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Thread: MOF001 Speed Controller Problem
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13th May 2017, 01:07 PM #16Senior Member
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Yes, it is a non-repairable item, the epoxy is to protect against vibration, dust and moisture. The thing that will fail first is usually the pot, in particular the carbon track and the brass wiper. The next thing to go, especially now that we have lead-free solder, are the connections between the pot and the circuit board. Examine these under a magnifying lens to see if there are any minute cracks in the solder or, if the magnifying lens isn't available, just re-solder the joints with good old 60/40 resin core solder and a 30W soldering iron.
If you have a multi-meter and know how to interpret the readings, check the resistance of the pot and the variation of resistance as the speed knob is moved. Good luck.
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13th May 2017 01:07 PM # ADSGoogle Adsense Advertisement
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15th May 2017, 10:24 AM #17Intermediate Member
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There is a solvent you can use to remove the epoxy without damaging the board but I'm buggered if I can remember what it is
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18th May 2017, 06:30 AM #18Senior Member
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I wonder what it might do to the components on the board? Be good if it worked though.
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18th May 2017, 11:24 AM #19Woodworking mechanic
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We used some product years ago on CDI ignition system from outboard motors. It had to be used in a fume cupboard. Turned the epoxy into a gel like substance BUT removed any markings from capacitors, transistors etc.
Like BertR, I cant remember the name of the substance but I have heard that ketone based solvents may work.
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18th May 2017, 11:26 AM #20Intermediate Member
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I've been trawling through all my manuals and tech notes to find what it is, no luck yet. I do remember it isn't real nice to use. Doesn't hurt the components or the board, that's why we used it. Quite often used it in my previous life as an electronics tech.
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21st May 2017, 06:02 PM #21
Intermittent speed or working on & off....have you had a look at the brushes.
Same sort of thing happened to my 30 yo Makita Drill. I put in a new set of brushes and it works a treat now.
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22nd May 2017, 04:41 AM #22Senior Member
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Skot, you have a valid point there! Start with something obvious! Why didn't I think of that? Brushes wear and/or get sticky with age. Actually, that is the first place to start with fault-finding on small electric motors.
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22nd May 2017, 02:55 PM #23
I would be pretty skeptical of it being the brushes as when the problem first appeared it would be lucky to have done 1/2 an hour of work. Unfortunately I had hardly used it while under warrantee so got caught out.
I think when the problem first arose I took the brushes out just in case but they were perfect.
The problem sounds like someone is turning the switch on and off when the router is running even at top speed but less pronounced due to the speed. It always starts when you turn it on without having to rotate the armature by hand.
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23rd May 2017, 05:44 AM #24Senior Member
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Looks like the speed controller has died. Can you get a new controller board from Triton? If no replacement board is available, I don't know how easy it is to get into the works of that machine but perhaps it could be made to work with an external speed controller? Silicon Chip magazine did a circuit for a speed controller for brush motor tools a while ago (Jaycar had them as a kit). This would be fine if it was being used on a table.
Those were good machines, too good to scrap just because of the speed controller problem. Mine went up when we lost the house in a bushfire back in Feb. Best machine ever if you were using it on a table, so easy to change bits.
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23rd May 2017, 02:01 PM #25
Yes the speed controller is available and one day I might bite the bullet and buy one, because as you say, they are a good router and this is the only thing wrong with it. I had it in a table most of the time originally, and as it was playing up I had an offer of a secondhand TRA001 so I put that in the table. Unfortunately it doesn't have above the table adjustment winder and is fairly noisy.
The Triton does have a number of very useful features for use in the table.
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23rd May 2017, 02:31 PM #26
I'd think twice about buying a replacement speed controller...
I've been through the same sorry saga with a MOF-001. Got in touch with a UK parts supplier, purchased a new speed controller, fitted it, router was fine for about 6 months then started exhibiting the same fault all over again. There is clearly a design issue with the speed controller electronics which has still NOT been addressed. Replacement parts you purchase will have exactly the same issues as the original. After replacing countless parts in my MOF-001 (which only ever had very light router table use), I've cut my losses and junked it. Replaced with a Makita router and raiser system, which is proving 100% reliable, and runs quieter/smoother than the MOF-001 ever did. Conclusion: MOF-001 has some nice features, which was why I bought it, but reliability and longevity aren't among them. Triton have been summarily removed from my Xmas card list.....
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23rd May 2017, 08:55 PM #27
I have asked the question a number of times as to whether the replacement speed controller was more reliable than the original but never seemed to get an answer. It looks like I have now so it will probably get returned to the back of the cupboard unless there are others that have had good success with theirs.
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