Question about GPX TVB544 5 in. Portable Television

2 Answers

Need help with tv/cd/radio

I need a battery for this tv, also battery charger and which is the best way to go,it looks like it take 10 c batteries. it has the top cord missing and don't know what that one is for. the tv / radio works on electric, but don't know about the rest. i would appreciate all you can do for me as it is used and know nothing about it e-mail add:.hamlette1116@msn.com thank you,marge

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  • Marjorie Weintraub Mar 09, 2008

    I WILL TAKE THE GPX PORTABLE TO CIRCUIT CITY AND SEE IF THEY CAN HELP ME WITH WHAT I NEED.

    THANK YOU FOR YOUR HELP,

    BARDAL

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2 Answers

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The power cable is going to be generic. The way you determine what to get is with 2 factors. 1) The voltage. 2) The polarity. Look on the tv next to where you would plug the power cable in, and it should say a number like (EX) 9v which means you need a nine volt cable. There is also a +----0----- - which is the polarity. Make sure the polarity matches because a the line from either the plus or minus will be inside of the line and circle that follows. Sketch an image of that symbol and go into a local radioshack, show them this information, and they will sell you the necessary cable.

Posted on Mar 08, 2008

  • Sean  Cheren
    Sean Cheren Mar 09, 2008

    Not a problem, glad to assist.

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Hello

Posted on Mar 08, 2008

  • dewan nafees ahmed Mar 08, 2008

    can you tell the model number and its make

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1 Answer

Kenwood tk-272g radio wont transmit


This is commonly a sign of a bad or poorly charged battery. Check your charger, battery and battery contacts. Clean contacts with a pencil eraser. Try recharging the battery, making certain the radio is turned off while on the charger. If this does not solve the problem, try swapping batteries with a known good unit. If the swapped battery solves the problem, you know you need to replace your battery and/or charger.

If the problem remains with the swapped battery, you know you have a radio problem. In this case, you will need to look at the battery contacts on the radio, where the battery meets the radio and see if you see a problem there. OR a problem with how the battery fits to or in the radio.

If it is a radio problem, you may need to see your local Kenwood dealer for assistance.

Best regards.

Jul 14, 2012 | Kenwood Radio Communications

Tip

Battery and charger tips


The M series Motorola radios such as the MU21CV, come equipped with a NiCD rechargeable battery. This battery when fully charged should operate the radio a full 8-10 hour business day. The batteries have a life expectancy of 18-24 months.

The original Motorola battery has a date code in the white box above the stop sign on the back of the battery. The first digit is the year, and the next two are the week of the year. Example: 919 would be 2009, the 19th week. (Unless very old and it could be 1999)

When replacing the battery it is important to install the battery correctly. Put the top of the battery into the radio first, then slide the bottom into place. This method will cause the least pressure on the internal battery contacts.

If you battery's contacts are dirty or filmed, simply clean them with a pencil eraser. Do not use solvents or a knife blade on the contacts. The radio's contacts can also be cleaned with a pencil eraser.

The wall adapter style charger which came with the M series radio can burn out over time (much like a lightbulb). Replacement chargers are available. If your charger light is flashing, you most likely have a bad battery. If your charger light does not illuminate, you have a bad charger.

Replacement batteries and chargers are available, as is repair of this style unit.

Best regards,
eradiostore

on May 08, 2009 | Motorola MU21CV (1 Channel) 2-Way Radio

1 Answer

Where can I get a new set of rechargable batteries for my cobra microtalk cxt275


The Cobra CXT275 radios can operate on any type of battery (Alkaline, Ni-Cad, NiHM). Each radio uses 4 AAA batteries. Only special rechargeable batteries can be recharged in the actual radio (see below)
If I remember correctly, they come from the factory with NiHM batteries rated at 300mAH. "mAH" stands for milli-Amphere-Hour and it represents the storage capacity of the battery. (The larger the mAH, the longer run time of the battery)

You have 2 options: A or B
Option A) Buy a set of Nickel-Metal Hydride AAA rechargeable batteries and a external battery charger. When the batteries die, pop them out of the radio, and charge them in the external charger. When they are recharged, pop them back in the radio.
Option B) If you want the ability to charge the batteries in the radio, using the "drop-in charger" then you will need modify the batteries so they can charge in the radio.
Follow these steps: You must be somewhat electrically inclined to do this...Note: By doing this you are going to void the warranty of the radio and new batteries that you just purchased.
1) Buy a set of Nickel-Metal Hydride AAA rechargeable batteries. You can probably find some rated at 600 mAH (this will extend the run time)
2) Looking at the back of the radio with the cover removed, there are 4 slots for batteries.
3) Looking at the battery slot on the far right, you should notice 2 contacts for the negative contact. The one on the bottom, is the contact for the radio to receive power from the battery. The one on the side (about 1/8" inch up from the bottom contact), is the contact for the charger to recharge the battery.
4) You will need to modify 1 battery for each radio. Somehow you need to bridge the bottom contact with the side recharge contact.
5) (look at the negative end of the cobra factory batteries and this should help you realize what you need to do) depending on the manufacturer of the new rechargeable batteries, you may be able to use an X-acto knife and remove 1/4" of the plastic wrapper from the bottom of the battery on the negative end. This should reveal the metal shell of the battery that can mate with the radio's side recharge contact.
If it does not, you need to find another way to have it mate with the bottom contact. You might be able to use some Aluminium Foil to bridge the bottom contact with the side recharge contact. Be sure the Aluminium Foil does not touch the positive contact of the battery to the left! You could have an electrical short!
6) Insert the Modified Battery into the right slot.
7) Insert the other 3 new batteries into the other slots. These do not have to be modified. Only the right most battery needs to be modified.
8) Drop the radio in the charger for the batteries to charge. The red LED on the charge base should come on. If it does not, then the side recharge contact is not making a good connection with the negative battery terminal.
9) If the red LED comes on, then the modification works. Let the batteries charge for 24 hours for their first initial charge.
10) When the batteries die after radio use, then charge them for about 12 - 16 hours in the drop-in charger. Do not let the radios sit in the charger for long periods of time. That can destroy the batteries. Take the radios out of the charger when the allotted time has passed.
11) If you hardly ever use your radios you will want to drop them in the charger for about 8 hours every 3 months. This will keep the batteries fresh without damaging them.
I hope this helps, Thomas (Electrical Engineer)

