Thread: TSC-10HB lost its go

Does the motor have 1 or 2 capacitors on the outside?

If they're what I think they are...two.
tsmotor1.jpg

Yes, one will be a start capacitor, the other a run capacitor. It sounds as though the run capacitor has failed.

Probably best to remove both (mark which one goes where first) and have them tested at an electric motor place.

Be careful handling them as capacitors can (and do) hold quite a charge so don't put anyhing across the 2 contacts, let the service people worry about that.

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Thanks Sheddy.

Yep, I've seen guys get thrown against walls from the much smaller caps in old camera flash battery packs. Always good for a laugh when it's not you But thanks for the reminder.

I'll post back when I've managed to get them looked at. Stupid long weekend *grumble*

Alrighty...my brain finally woke up for 2017 and I remembered that I have a sparky mate. I took the motor to him this morning to test and discharge the caps (which they had done by themselves which I thought was interesting in itself). The result was that they are fine and haven't blown.

Matey then had a multi-meter on one of the caps (forget which one sorry) and was slowly rotating the shaft. The meter would go "beeeeep...silent..." repeating regularly a few times until he got one quite long section of silence. Initial diagnosis was that there had been some dust inside the motor and it had burned up leaving a carbon deposit across a large section of the stator's interior which would have created a dead-zone.

Confident that the caps weren't going to kill me any more, I went home and disassembled the motor thinking that I'd be on carbon cleaning duty for the afternoon. But nooooo.... Instead I found a motor almost entirely full of sawdust (after first finding the terminal box packed with the stuff).

I am completely and utterly ashamed of myself and made a quick, but hopefully helpful, post over in the dust extraction section to show how being a slack slob can damage more than your lungs...I run the saw (and entire workshop, albeit thickness sander, with absolutely no dust extraction and often let the saw cabinet get full (below motor level) before I clean it out.

I've been kicking my own bum severely over this all afternoon.

I've since stripped the motor bare and blown exactly one metric butt-load of dust out of all the internal nooks and crannies, and given everything a good clean, ready to be reassembled.


But here comes a few other interesting things I've found through this endeavor:

- The bearing on the pulley end of the shaft was only seated inside the motor housing by a "nervous gnat's fart" of the bearing case. The shaft was still turning smoothly and it's still an ok bearing (might replace both anyway while it's open) but it certainly wasn't anywhere near where it should have been seated.

- The key for the pulley/shaft was completely absent, and the only thing holding it in place was one of the grub screws extended down into the shaft channel. The shaft and pulley channels were sitting half on top of each other diagonally. There is evidence on both the shaft and inside the pulley's core that there has been some slippage at some stage. I bought this saw second-hand a number of years ago (<6) and am left wondering (because of a few other minor odd things) if the previous owner had been tooling around with it, or if it came from the factory like this.

- And when I was first pulling the motor from the saw, the three drive belts all seemed looser than I expected and the motor was tilted at almost full stretch. While I've got everything, including the saw, in pieces, I might look at some fresh belts too.

Anyway...after all of this, I can't be sure if I've solved the original problem until I get the motor back together again. I just thought that I should update (and consolidate a couple of extra forum threads and cross-posts).

More to come when I've got that bad boy back in one piece...

I used to tell the apprentice, "Blow it out or ring the fire brigade, please yourself."

It's alive!!!

Every point of dust entry on the motor (besides around the fan) has been sealed with tape to get me by until I get some dust extraction together (coming up soon on the list).

My pathetic budget dictated that I didn't end up doing the bearings or belts, but they're still all in great nick so it's no loss.

While I had the top off the saw, I gave the internals a good clean and lubricating so mechanically it's moving smoothly again too. I gave the top of the table and wings a good clean up too. I've got half a mind to repaint the edges and underside edges of them as the original stuff is half missing. Maybe next time.

It's also given me a chance to have a good look at the arbor arm and I'm pretty sure I can affix a rise and fall splitter to it fairly easily. That's been my only gripe about the saw.

Now I just need to get the tops back on, everything realigned, make some new throat plates, and get back to making a mess again


Big Shed: Even though it wasn't the caps, thanks for the suggestion because in the process I learned a bunch of new stuff about electrical testing for that kind of thing and for a misfiring stator.