Question about Drills

1 Answer

Dc9700a charger schmatic

My charger will not reset and charge my battery. An Electronic man checked diodes, resistors, etc but can't check everything without a schematic. Can you help?

Posted by on

  • David Ford
    David Ford May 11, 2010

    All the charger schematics I have seen are not specific as to the electronics. Usually if the board goes bad they want you to replace the unit. But if you can provide the brand and model number I will see if I can help further. Dave



1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Check that the black microswitch is operating when a battery is placed in the charger. The microswitch button is pressed by a blue plastic piece. Over the years, the part of the blue plastic that the battery slides over wears down so that the switch does not operate. You can check it by slowly inserting a battery and listening for the switch to click.

I made a temporary fix by grinding down a stop on the blue plastic actuator so that it sticks more into the battery well, then wrapping tape around the portion that actually presses on the switch.

I doubt that you will be able to purchase that plastic actuator, but you might be able to find a used working charger on your favorite auction site.

Posted on Apr 03, 2010

  • zerotsm Apr 03, 2010

    Followup: The microswitch is only activated for certain batteries, the ones with the wide black strip along the length above the negative terminal. The ones with the narrow strip are not supposed to activate the microswitch.

  • zerotsm Apr 03, 2010

    The 7.2 batteries are the one with the wide strip, the 9.2 has the narrow strip. If your batteries are totally shot they will not charge, but usually the red light will come on for a few seconds and then go out when the circuit breaker trips (yellow button to reset it).



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 Repairman 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 repair professionals here in the US.
click here to Talk to a Repairman (only 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

How do I reset the flashing system charging light?

you have a shorted diode or internal voltage regulator problem ! Is the check engine light on ? This charging system is computer controlled ! Don't just change it have it checked !

Apr 09, 2015 | 2010 Mazda 6 2.2

1 Answer

My samsung galaxy 3 is not taking charge.I bought a new battery and it Charged for the man at the battery store.I tried everything.Are there any other solutions new or old to try?

Did the battery store use your 'wall wart' AC charger and cable or one of the store's? Your AC charger might be bad, or the connector/charge cable could be bad. Take the phone back to the battery store and have them check your AC charger and cable.

Apr 08, 2015 | Samsung Cell Phones

1 Answer

My sony handycam DCR-TRV340E is not charging at all, dont know if its to do with the battery or the AC power adaptor

First, check that the camera switch is in the off (charging) position.
If this is OK, Check the battery output connections for voltage: use a multimeter.
To check the charger, put a load resistor across the output terminals (about 1000 ti 2000 ohms) and again, using a multimeter, check there is a charging voltage. Alternatively, if the camera operates OK with the charger attached and switched on the charger is OK, AND, the problem is then in the charging circuit from camera to battery. If the battery checks OK as in the beginning, then you will need a Sony repair man who needs to know all the results from your testing above.

May 27, 2014 | Sony Handycam DCR-TRV340E Digital...

2 Answers

Phone will not charge

please post the problem clearly with full details like phone model/ actual problem (error message), what you have tried etc.

check the charger, some nokia phone deny the charging with duplicate charger, check the battery as the same is also a reason of non charging, incompatible battery will not charge in cellular, check the charger jack, if this all not work then you have toreplace battery connector or 47K resister (for nokia).

vote me if found helpfull.

Aug 04, 2011 | Cell Phones

1 Answer

How can i repair my makita battry i put it on charge and the green and red lights flash indicating there is a fault

HI, if you are trying to repair the battery itself, you need a specialty driver set to undo the screws of the battery case. Then check for any faulty wiring or connections. Next, observe the battery cells individually, The series may have some leakage from one or more cells. lastly, using a voltmeter, test the cells for voltage. The cells that are defective will have significantly lower voltage than the rest. You can purchase these cells at any electronic supply outlet. Make sure when soldering new cells back into place, that the correct polarity is observed. Another consideration inside the battery pack is the blocking diode. This is a small unit about the size of a drug capsule. This diode keeps the charging current moving in one direction,( from charger to battery and not battery to charger). with the charger unplugged, make sure there is no current flowing back through the diode when the battery is in place. good luck.

Nov 16, 2010 | Garden

1 Answer

I have an electrical problem and need some help. The other day I was riding and I flipped the headlight switch to high beam, the engine began to miss and then it completly shut down, we used jumper cables...

Yes, I suggest that you are not charging properly. the headlight to high beam killing in one instance and no effect later is the big clue. You were riding along, slowly loosing state of charge, and it was not apparent, then place heavier load, and the system does not have the voltage to run the rough, etc.
So, where are you? You need to independantly slow charge the battery. check water, and connection quality. this charge, on a home charger needs to be like 2 days or so...if it boils, get another battery or be mislead in other tests. batterys that boil do not make it, ultimately, and leave you stranded.
Then put the battery back in the bike, hook everything up, start up and at 1500 to 2000, measure voltage at the battery. Needs to be 13.8 to 14.2 or pretty close to that.

Bikes tend to overcharge batterys. This boils out the water, and cells goe dry and that kills battery, just replace it.

A common issue with bikes is the DIODE PACK, to make an alternator work DC on 12 volt systems, diodes are required. They are one way valves for electricity, and fail often. Then you have a leak to ground and the battery goes dead, as well you do not charge correctly, same leak.

Easy to change, measured with a scope, (yeah sure) or ohm meter. Continuity test, go one way no go the other. Any open, or connect in both measurements is failed.

My bet, diodes...And get a Harley. Just kidding, but you do get to know all of this stuff with a Harley, cause they always break...

Sep 27, 2010 | 1984 Honda VF 1100 Sabre

1 Answer

Charger died.

It is usually a current limiting resistor anyway... so I would think that about 100 Ohms should be all good, you generally need about 250 - 300mA to charge ya batteries. It is simple Ohms law calculation.

Feb 04, 2010 | Drills

1 Answer

How to fix or repair a panasonic 12v cordless

it realy depends on what kind of charger it is, if it has a coil or a switch mode charger, switch mode chargers have ic's in them and changing them or even getting them may be very hard, if its a coil type check output on coil as its likley to be that they have a built in thermal cut out fitted witch burns out, if they get over heated,,,

Dec 06, 2009 | Cameras

1 Answer

Batteries won't charge while wired to truck

Hi, seems that your alternator diodes are faulty.
You can check this by disconnecting the radio & switching off all interior lights etc.
Then remove one battery lead.
Then get an amp meter and connect it between the battery & the removed lead.
If you get a reading the alternator is drawing current , hence faulty diodes.
The alternator will still charge the battery when the engine is going but then discharges when stopped.
Also check your batteries with a hydrometer by checking the battery acid in each cell as you could have a dodgey cell in them.

Nov 28, 2008 | 2003 Ford F250 Super Duty Crew Cab

1 Answer

No Remote

The remote have to work with new batteries. You can check the board where the components are mounted and resoled any that look bad. In your case it could caused by a leaky diodes or a bad solder. All can be replaced at a local electronic or hardware store and they're easy to replace Possible batteries problems: 1 batteries are not making contact properly inside the remote. Test by cleaning connections of the batteries and the remote. 2 battery charger is bad and isn't actually charging the battery. Test by charging on another charger if possible. 3 batteries are bad and are not actually recharging. test by using other batteries if possible. 4 other, unknown, internal remote problem. buy a new one.

Dec 28, 2005 | RCA RS2044 Shelf System

Not finding what you are looking for?
Drills Logo

Related Topics:

735 people viewed this question

Ask a Question

Usually answered in minutes!

Top Drills Experts

Doctor PC
Doctor PC

Level 3 Expert

7733 Answers


Level 3 Expert

77514 Answers

Brad Brown

Level 3 Expert

16644 Answers

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

Answer questions

Manuals & User Guides