Question about Portable Televisions

1 Answer

Digital recieving recently plugged into a 24v power supply by mistake using 12v cigarette lighter connection . tv still switches on ok but will not store digital tv programmes when auto tuning .( you can see it picking up the channels) but i keep on getting no signal \ no service on menu

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 7 Answers
Re: digital recieving

I suspect thr system may have parcially damage please try manual tunning or fine tuning

Posted on Jan 25, 2008

Add Your Answer

0 characters

Uploading: 0%


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


3 Points

Related Questions:

1 Answer

I need a car cigarette outlet adapter for my philips portable dvd player it is two say cord

these adapter pin is available in all electonic shops and you can get them to suit your TV .
If you want the DVD to work in the cigarette lighter socket then attach the make adaper to the set with the correct polarity.
If you want to use it at home then you need the dc adapter with the current factor of about ( 12 V/5Amps) to suit your set.
I hope that is what you meant.

Sep 02, 2010 | Philips Portable Televisions

1 Answer

Delayed Power Up

Probable regulated 12v power supply.....To help further....need
info....Model # and service # and mo /yr built off back of set..T.

Dec 21, 2007 | Portable Televisions

1 Answer

How long will the battery last? Can it be recharged in my car? How long does it take to recharge?

Haier HLT71 portable TV battery is good for about 2 hours.
You can recharge it from your car cigarette lighter jack.
Or from your household 120 VAC wall plug.
It comes with both adaptors you need.
It takes about 8 hours for a full charge.
You can charge the TV while watching it, or you can power it off.
Not sure if it charges faster or the same if you are watching.
If the battery does not give you 2 hours after the first charge, try charging and using it a few more times to bring the battery up to full capacity.
Replacement batteries are available on eBay. Good to have for backup in case of a storm.

Jun 21, 2010 | Haier HLT71 7 in. Portable TV

1 Answer

For use during an extended power outage, where of course you wouldn't be able to recharge the battery after it drained initially, I'm wondering if anyone has tried using a 12 volt lead acid rechargeable...

You simply need a DC - AC Inverter, these can be obtained from somewhere like Radio Shack, or the like, pretty cheaply. These convert 12V DC into 115/120V AC (Some are 24V - 115/120 V) for use with your household appliances. You can get them from 100 Watts to over 1 kilowatt (!000 Watts) They can be used on almost anything at all, except things with big motors in them. Then you can simply plug the AC adapter into the inverter and you are good to go. not having to worry if your laptop is getting correct power.
Often the DC input into a laptop is between 14 Volts DC to 22 Volts DC and a high current too, up to 5 Amps. So the inverter is your best option.
Anyway you would need to use at least TWO 12 Volt batteries and then you would have to make it the exact voltage the laptop needed.. if it was say 19V then you are still going to have to find a way to drop the 24 V to 19 V, anyway so.....

Feb 03, 2010 | Haier HLT71 7 in. Portable TV

1 Answer

Watch dvd on home television

you need to buy a chep universal 12 volt adapter

Dec 07, 2008 | Portable Televisions

1 Answer

Tv runs on 110 but not 12volt

There is a fuse on the DC power line for AC/DC sets and you can start by making sure it isn't blown. The fuse may be in the cigarette lighter plug itself, or inside the TV. If you find the fuse blown, replace it with one of the same value and try it again. The fuses sometimes do go for no good reason. If there is some internal trouble with the TV, the fuse will go again and you'll know for sure.

Nov 30, 2008 | Supersonic FC2245 13 Color TV/DVD Combo...

1 Answer

High school musical tv

Resetting the TV
If the buttons on the remote AND the buttons on the TV case do not work (channels do not change and you cannot open or navigate the menu), the TV has stopped responding. Reset the TV as follows:
Some TVs have a reset button. If available and accessible, try using the reset buttons before using the steps below. Using the reset buttons can save time.

1. Unplug the TV power cord from the power outlet for 4 hours.
2. Unplug any connected devices (DVD, Set-top boxes, etc...)
3. Press and hold the TV power button for five seconds.
4. Plug the TV power cord back into the power outlet and turn on the TV.
5. Open the on-screen menu to confirm that the TV is responding again.
6. Turn off the TV and reconnect the devices.
7. Turn on the TV.

hope this may help;


Sep 07, 2008 | Disney Portable Televisions

1 Answer

Digital signal

Most of the small (5") TV's do not receive digital, especially if they are more that a few years old.

Jul 15, 2008 | Spectra Logic 5-CTV 5 in. Television

1 Answer

It has not the C405 capacitor

if your are a technician , you will be able to do that.
remove the back, carefully remove the main board, plug the tv. with the multimeter on DC voltage, check the voltage at that point . If you find a 10V , the capacitor will be 16V, if 12V the capacitor will be 25V. in general the capacitor have to be electrolytic and have more than 470microfard.

Oct 19, 2007 | Jwin JV-TV2042 5.5 in. Portable Television

2 Answers

Snoy model KV-21GMR1

check secondary voltage first and look for short.if you replace the regulator strs6707 you replace also c623 220uf/16volts

Sep 24, 2007 | Emerson TC0918 Television

Not finding what you are looking for?
Portable Televisions Logo

Related Topics:

128 people viewed this question

Ask a Question

Usually answered in minutes!

Top Portable Televisions Experts


Level 2 Expert

136 Answers

The Knight
The Knight

Level 3 Expert

66330 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17129 Answers

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

Answer questions

Manuals & User Guides