Tools, Sharpening and Power Machinery - Royobi mitersaw model TS 251U stopped

Hello,

My 10 inch miter saw stopped running.

I made a cut, all good. It became intermittant for a short while after, just starting for a second then stopping.

That happened 2 or 3 times, now it won't run at all

I have ohmed out the switch, it seems to be ok.

Could it be the brushes are worn?

I bought the saw used and it has worked fine for a few months.

Very likely the brushes...easy to check or replace on most saws.

Yep yours too it looks like...heres a drawing and a source...
Ryobi TS251U parts breakdown on ToolPartsDirect.com (http://www.toolpartsdirect.com/cgi-bin/schematic.cgi/ryobi/TS251U)

Thanks, I fixed it!

I needed the saw so I dug deeper. It turns out it was the switch. The hot lead was getting threw but the nuetral was not.

I saw the part was no longer available, so with nothing to loose I saw the switch itself had 4 tabs to take it apart.

There are 2 tiny rocker arms in it that will fall out if you turn it upside down. They where corroded and pitted black from years of arcing. I filed then shiny and used a jewlers screwdriver to clean the contacts at the bottom of the switch.

Reassembly is very tedious, but with patience you can get them both in the right place at the same time.

Put it all back together and the saw works fine again.

Sorry for missleading you in my first post by saying the switch was ok.

Thanks for responding anyway.

tdma1

No problem..I've had to disassemble similar switches in the past as well on stereo's, tools and such. You'er right..kind of a pain in the keister. But if it works..it works.

Don't be surprised if it doesn't last a real long time, many contacts are silver plated and once they start arcing and are filed to clean them up, they don't last as long. By then it will be time for a new 12" compound sliding miter saw anyway, right?

With laser beams on there heads.