Feb 22, 2012 | Cobra Radio Communications

2 Answers

At our agency we have Motorola HT 1000. I am looking for a product that will drain the battery completely, so it lasts longer.


You do not want to drain the battery completely because doing so runs the risk of making the battery useless and non-fixable. What you need is a unit called a "conditioning charger" which will run the battery down to a low point and then recharge it. A radio service shop is probably the best place to find such a charger.

Mar 23, 2011 | Motorola HT1000, MTS2000, MTX8000/9000...

1 Answer

Just got a Mag One BPR battery delivered to me and i put it on the charger. After about an hour the green light is on. I thought the battery needed to be charged for 8 hours the first time? Why the green...


The charger which comes with the BPR40 is a rapid charger. (The book doesn't indicate if it is a 90 min. or 3 hour charger.) None-the-less, your battery is fine. When your charger is displaying green it will continue to trickle (slow) charge the battery to keep it topped off, so to speak. The first 3 charge cycles you should leave the battery on the charger the full recommended time. On most Motorola radios it is 10-12 hours. This will assure your battery is charged to full capacity and initiated properly. In most cases, your traditional charging of the radio should be overnight. When you go to bed, put the radio to bed on the charger.

FYI: All batteries come from the factory with some charge in them. It is a small test charge to assure the battery's funcationality.

If for some reason after the first week or so, you think your battery or charger is not functioning properly, contact the dealer where you purchased the unit. They can replace it under warranty.

Best regards.

Dec 29, 2010 | Motorola Mag One BPR40 Two Way Radio

1 Answer

Looking for battery charger


Hi Vic,

When looking to replace a battery charger for a device there are four things that need to be satisfied.

  1. Minimum voltage (usually 10-15% higher than the battery)
  2. Minimum Amps (usually marked on the device in milliamps (mA)
  3. The plug has to fit
  4. The plug needs the correct polarity (is the center positive or negative)
Of all of these, the most difficult can be finding a plug that fits. There are 'universal transformers' out there with interchangeable plugs, variable power settings and reversible polarity.

A Radio Shack type electronics store is a sure thing. Priced at $10-15.00.

But on your way, if you pass a GoodWill type second hand store, they usually have plenty of transformers2_bing.gif of this type priced at about $2.00.

Best regards
Mike

Jun 10, 2010 | National Little Tikes Hummer Yellow

1 Answer

How do you recharge a Motorola sp10 I need to know how to recharge it. I lost the manual.


There are three methods of charging the HNN9044 battery used in an SP10 radio:
1) Use the HTN8232 10-hour wall charger. It plugs into a jack under the flap on the side of the radio (opposite side from the PTT button).
2) Use the drop-in style charger by setting the radio in the charger (this works if your radio has silver battery contact showing on the bottom.)
3) Use the drop-in charger to charge the battery alone. (The battery will set in the charge crossways to the way a radio would set.)

Lastly, if your battery will not charge by one of the above methods it might need replaced.

Best regards.

Nov 14, 2009 | Radio Communications

1 Answer

When radio is plugged in only the gfi outlets work not the radio.


Mines similar, outlets work but radio will only work on battery. Radio will not work on mains only. Charger works at same time so ok. SORTED IT TONIGHT. Inside the charger inside the box there is a fuse (240v 2A) I think, tiny radio fuse. Changed that tonight and radio now works on mains only or battery. Very awkwark job but better than watching a load of cr** on tv. Hope this helps someone.

Aug 12, 2009 | Bosch PB10-CD Radio/CD Boombox

3 Answers

Motorola talkabout t5700


No, the charger is only usable to charge the rechargeable NiMH or Li-Ion battery which comes with the radio. Attempting to charge Alkaline rechargeable batteries with this charger could cause the to expode. If your charger is not charging the batteries which came with the units, it could be you do not have the charger cord end plugged in all the way, or the batteries dropped below the initial charge level by setting on a store shelf too long. Most TalkAbouts come with a cradle style charger to hold the radio, and a possible plug to plug into the charge hole. Check all connections, and clean any battery/charger contacts with a pencil eraser. To re-initialize the batteries you would need to attempt 3-5 charge cycles by charging for 8-10 hours, then letting the battery rest for 8-10 hours, repeating 3-5 times as needed. If this does not bring the battery back to life, you need to replace the batteries.

Jun 07, 2009 | Motorola Talkabout T5700 AA (22 Channels)...

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