Part Location Diagram of 72256-03 DeWALT Rectifier
See part 66 in the diagram
( Grid squares measure 1x1 inch )

Rectifier 72256-03

Manufactured by:
DeWALT
ERP Number:
ERP18986094
Part Number:
72256-03
Original Equipment Manufacturer ?
In Stock
Delivers in 3-5 Business Days!

Easy 

30 - 60 mins 

(6 rated repairs) ?

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Product Description

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This rectifier is an original part from Black and Decker. Composed of metal and plastic parts, the rectifier is compatible with a variety of tools and machines. This component the electric current fro AC to DC voltage. It is encouraged to refer to the specific manual and diagrams for repair instructions. This part is sold individually. A screwdriver is often helpful in making the replacement.

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Black and Decker
  • DeVilbiss
  • DeWALT
  • Craftsman
This part works with the following products:
  • Lawn Mower
  • Drill Press
Part# 72256-03 replaces these:
72256-03, P72256-03,

Customer Part Reviews

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5.0
Average Rating (out of 5):
★★★★★
★★★★★
(6 Reviews)
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Questions & Answers

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Unit plugged in and won't start. Is there a circuit breaker that might be blown
Sally For model number MM576 - November 6, 2023

Hello Sally, thank you for your question. Yes. Check the Circuit Breaker Box to see if the circuit has tripped. Your can check your Brushes 242273-00( we have a video on that) or, perhaps the Rectifier 72256-03. Good luck with your repair.

eReplacementParts Team
November 6, 2023

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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.

Easy 

30 - 60 mins 

(6 rated repairs) ?
  • 1
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Lawn mower stopped working altogether - as if the motor had burned out. I discovered that the carbon brushes were worn to the point of not making good contact with the commutator.

Todd from Fort Worth, Texas

14 of 14 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Pliers, Screw drivers
Parts Used:
72256-03, 242273-00
I removed the old brushes and rectifier, then installed the replacement rectifier using a silicone grease. I connected the new brushes using a crimping tool and new wire crimps, then re-assembled the mower. With $30 worth of repair parts, the mower has since been working like new, which saved us from having to buy a new mower.
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Fail to start

howard from Hollywood , Florida

3 of 3 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
72256-03, 681064-01
1. Remove the cover to expose the rectifier.
2. Mark each contact wires attach to the rectifier not to make any mistakes.
3. Remove and replace the rectifier.
4. Do the same for the switch.
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Lawn mower would trip circuit breaker when plugged in

Justine from Seattle, Washington

1 person found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Screw drivers
Parts Used:
72256-03
I replaced the rectifier in the lawnmower, and now it works, and doesn\'t trip the circuit breaker.
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Electric lawnmower did not start

John from SAN DIEGO, California

0 of 1 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers
Parts Used:
72256-03
Repairs were completed on a Black and Decker Lawn Hog electric lawnmower. Excellent trouble shooting techniques can be found for many makes and models of electric lawnmowers on You Tube. After replacing the rectifier, and performing some maintenance, the mower worked great and continues to do so. I can\'t say enough good things about eRep lacement Parts. Pricing was good and the part arrived at the specified time. There are a few important things to consider when repairing any electric lawnmower: When installing the rectifier, make sure the heat sink the rectifier sits on is clean and has a thin film of heat transfer paste applied. The paste in not provided with the part. I wound up buying the paste at Best Buy. The other consideration is the motor brushes. Most motors are rugged and not prone to failure. However, brushes may get stuck in the brush holder resulting in excessive arcing. After replacing the rectifier, it\'s a good idea to run the mower prior to reassembling the cowlings and covers. Observe the brush assemblies. If there is arcing, disassemble the brush holders and make sure the brushes are free to move back and forth. Poorly contacting brushes will make the motor run slower, brush holders to heat up, and shorten the life of the rectifier.
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Stopped dead in the water one day.

Terry from EAST LIVERPOOL, Ohio

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
30 - 60 mins
Tools:
Screw drivers
Parts Used:
72256-03, 681064-01, 242273-00
Switched out the part in the handle first.
Switched out the burned out brushes next. Didn\'t have crimper so used wire nuts instead.
Switched out the diode next.
All done!

Plugged it in and it ran just fine. Sparks when it shuts off though from the new brushes.
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No power to mower motor (electric)

James from CHICAGO, Illinois

0 of 1 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
15 - 30 mins
Tools:
Screw drivers
Parts Used:
72256-03
Removed cowling
Removed non-functioning Rectifier
Removed 4 electric leads to Rectifier
Installed 4 electric leads to new Rectifier
Reattached Rectifier
Replaced cowling
Tested (and almost sliced my toe)
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP18986094
Manufacturer Part Number: 72256-03
Brand Model Number Description
Black and Decker 1555 Drill Press - 2 Magnetic Drill Press
Black and Decker 1556 Drill Press - 3/4 Magnetic Drill Press
Black and Decker 1557 Drill Press - 1/2 Magnetic Drill Press
DeVilbiss 35212 Lawn Mower - 9amp Lawnmower
DeVilbiss 35216 Lawn Mower - 12amp Lawnmower
Black and Decker 35512 Lawn Mower - Lawnmower
Black and Decker 35516 Lawn Mower - Lawnmower
DeVilbiss 35517 Lawn Mower - 18 Inch Mower
DeVilbiss 35518 Lawn Mower - 18 Inch Mower
DeVilbiss 35519 Lawn Mower - 19 Mulching Mower
Black and Decker 35913 Lawn Mower - Lawn Mower
Black and Decker 37051 Lawn Mower - 19 Crafts Electric Mower
Black and Decker 8000 Lawn Mower - 18 Single Mower 115 Volt
Black and Decker 8008 Lawn Mower - Deluxe 18 Lawn Mower
Black and Decker 8010 Lawn Mower - 18 Deluxe Mower 115 Volt
Black and Decker 8018 Lawn Mower - 18 Flipover Handle Mower
Black and Decker 8019 Lawn Mower - 18 Lawn Mower Flipover Handle
Craftsman 900370510 Lawn Mower - Lawn Mower
Craftsman 900370511 Lawn Mower - Lawn Mower
Black and Decker B8018 Lawn Mower - 18inflip Hdl Mower
DeWALT DW154 Drill Press - Magnetic Drill Press
DeWALT DW156 Drill Press - Magnetic Drill Press
DeWALT DW157 Drill Press - Magnetic Drill Press
Black and Decker LM100 Lawn Mower - Steel Deck Mower
Black and Decker LM110 Lawn Mower - 18 Inch Mower
Black and Decker LM115 Lawn Mower - Lawn Mower
Black and Decker LM175 Lawn Mower - 18" Electric Mower
Black and Decker LMM200 Lawn Mower - 18 Inch Mower
Black and Decker M100 Lawn Mower - 18 Inch Mower
Black and Decker M200 Lawn Mower - Flip Over Handle Mower