Easy
15-30 minutes
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.
Rectifier 72256-03
OEM part for: Black and Decker, DeWALT
Part Number: 72256-03
$23.36
In Stock
Order within the next 1 hour and your part ships today! 
Jump To:
Frequently Purchased Together ?
Compatibility
This part will fit the following 77 machines
DeWALT
DW154 Type 1 Magnetic Drill Press View Diagrams & Manuals
DW156 Type 1 Magnetic Drill Press View Diagrams & Manuals
DW157 Type 1 Magnetic Drill Press View Diagrams & Manuals
Black and Decker
LM175 18" Electric Mower View Diagrams & Manuals
MM275 18" Electric Mulching Mower View Diagrams & Manuals
MM575 18" Electric LAWNHOG Mulching Mower View Diagrams & Manuals
MM675 Type 1 18" Electric "LAWNHOG&trade" Mulching Mower with Flip-Over Handle View Diagrams & Manuals
MM675 Type 2 18" Electric "LAWNHOG&trade" Mulching Mower with Flip-Over Handle View Diagrams & Manuals
MM875 Type 1 19" Electric LAWNHOG&trade Mulching Mower with Rear-Bag View Diagrams & Manuals
MM875 Type 2 19" Electric LAWNHOG&trade Mulching Mower with Rear-Bag View Diagrams & Manuals
1555 Type 1 2 Magnetic Drill Press View Diagrams & Manuals
1555 Type 2 2 Magnetic Drill Press View Diagrams & Manuals
1555 Type 3 2 Magnetic Drill Press View Diagrams & Manuals
1556 Type 1 3/4 Magnetic Drill Press View Diagrams & Manuals
1556 Type 2 3/4 Magnetic Drill Press View Diagrams & Manuals
1556 Type 3 3/4 Magnetic Drill Press View Diagrams & Manuals
1557 Type 2 1/2 Magnetic Drill Press View Diagrams & Manuals
37051 Type 1 19 Crafts Electric Mower View Diagrams & Manuals
37051 Type 2 19 Crafts Electric Mower View Diagrams & Manuals
8000 Type 2 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type 3 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type 4 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type 5 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type 6 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type 7 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type 8 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type 9 18 Single Mower 115 Volt View Diagrams & Manuals
8000 Type AA 18 Single Mower 115 Volt View Diagrams & Manuals
8008 Type 1 Deluxe 18 Lawn Mower View Diagrams & Manuals
8008 Type 2 Deluxe 18 Lawn Mower View Diagrams & Manuals
8008 Type 3 Deluxe 18 Lawn Mower View Diagrams & Manuals
8008 Type 4 Deluxe 18 Lawn Mower View Diagrams & Manuals
8008 Type 5 Deluxe 18 Lawn Mower View Diagrams & Manuals
8008 Type 6 Deluxe 18 Lawn Mower View Diagrams & Manuals
8010 Type 2 18 Deluxe Mower 115 Volt View Diagrams & Manuals
8010 Type 3 18 Deluxe Mower 115 Volt View Diagrams & Manuals
8018 Type 1 18 Flipover Handle Mower View Diagrams & Manuals
8019 Type 1 18 Lawn Mower Flipover Handle View Diagrams & Manuals
LM100 Type 1 Steel Deck Mower View Diagrams & Manuals
LM100 Type 2 Steel Deck Mower View Diagrams & Manuals
LM100 Type 3 Steel Deck Mower View Diagrams & Manuals
M100 Type 1 18 Inch Mower View Diagrams & Manuals
M100 Type 2 18 Inch Mower View Diagrams & Manuals
M200 Type 1 Flip Over Handle Mower View Diagrams & Manuals
M200 Type 2 Flip Over Handle Mower View Diagrams & Manuals
M200 Type 3 Flip Over Handle Mower View Diagrams & Manuals
M200 Type 4 Flip Over Handle Mower View Diagrams & Manuals
M200 Type 5 Flip Over Handle Mower View Diagrams & Manuals
M200 Type 6 Flip Over Handle Mower View Diagrams & Manuals
M200 Type 7 Flip Over Handle Mower View Diagrams & Manuals
M300 Type 1 18 Deluxe Mower View Diagrams & Manuals
M300 Type 2 18 Deluxe Mower View Diagrams & Manuals
MM450 Type 2 Mulch N Mow View Diagrams & Manuals
MM525 Type 1 Corded Mulch Mower View Diagrams & Manuals
MM525 Type 2 Corded Mulch Mower View Diagrams & Manuals
MM525 Type 3 Corded Mulch Mower View Diagrams & Manuals
MM525 Type 4 Corded Mulch Mower View Diagrams & Manuals
MM550 Type 1 12 Amp Mulch Mower View Diagrams & Manuals
MM550 Type 3 12 Amp Mulch Mower View Diagrams & Manuals
MM550 Type 4 12 Amp Mulch Mower View Diagrams & Manuals
MM600S Type 2 18 Electric Mower View Diagrams & Manuals
MM600 Type 1 18 Inch 4 Horse Power Mulching Mower View Diagrams & Manuals
MM600 Type 2 18 Inch 4 Horse Power Mulching Mower View Diagrams & Manuals
MM850S Type 4 19 Electric Mower View Diagrams & Manuals
MM850 Type 1 19 Mulching Mower View Diagrams & Manuals
MM850 Type 2 19 Mulching Mower View Diagrams & Manuals
MM850 Type 3 19 Mulching Mower View Diagrams & Manuals
MM850 Type 4 19 Mulching Mower View Diagrams & Manuals
MM850 Type 5 19 Mulching Mower View Diagrams & Manuals
MM1800 Type 1 18 Inch Mulching Mower View Diagrams & Manuals
M2371B Type 2 18 Inch Mower View Diagrams & Manuals
MM875 Type 3 19 Mulching Mower View Diagrams & Manuals
LM175 (Type 1) 18-Inch 6.5a Mower Power Tool View Diagrams & Manuals
LM175 (Type 2) 18-Inch 6.5a Mower Power Tool View Diagrams & Manuals
MM1800 (Type 2) Diamond Core Drill Power Tool View Diagrams & Manuals
MM275 (Type 1) 18 Elect.Mower Power Tool View Diagrams & Manuals
MM575 (Type 1) 18 Elect.Mower Power Tool View Diagrams & Manuals
Show More Compatible Models
This item works with the following types of products:
- Drill Parts
- Drill Press Parts
- Lawn Mower Parts
This part replaces obsolete part #: 72256-02
Customer Part Reviews ?
