Trying to fix a friends Triton PS (S200 variant).

Killer95Stang

Well-known member
Aug 17, 2012
942
Sunny SoCal
Friend of mine has a Trinton PS that recently stopped working. I've read most of the threads regarding on the S200's and hope to maybe get a few pointers.

Triton PS: 12/2018 Build date.

Symptoms: I plugged it into my S200 power supply (I have a Doheny Discovery). When I hit the power button, the triton starts to run in reverse, the suction thruster/ jet is not turning on, so the robot kinda has a floaty appearance as it tries to back up. It also will not climb, because it has no downward force keeping it stuck to the wall. During this time, it didn't appear that the blinking LED was working. On my Doheny, it blinks pretty bright, but I'm not sure if it is the same on the Triton. It seems like the initial reversing is taking longer than usual, but eventually stops. Nothing happened after that, so I turned the power off.

Taking it apart: I checked the swivel and it was perfectly clean and sealed. I also checked the connector at the top of the motor unit and that was still sealed and the plug is in good shape. Upon opening the motor unit, it had about 1-2 table spoons of water at the bottom and dry pack was soaked. As you can see in the pictures, the jet motor does have a noticeable oxidation. The brushes are worn, but they seem serviceable and should be transfering current. The circuit board did have a drops of water on it, but doesn't appear to have oxidation or burn patterns (tracing) in any of the circuits. The capacitors also do no look bloated or ready to burst. Bearings are still running very smooth.

Any thoughts? For now, I just plan on cleaning everything up with contact cleaner and tooth brush, drying up the case and sealing up everything before putting it back together.20220822_114305.jpg20220822_114316.jpg20220822_114359.jpg
 

Killer95Stang

Well-known member
Aug 17, 2012
942
Sunny SoCal
Update... Cleaned up the motor, cleaned and lubed all the seals. Put it back together and still acts the same. Turn it on, it goes in reverse, stops, then goes forward for a second. Stops and then never moves again. It appears that the thruster motor never runs during startup.
 
Last edited:

Killer95Stang

Well-known member
Aug 17, 2012
942
Sunny SoCal
So.. Final update. Robot is now working after my second attempt at fixing the robot. I concentrated on the suction motor, since I was not getting any movement from it. I took it apart once again, but this time I removed the printed circuit board from the back cap. I could see an excessive amount of corrosion, that also included one of the soldered joints to one of the coils. The corrosion was enough that the coil conductor was no longer making contact with the printed circuit board. My fix was to clean and then fill that void with solder, making a shunt to complete the circuit. After the fix, I connected the motor with some jumpers to a spare a Ryobi battery pack and confirmed that the motor was now working. I put everything back together and plugged the robot and boom!!.. back in action. Also, I took care the first time to seal up the motor housing and all seemed like it was sealed up pretty good, with no water inside. If it dies again, I'll probably just order one of the used motors off ebay to replace it, because the current motor has seen better days.
 
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