I have fixed 4 ultrasonic transducers where the wires have come off before.
So far they have lasted 5 years and are still going strong.
You can't just solder them as the ultrasonic itself along with the cleaning fluid eats the solder
If anyone needs these fixed send me a message.
The next thing is the ultrasonic oscillator system not working.
DISCLAIMER!
There is dangerous voltages within the seiko 101 autocleaner!! The ultrasonic oscillator system runs on +600VDC!!! AND this unit has capacitors that hold voltage, even when the machine is off and unplugged! So do not attempt any work on this unit yourself or do any of the steps following this unless you are a qualified electrician and know what you are doing!!! I do not take any responsibility if you get electrocuted/shocked or break your machine any more, as this is simply a guide to help with diagnosis. You have been warned.
If you are qualified and know what you are doing, you can try the following things to fix the ultrasonic system.
If you have a red indicator light on when the cleaner goes into the jar with the ultrasonic plugs on them but no ultrasonic output then this might help.
1. Check that the wires have not come off the ultrasonic transducer.
2. Check the small black plug that plugs into the unit for wire deterioration. If you are confident this is not the issue then go to the next step.
3. Check the output of the ultrasonic system itself, set your 1000V rated multimeter(as again, you need to be qualified and know what you are doing and should have one of these) to VDC, click Hz on the meter (I have a fluke 287) and put the meter leads in the black plug In the base with no ultrasonic plugged in.
With no jars in, set the machine forward so when you click push on, it drops into the same jar spot where the leads are located, as if the machine is running normally. When the red light comes on, the meter should show +100VDC and something like 430khz-490khz. If you see 2VDC or something like that then you have no output and can move onto the next step.
4. There are 2 valves within the seiko 101, there is a diode and a power valve. I can't remember the part number for the diode but the power valve is a 6CA7.
This valve is usually the reason the ultrasonic oscillator stops suddenly so you can try to pull it out and replace it, if you can't find a replacement, a EL34 is a direct replacement.(I have fixed 2 machines this way)
NOTE!! changing this valve changes the characteristics of the oscillator.. which needs to be at 470khz.
To tune this oscillator, go to step 3 above and then if you see an output, do the following: With an insulated screwdriver, adjust the tuning pot on the front panel(white and red) so the meter reads 470khz.
If you get this far, turn the machine off and on again to reset the cycle, plug in your ultrasonic and try again, the ultrasonic should be fixed and working again.
There is only one oscillator system, if it works on one plug, it will work on the others so it only has to be done once. If it doesn't work, you have bad microswitches, a bad relay or a broken wire.
If you still have no output, the other thing that usually goes in this machine is the capacitors dry up and get tired.
I have had direct replacements for these so I have never ordered them but mainly the 2 under the floor inside the unit are the problems. Again, 600VDC+ are found on these and they hold charge even when the machine is off so make sure everything is properly discharged before you proceed to change these. They are maroon in colour and I have seen one of these be blown up before.
Another thing that goes is the microswitches in the top arm under the white cover. And 2 or 3 of them on the synchronous motor cam in the base. There is a microswitch which turns off and on the ultrasonic system and on the 2A versions of this machine, it switches between 3 ultrasonic transducers as well.
The best type of microswitches in my experience is the Omron V-15 series 15A. These machines were designed to run forever but every single sequence step hammers the switch cycles, so don't skimp out on cheap microswitches as you will be In the same boat again within a year.
Another thing to check is the relays, bad contacts can stop things from working, check these and replace as necessary.
Finally, if all else fails, check the wiring inside for bad solder, broken wires.
If none of the above work, send me a message and I'll try to guide you.