of these mechanical parts. Some electro owners have their own way to strip and service these reels which is fine with the same results, this way is my own which I find easiest for me. This first set of reels are out of a Bell Fruit Ten Up. This is a four reel machine but the working parts are the same on a three reel set with only one reel less. A good tip is to take pictures of everything on your own reel deck as you move along so if you do happen to get stuck with many of the parts you will know exactly where they belong.. The reels in early electro machines are held secure in position by two clamps at the back, later models had two brackets mounted on either end plate of the reels and secured by two bolts accessed under the reel shelf. once released and the reel loom plugs disconnected the reels will lift out from the machine. Part 1. First job is to remove the drive belt along with the two drive cogs on the reel and motor shafts. the cogs both have two hex bolts each to secure them to the drive shafts and may need a pair of pliers to help crack them loose as they have to be very tight. both these drive cogs are identical so no need to mark which came from where as they can go back on either drive shaft when rebuilding.. Next the reel motor... Bell Fruit used BA socket sizes for the smaller nuts and bolts on their machines in the 70s so anyone like me with socket drivers the bolt size holding the reel motor is 4BA or approx. 6mm but first remove the two wired spade connections to the motor before removing the four securing bolts, this will allow the heavy reel motor to be removed from the reel deck and place to one side... All being well you should have these parts removed.

This is SNGs Main Control timers twelve switch operations during one cycle of the timer. Cam switch 1 Controls and supplies the reel motor.Switch wired positions are at Common, Normally Open to reel motor,Normally closed not used. Cam switch 2 Controls and supplies the self holding circuit to the main hold select relay coil and the pulse to the total play meter.Switch Wired positions are at common,Normally open to hold relay and Normally closed to total play meter. Cam switch 3 Controls and supplies the self holding circuit to the Cam switch 3 relay coil.Switch wired positions are at common,Normally closed to cam switch 3 relay,Normally open not used. Cam switch 4 Controls and supplies No1 reel index solenoid.Switch wired positions are at Common, Normally closed to No1 reel solenoid,Normally open not used. Cam switch 5 Controls and supplies No2 reel index solenoid.Switch wired positions are at Common,Normally open to No2 reel solenoid,Normally closed not used. Cam switch 6 Controls and supplies No3 reel index solenoid.Switch wired positions are at Common,Normally open to No3 reel solenoid,Normally closed not used. Cam switch 7 Controls and supplies the self hold circuit to the 1 credit relay coil and pulses the cash in 5p value meter,also pulses the token in meter.Switch wired positions are at Common,Normally open to credit relay and Normally closed to pulse meters. Cam switch 8 Controls and supplies self hold circuit to cam switch 8 relay coil and self hold circuit to the 2 credit relay coil.Switch wired positions are at common,Normally closed to cam switch 8 relay,Normally open to 2 credit relay. Cam switch 9 Controls and supplies circuit to reel board studs/wipers and supplies circuit to cam switch 22.Switch wired positions are at Common,Normally closed to reel boards,Normally open to Common on cam switch 22. Cam switch 10 Controls and supplies circuit to cam switch 1-12 main control timer motor and supplies circuit to cam switch 26.Switch wired positions are at Common,Normally closed to main control timer motor,Normally open to Common on cam switch 26. Cam switch 11 Controls and supplies self hold circuit to cam switch 11 relay coil and supplies circuit to cam switch 20.Switch wired positions are to Common,Normally open to cam switch 11 relay,Normally closed to Common on cam switch 20. Cam switch 12 Controls and supplies 0v circuit to cam switch 1-12 main control timer motor and 0v circuit to No 4 reel index solenoid.Switch wired positions are at Common,Normally open to main control timer motor,Normally closed to No4 reel index solenoid.