Easy
30-60 minutes
It is a genuine item that is supplied by the original equipment manufacturer for use with DeWALT compound miter saws. This item provides an identical replacement for a missing or a faulty power supply that was installed on a new unit. Make sure to refer to the owners manual of your model for the correct application of this part. Keep in mind it is a high-quality component which is made of durable materials and is sold individually.
Power Supply N078832
OEM part for: DeWALT
Part Number: N078832
$36.54
In Stock
Ships within 1 business day 
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Frequently Purchased Together ?
Compatibility
This part will fit the following 10 machines
DeWALT
DWS780 Type 1 12in Compound Miter Saw View Diagrams & Manuals
DW716XPS (Type 20) 12-In. Miter Saw View Diagrams & Manuals
DWS716XPS (Type 20) 15a 12in Db Miter Saw Power Tool View Diagrams & Manuals
DWS780-AR (Type 1) Mitre Saw Power Tool View Diagrams & Manuals
DWS780-AR (Type 20) Mitre Saw Power Tool View Diagrams & Manuals
DWS780-B2 (Type 1) Mitre Saw Power Tool View Diagrams & Manuals
DWS780-B2 (Type 20) Mitre Saw Power Tool View Diagrams & Manuals
DWS780 (Type 2) Mitre Saw Power Tool View Diagrams & Manuals
DWS780 (Type 20) Mitre Saw Power Tool View Diagrams & Manuals
DWS780 (Type 21) Mitre Saw Power Tool View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Miter Saw Parts
- Saw Parts
Repair Videos ?
Watch the Repair Video for
Power Supply
Articles:
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Step-by-step instructions for removing and installing the power supply on your DeWALT miter saw....
September 22, 2017
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Customer Part Reviews ?
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Laser power supply
I have gotten parts from EReplacement for for ten years as maintenance supervisor for a local manufacturer and they always delivered. Great place to do business with.
Jacob DeHollander -
August 11, 2021
Verified Purchase
Great product exelent fit no problems at all 100% sastisfied
On time easy fitment exactly what was ordered all packaged well to minimize damage will be using E replacement Parts more often great job!
Jeff -
July 16, 2021
Verified Purchase
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Customer Repair Instructions ?
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.
Upgraded to my dws779 to the dws780 light system
John - February 12, 2017
👍 16 of 17 people found this instruction helpful
Tool Type
Miter Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Power Drill
Just removed the handle unit installed light,power supply, and new handle used an old lamp cord to supply voltage to power supply . Completed installation and in use in about 45 minutes it makes cut line up so easy. Unlike the laser system there is no dialing this thing in turn it on line up your cut mark with the shadow line and cut
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Wanted to upgrade my DeWalt DWS779 (compound miter saw) to include XPS light reference that is standard on the much higher priced DWS780 miter saw
Jack - June 20, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Miter Saw
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Torx sockets,. Soldering iron, shrink wrap tape.
1. Removed old handle assembly.
2. Installed lower half of the new handle assembly
2. Installed 2-wire quick connector for the LED power supply pigtail leads.
3. Soldered a wire on to each of the main power wires that provide power into the handle. These two wires had the mating coupler end that will be connected to the power supply coupler half.
4. Installed the upper half of the handle.
5. Tested XPS light cut reference system and it worked just like the higher priced Dewalt DWS780 with the XPS light reference system.
2. Installed lower half of the new handle assembly
2. Installed 2-wire quick connector for the LED power supply pigtail leads.
3. Soldered a wire on to each of the main power wires that provide power into the handle. These two wires had the mating coupler end that will be connected to the power supply coupler half.
4. Installed the upper half of the handle.
5. Tested XPS light cut reference system and it worked just like the higher priced Dewalt DWS780 with the XPS light reference system.
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Power supply went bad
Jacob - August 13, 2021
Tool Type
Miter Saw
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
, Torch driver
Parts Used
Unplugged saw removed two torches screws unplugged two power leaders from power supply removed old power supply installed new power supply replaced the two power leads reinstalled torch screws and plugged power cord back in. Turn on laser light. Done
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Added light to 779 DeWalt miter saw
LaFreddrick - March 22, 2019
Tool Type
Miter Saw
Difficulty
Easy
Time
15-30 minutes
Tools Used
Power Drill, Wire stripper plus connectors
Removed stock 779 handle and replaced with 780 handle and power supply / light kit.
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It was an upgrade
Douglas - August 25, 2018
Tool Type
Miter Saw
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Nutdriver, Wire stripper
Removed old handle set, work light blank and wiring cover channel.
Installed work light and work light wiring channel.
Clipped end connector from power supply leads and stripped back wires.
Stopped back original wires in handle set.
Attached power supply wires and taped the connections.
Installed the new handle set and power supply.
Installed work light and work light wiring channel.
Clipped end connector from power supply leads and stripped back wires.
Stopped back original wires in handle set.
Attached power supply wires and taped the connections.
Installed the new handle set and power supply.
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Added LED light to my DWS 779 to make it into a DWS 780
Mitchell - August 22, 2018
Tool Type
Miter Saw
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Nutdriver, Allen wrench
I ordered the handle set, work light and power supply.
The easy to follow online videos gave great instruction.
I thought I was ordering only the top half of the handle for $13. Surprised to get top and bottom.
Did not need to change the bottom part, so left wires in place.
Only remotely difficult part was splicing the power supply leads into the existing saw power leads (black wire to black, white to white). Did not cut the main power leads, but just cut through the insulation and slid apart 1/8" to solder in the smaller power supply wires. Watched several videos before cutting and it went well.
Not too impressed with the final LED light. Not nearly as easy to use as my Porter Cable red laser lights on both sides of the blade. But, better than no light at all.
eReplacement was really easy to work with and they had all the parts and instructions to make this conversion easy to do.
The easy to follow online videos gave great instruction.
I thought I was ordering only the top half of the handle for $13. Surprised to get top and bottom.
Did not need to change the bottom part, so left wires in place.
Only remotely difficult part was splicing the power supply leads into the existing saw power leads (black wire to black, white to white). Did not cut the main power leads, but just cut through the insulation and slid apart 1/8" to solder in the smaller power supply wires. Watched several videos before cutting and it went well.
Not too impressed with the final LED light. Not nearly as easy to use as my Porter Cable red laser lights on both sides of the blade. But, better than no light at all.
eReplacement was really easy to work with and they had all the parts and instructions to make this conversion easy to do.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
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Our customer service team are at the ready daily to answer your part and product questions. We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
All our part reviews are solicited directly from other customers who have purchased this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part. While we moderate these reviews for profanity, offensive language or personally identifiable information, these reviews are posted exactly as submitted and no alterations are made by our team.
Based on data from past customer purchasing behaviors, these parts are most commonly purchased together along with the part you are viewing. These parts may be necessary or helpful to replace to complete your current repair.
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