Question about Porter Cable Cable 12" Compound Laser Miter Saw 3802L

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Porter cable 3802L laser not working

Porter cable 3802L laser is out. Trying to find out if replacing the power supply is the way to go (<$50) but not finding any 'known issues with saw. Local tool repair will price repair & part at least at $150.

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How do I fix the spring on the switch for a 10 inch ryobi miter saw? I can hear it rattling around and the switch won't work. Also plastic screws holding handle together are broken.


Hello Anonymous,
First locate the model number of your Ryobi Miter saw... then search Google for Ryobi Miter saw replacement parts... one result I got is below:
http://www.mastertoolrepair.com/ryobi-power-tool-parts-ryobi-miter-saw-parts-c-873_895_937.html
Try that link, select your Ryobi saw model and zoom into the provided drawings so you can locate the switch, screws, and spring (if needed). The part numbers are supplied and you can order them online easily on that same link... Then just repair your saw with the new parts. As you already noticed, the saw is easy to disassemble and get access to the parts for repair. Have fun and good luck...
RYOBI Miter Saw Parts

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Ryobi miter saw laser is way off. I can get it parallel, but it's about 1 inch away from the actual cut line. How can I fix the laser side-to-side?


Forget it. The lazer site gets obscured and useless after 5 minutes of cutting. It is the most useless improvement I've seen on a power tool in 40 years.

Feb 22, 2015 | Ryobi 10 In Miter Saw With Laser

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The laser stopped working on my Hitachi C12LSH miter saw. Now I need to determine whether the laser burned out or if there is another problem. I need to know if the laser works on 120 volts so I can t


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The laser stopped working on Hitachi 12'dual compund mitr saw,are there batteries that can be replaced or does the unit need to go to a tech? The laser only worked for a month and the saw is only 3 months...


The laser modules in saws are usually powered by induction from the spinning saw blade. Since your saw is only three months old hopefully you either registered it with Hitachi when you bought it or you still have your receipt as this type of failure would be covered under warranty. Call Hitachi, they may send the part to you if you are comfortable with doing the repair or they will tell you where the nearest Authorized Service Center is for warranty work. Hitachi's number is: 800-706-7337 or 770-925-1774.

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1 Answer

Will not cut 45 miter cuts perfect


Possible but I would think not likely
Try this
Put a new blade on
Set a magnet on the table or fence with phillips screw driver stuck to it
Slide the point of the screw driver up to within 1/16" from the blade just above the teeth
Run the unplugged saw by hand and watch for any side to side movement of the blade
Can you move the blade up and down or side to side?
If everything seems normal the plug the saw in and run it again watching the screwdriver
Please be careful don't allow the screw driver to contact the blade at high speed you will create a bullet

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Check the power cable. They could be broken or frayed and you are not getting enough power to it replace and then try to see if it works then. Make sure you buy the right size gauge for you machine

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Loose replacement blade


I completely removed the blade and put it back on, tightening the locknut, and now it works perfectly. The blade has not come loose and have used the machine for the last 3 months. The only thing I can think of is that somehow I didn't have the blade correctly installed in the first place, although it didn't wobble or anything.

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