Average Rating (out of 5):
Click to filter by ratings:
5 stars
6
4 stars
0
3 stars
0
2 stars
0
1 stars
0
< PREV
- 1
easy repair part worked as expected
arrived quickly, fit perfect, lawnmower runs great
Guest -
June 24, 2022
Verified Purchase
fast delivery
ereplacementparts.com has everything to keep my blac & decker mower alive & well !
Guest -
June 20, 2020
Verified Purchase
Rectumfier
Was fine and solved the problem
Guest -
November 12, 2019
Verified Purchase
They both fit perfectly on my black and decker mower
Thanks for your repair video which explains the parts I need and how to repair it . I also ordered a lead wire in addition to the items above. All arrived well packaged and very quickly
My lawn hog black and decker is working now
Thanks very much
Guest -
November 8, 2019
Verified Purchase
Rectifier for electric mower
Easy to find the needed part, reasonable price and quick to arrive
Guest -
August 14, 2019
Verified Purchase
MM275
July 18,2019
Purchased mower April 2010 and it stopped completely (1st problem).
Ordered switch, rectifier & brushes with one day delivery.
Installed brushes and it ran with intermittent very loud noise.
Replaced rectifier and ran normally.
This is my second B&D, first was MM525.
Very happy cutting my 1000 sq. ft. of grass with an electric.
Thanks for quick turn around.
Richard, Palm Harbor, FL
Richard, Palm Harbor, FL.
Guest -
July 18, 2019
Verified Purchase
t
t
t -
t days ago
Verified Purchase
eReplacementParts Team
t
Questions & Answers ?
Our customer Service team is at the ready daily to answer your part and product questions.
Ask our Team
We have a dedicated staff with decades of collective experience in helping customers just like you purchase parts to repair their products.
Does this fit my product?Questions & Answers for Rectifier
No questions have been asked yet
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.
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 - April 21, 2016
👍 13 of 13 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver, Pliers, Crimping tool
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.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Fail to start
howard - November 19, 2016
👍 3 of 3 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
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.
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.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Lawn mower would trip circuit breaker when plugged in
Justine - June 4, 2018
👍 1 of 1 people found this instruction helpful
Tool Type
Lawn Mower
Difficulty
Easy
Time
Less than 15 minutes
Tools Used
Screwdriver
Parts Used
I replaced the rectifier in the lawnmower, and now it works, and doesn't trip the circuit breaker.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Electric lawnmower did not start
John - June 15, 2020
Tool Type
Lawn Mower
Difficulty
Medium
Time
1-2 hours
Tools Used
Screwdriver, Pliers
Parts Used
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 eReplacement 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.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
No power to mower motor (electric)
James - September 29, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
15-30 minutes
Tools Used
Screwdriver
Parts Used
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)
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)
Did you find this story helpful?
Thanks for voting and helping fellow customers!
Stopped dead in the water one day.
Terry - September 18, 2018
Tool Type
Lawn Mower
Difficulty
Easy
Time
30-60 minutes
Tools Used
Screwdriver
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.
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.
Did you find this story helpful?
Thanks for voting and helping fellow customers!
OEM stands for Original Equipment Manufacturer and means the part you’re buying is sourced directly from the manufacturer who made your product. At eReplacementParts, we sell only genuine OEM parts, guaranteeing the part you’re purchasing is of better design and of higher quality than aftermarket parts.
Our product descriptions are a combination of data sourced directly from the manufacturers who made your product as well as content researched and curated by our content & customer service teams. This content is edited and reviewed internally before being made public to customers.
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.
All our installation videos are created and produced in collaboration with our in-house repair technician, Mark Sodja, who has helped millions of eReplacementParts customers over the last 13 years repair their products. Mark has years of experience in selling and repairing both commercial and residential products with a specialty in gas-powered equipment.
This data is collected from customers who submitted a repair instruction after replacing this exact part. Customers can rate how easy the repair was to complete and how long it took. We aggregate this data to provide a repair rating that allows customers to quickly determine the difficulty and time needed to perform their own repair.
