Forum Discussion

rmasonschneider's avatar
rmasonschneider
Explorer
Dec 30, 2014

out went 12" CRT TV and in came 24" LED but help.

I just purchased a 24” LED tv to replace the old 12 inch CRT which came with the unit from the factory. It was my understanding that the original CRT drew about 30w which is pretty close to the 33w draw on the new LED so I just picked one up for an overdue upgrade. When I removed the old tv, I discovered that the power cord (part that plugs into the tv) was hard wired to the rv electrical system and not a standard AC plug in. I now have a male plug that used to plug into the back section of the old CRT which was able to run off the batteries.

The new LED 24” tv came with also came with its own AC power cord/supply the small “brick” that looks similar to that of a laptop which has it’s own male plug that looks similar to what used to power the old CRT. Not knowing the compatibility of the old plug with the new LED tv, I have not attempted to plug the original power plug into the new LED TV and just plugged the new tv into the AC receptacle to be safe. So now I can’t watch tv when unless i’m either hooked up or running the generator. I need your advice in changing that.

The original 12” CRT is undoubtedly 12V and likely drew about 30w, can’t find the amp draw.
The new 24” LED shows: 19V 2.0A and 33W on the spec sheet.

Will the original power cord power the new tv without damage?

Thanks in advance,
  • 2oldman's avatar
    2oldman
    Explorer II
    Dec 30, 2014
    magicbus wrote:
    I would throw a meter on the wires and confirm it really is 12 volts before plugging anything anywhere.
    ^^ Do this, then...

    If it measures 12v, (likely) then put a small psw inverter on there and plug the TV brick into the inverter.

    12v into a set requiring 19v is not a good idea.
  • magicbus's avatar
    magicbus
    Explorer II
    Dec 30, 2014
    ... the old CRT which was able to run off the batteries... The original 12” CRT is undoubtedly 12V


    You do know for a fact that the old tv is 12 volts right? That the old TV power is not on an inverter-driven circuit? I would throw a meter on the wires and confirm it really is 12 volts before plugging anything anywhere.

    Dave
  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    Dec 30, 2014
    rmasonschneider wrote:

    The new 24” LED shows: 19V 2.0A and 33W on the spec sheet.


    There is your answer- unless your rig is wired for 19 volts (a typical laptop voltage), the answer is no.
  • tenbear's avatar
    tenbear
    Explorer
    Dec 30, 2014
    sch911 wrote:
    Look at the specs printed on the power brick for the new LCD and see what it's output is. This should answer your question.


    X2. If the brick shows the output voltage is 12 - 14v, connect the TV, without the brick, directly to the 12v power in the RV.
  • Dakota98's avatar
    Dakota98
    Explorer
    Dec 30, 2014
    You can always cut the old incoming cord connector off & connect a new 12 volt female receptacle to that end & use a small wattage AC/DC inverter like this one. That will accomplish what you want to do & not have to run the generator or be connected to shore power.


  • ScottG's avatar
    ScottG
    Nomad
    Dec 30, 2014
    No!
    By limiting the voltage to the new TV you will fry it's power supply.
    Why don't you just use the cord that came with the TV? Just install an outlet.
  • sch911's avatar
    sch911
    Explorer
    Dec 30, 2014
    Look at the specs printed on the power brick for the new LCD and see what it's output is. This should answer your question.

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