Question about Panasonic Cordless 12V Compact Impact Driver Kit with 2 High Capacity 3.5Ah Ni-MH Battery Packs

2 Answers

Panasonic EY7540 impact driver. Does not go into reverse on 1st

Panasonic EY7540 impact driver. When I switch from forward to reverse it keeps going forward for the first time after I press the trigger. When I let go it then will reverse and stay in reverse after that. Then I will switch to forward and it works fine. The back to reverse and for the first trigger pull it will stay in forward. I release and pull trigger again and if will go into reverse mode. What is causing this. It has happened since it was new. Thx Greg

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

EY7540 14.4 volts. Both batteries were fully charged. Operating the driver in various positions would result in the Red battery charge and temp. light coming on and the operation of the driver would die. Pointing the driver up, it was OK. Pointing it down it failed. All connections and solder joints were checked. All joints in the battery cct board were checked. By the way I am an electronic technician. Any ideas?

Posted on Sep 12, 2010

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,714 Answers

The forward/ reverse switch is hanging up and the rotation of the drill is switching it, then it changes direction. The switch needs a little TLC and a good cleaning. Blow it out.

Posted on Sep 26, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My impact driver when in reverse works fine but when in forward it will work for a few seconds then stop and keeps doing that. why?

I'd be looking for a defective forward/reverse switch, or a bad connection/wire on the forward side between the switch and the motor.

Jul 01, 2015 | Dewalt DW056 18V Heavy Duty 18V Cordless...

2 Answers

How do I get the M18 light to turn off it stays on all The time

If it's the white work light ? Has someone worked on it recently ? Does the work light go off when pulling trigger? Are the forward and reverse switched ? It could be the blk and red wires on the brush card assembly are switched.

Feb 20, 2015 | Milwaukee M18 Compact Drill & Impact...

1 Answer

My makita 6914D impact drill works fine when it will start. Sometimes when I pull the trigger nothing happens on either forward or reverse. When I change batteries it may or may not work . I checke

It could be your brushes are worn down and not fully contacting the armature. If they are very short and the armature comutator looks burnt, you need part number CB424 to replace your brushes. Most likely your problem is the switch. Sometimes the contacts in the switch get dirty or burnt and if you move the switch just right, a clean contact may be made but usually it won't work. The switch is part number 651939-6. Both are available on sites like

Mar 01, 2014 | Makita 6914D 12V 1/4 in. Impact

1 Answer

Ws550 eletric. i need the forward and reverse switch for my ingersoll electric wrench

Ask your IR dealer for this part > IR 201718 SWITCH, last price I saw was around $38.00

Sep 12, 2013 | Ingersoll Rand Ingersoll-Rand 1/2 in....

1 Answer

It's not spinning

sometimes the forward/ reverse switch gets stuck 'inbetween' make sure it is fully in forward or reverse. you did not attempt to operate it in the video, is it air or electric?

Mar 07, 2013 | Tools & Hardware - Others

1 Answer

Have a problem with Hitachi WR22SA Impact Wrench Rotates in the forward (on) direction but not in reverse (off) Can you tell me what is the likely problem?

Please try to locate the forward/reverse push button switch. Please try also referring to your users guide. Forward/reverse has a different or separate switch. Thanks for asking.

Jun 14, 2011 | Hitachi WR22SA 3/4" Electric Impact Wrench

1 Answer

Hitachi Cordless Impact Driver gearing problem

Hi there,

The speed shift slider switch wasn't lined up correctly when the unit was reassembled.

Unfortunately, you going to need to repeat the disassemble/reassemble process once more.

I've been there. It doesn't take much to be out of alignment. Set everything to the lowest setting (clutch, speed) and take your time.

Best regards

Apr 22, 2010 | Hitachi DV18DCL 18V 1.5Ah Lithium-Ion...

1 Answer

Makita 12v impact driver- no reverse

I would suggest that you go to and type in your model number and look at the breakdown for complete disassembly procedures. The only problem it could be it the tab on the switch or the shift lever is broken I would have to think it is the switch. Let me know if I can help more.

Mar 29, 2009 | Makita 12V Cordless Impact Driver -...

2 Answers

Model cd55 Ryobi cordless drill driver

Your drill probably has a bad or stripped drive gear. Does the drill operate in forward w/a battery that is not fully charged but yet good.?

Sep 12, 2008 | Makita 6932FDWDE 14.4V Impact Driver

Not finding what you are looking for?
Panasonic Cordless 12V Compact Impact Driver Kit with 2 High Capacity 3.5Ah Ni-MH Battery Packs Logo

422 people viewed this question

Ask a Question

Usually answered in minutes!

Top Panasonic Drills Experts

Pieter Vleeshouwers
Pieter Vleeshouwers

Level 3 Expert

1815 Answers

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers

Richard Warren
Richard Warren

Level 3 Expert

2494 Answers

Are you a Panasonic Drill Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides