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I wish to replace the battery in my MTD8 timer. I have charged for 8 hrs== but no joy. How do I get a circuit diagram of the PC Board in order to be able to identify the battery ?

This unit has been in store for a long time===looks as if the battery is dead. No indication at all when plugged in. Should it show that the unit is charging ? I have opened up and now able to access the PC board. Is the battery component JOX-14f IF SO WHERE WOULD I OBTAIN ? Could the problem be somewhere else ?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: Casio LK-30 Key Board Piano

I have the same problem. I was thinking one solution for us, but I don't like it might be to solder the power supply on and skip that female plug entirely. To do that, you cut the male end off the transformer/power supply wire (if you don't want to ruin your transformer/power supply you can buy another power supply at Best Buy for $10 - Dynex DX-C1109). Then strip the ends from each wire from the power supply so you have some bare wire showing on each wire. One goes on the spiral thing sticking up from the JCM470 board, the other goes anywhere you want on the red wire coming from the battery compartment. You should test before you solder to make sure you the proper one on the proper wire and that you therefore have power to the unit and it makes a sound. But its a sloppy fix. While it should work perfectly, the power pack then can't be changed unless you solder and unsolder it each time. Another solution is to find a broken LK-30 or LK-33 and rob the circuit board if it still works on the parts machine. Trouble is if you find one and its not near you it costs some money to ship these. At some point its just easier to buy a used one on Ebay or craigslist.com, I guess.

Posted on Feb 24, 2008

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SOURCE: Dead Toshiba A100 laptop computer

In order to replace the power jack in your laptop you’ll have to remove the jack from the motherboard as I explained in the previous post: Replacing DC power jack.
While removing the jack you can accidentally pull out the internal copper coating (I’ll call it a sleeve) from the inside of the “+” terminal as it shown on the picture below.
9807c6d.jpg
The internal copper sleeve has been removed and cannot be installed back. If you solder the power jack back on the motherboard without this sleeve it might work but the connection between the “+” lead and motherboard will not be reliable.
In the following guide I explain how to fortify a damaged power jack connection. You can use this repair technique in some laptops with similar power jacks.
Laptop is dead. How to troubleshoot the problem.In this post I’ll explain how to troubleshoot a dead laptop and find the problem. The following troubleshooting tips are not model and brand specific, they should work for most laptops.
Let’s take a look at two different scenarios.
Example 1. The laptop is absolutely dead. 
When you plug in the power adapter and press on the power button, there is no signs of life at all. The laptop will not make usual noises, LEDs will not light up, the fan will not spin, the screen is blank and black, etc… In short, the laptop is dead.
What you can do in this case?
1. Make sure the wall outlet is working and the laptop DC adapter is getting power from the outlet. Try another wall outlet.
2. Test the laptop DC power adapter, make sure the voltage output is correct. You can test the DC power adapter with a voltmeter.
3. Let’s say the DC adapter is fine and the adapter outputs correct voltage. In this case unplug the power adapter from the laptop, remove the battery, wait for 1-2 minutes, plug in the adapter and try turning on the laptop again.
OK, you tested the adapter and it’s bad. If you decide to replace the original DC adapter with a generic one, you’ll have to follow this rule:
The voltage output on your new adapter has to be exactly the same as on the original adapter. The amperage on the new adapter could be the same or higher.
If nothing helps and the laptop is still dead, apparently the motherboard is fried or there is a problem with the DC power jack. It’s possible the DC power jack is broken and the motherboard is not getting any power from the adapter. In this case you’ll have to disassemble the laptop and replace the power jack. Check out thisguide for fixing laptop power jack.

Posted on Jan 12, 2009

  • 32 Answers

SOURCE: battery charger on board doesn't work. Replaced everything, stil

try replacing the battery fuse

Posted on Jul 13, 2009

  • 103 Answers

SOURCE: Batteries won't charge w/ on board charging unit.

Since you have replaced the batteries and the charger there is most likely a problem with the wiring.

Posted on Nov 10, 2009

issken
  • 1472 Answers

SOURCE: dell 1525 not charging. dc usb board replacement

rubberman

Sorry to hear that you are still having trouble. The only other thing to try is your battery on your buddies notebook. If it works there then it is the charging mechanism on your notebook and this would mean replacing the motherboard.

Issken

Posted on Jan 11, 2010

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I have an MTD8 timer, that fits into my main electrical board


MTD8 Timer - Instruction manual

1. This timer has a total of 8 ON / OFF programs.

2. MANUAL ON / AUTO / MANUAL OFF for easy setting.

3. Switchable 12 / 24 hour mode.

4. 16 timer combinations are available as follows:

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Mo, Tu, We, Th, Fr, Sa, Su

Mo, Tu, We, Th, Fr, Sa

Mo, Tu, We, Th, Fr

Mo, We, Fr, Su

Mo, We, Fr

Tu, Th, Sa

Mo, Tu, We

Th, Fr, Sa

Sa, Su


Initial operation:

1. When the timer is first connected to mains power, it will take up to 12 hours to charge the internal battery.

2. The settings can be defaulted by depressing the R (reset) button.


Setting Current Time.

1. Press the C+ (clock) button and hold, then simultaneously press the W+ (week) button until the actual day is displayed. Continue by pressing the H+ (hour) or M+ (minute) button until the current hour or minute is displayed. When setting, the W+, H+ and M+ buttons can be held down for rapid forward counting.

2. Release both buttons. The weekday and time will be set according to your selections.

3. To set incorrect time (etc.) repeat the settings.


Settings for programs:

1. Press the Timer button (Clock) and release. The first ON setting can now be made.

2. Press the W+ button to set the day or blocks of days. Select the ON time by pressing the H+ button and then the M+ button.

3. Press the Timer button (clock symbol) again to finish the first ON setting and enter into the first OFF setting. Repeat step 2 to set the first OFF setting.

4. Press the Timer button again to finish the first OFF setting and enter into the second ON setting. Repeat steps 2 and 3 to program the remaining settings.


When setting block dates, the ON and OFF times apply to all dates in the block.

I.E. Selecting block Mo, Tu, We, Th, Fr, Sa, Su and setting ON to 10:00 and OFF to 16:00 means that the selected times automatically apply to all the indicated days in that block.


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