Shopsmith Forums

Hi Gang
I was putting a few hours in the shop building a cabinet for the wife's sewing room and ran across what was an odd glitch that I can't reproduce.
The SS was plugged into a 50 foot 12 gauge extension cord with a three receptacle end which is in good condition.
Also plugged into this cord was a 12" DeWalt miter saw.
I was using the miter saw for about 45 minutes to fit some molding to the cabinet and then switched back to the SS to make some rip cuts and the PP display was dark!!
The breaker was OK and I tried the miter saw and it was OK, then flipped the main switch on the PP and the panel remained dark.
I quickly switched the PP to another outlet on the extension cord and the panel remained dark.
Thought I was going have to install my spare headstock so I unplugged the PP and set the main (AC) switch to "OFF".
About a minute later I tried one more time and plugged the PP back in and turned the AC switch on and I got the turn on jingle and all was OK after that.
Question; Is it possible that the electrical noise from the universal motor on the DeWalt miter saw could cause the electronics in the PP to exhibit this kind of a problem?
I know that the universal motors used in the saw as well as Skillsaws and other power tools can throw some hellish EMI noise back on to the power lines. Wonder if anyone has had any similar occurrences?
Bill V

[quote="wa2crk"]Hi Gang
I was putting a few hours in the shop building a cabinet for the wife's sewing room and ran across what was an odd glitch that I can't reproduce.
The SS was plugged into a 50 foot 12 gauge extension cord with a three receptacle end which is in good condition.
Also plugged into this cord was a 12" DeWalt miter saw.
I was using the miter saw for about 45 minutes to fit some molding to the cabinet and then switched back to the SS to make some rip cuts and the PP display was dark!!
The breaker was OK and I tried the miter saw and it was OK, then flipped the main switch on the PP and the panel remained dark.
I quickly switched the PP to another outlet on the extension cord and the panel remained dark.
Thought I was going have to install my spare headstock so I unplugged the PP and set the main (AC) switch to "OFF".
About a minute later I tried one more time and plugged the PP back in and turned the AC switch on and I got the turn on jingle and all was OK after that.
Question]

Yes, noise from the very dirty UM on the saw could have forced the PP into a "save yourself" mode. We have to remember that the PP is a very digital, computer driven device with all of the pluses and minuses of that technology. Personally, and I don't know this for sure, but I feel the PP is one of the most protected digital devices to come along in a long time. The fact that you can switch voltage and it senses and adjusts is an example. I think you are fine, but the PP just protected it self.

JMEHO. Thirty years of digital experience for what it is worth.

Dick

rjent wrote:Yes, noise from the very dirty UM on the saw could have forced the PP into a "save yourself" mode. We have to remember that the PP is a very digital, computer driven device with all of the pluses and minuses of that technology. Personally, and I don't know this for sure, but I feel the PP is one of the most protected digital devices to come along in a long time. The fact that you can switch voltage and it senses and adjusts is an example. I think you are fine, but the PP just protected it self.

JMEHO. Thirty years of digital experience for what it is worth.

Dick

Ah, so- haven't thought about 'crowbars' and such for decades. And nowadays instead of reaching for a soldering iron you just wait a few minutes or hit Reset.
I like it.

You need to remember that the Power Pro is controlled by what is basically a computer. Like all computers, it will lock up, glitch, and do all kinds of stupid things that will force you to power fail it and reboot it.
Get used to it or go back to something mechanical that doesn't have the option to screw up like that.