LED Replacement.

Discussion in 'Tech/Mech General' started by Crwydryn, Mar 2, 2012.

  1. Crwydryn

    Crwydryn Read Only Funster

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    I'm looking to replace the fluorescent bulbs with led in the camper.
    The units i have are these.
    [​IMG]
    [​IMG]
    I managed to get hold of 2x these G23 13W 5050SMD 52LED 110V/220V


    [​IMG]

    Can someone suggest how i can get these to work?
    I've measured 240v on the input to the bulb in the camper but the LED doesn't light up.
    I connected 240v house straight on to the LED and lights up ok.
    Do i need to get a 12v inverter to get it to work?

    Many thanks.
     
  2. GJH

    GJH Funster Life Member

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    First of all are you sure that the lighting unit is a mains one? It looks suspiciously like the 12v fluorescent fittings I converted to LED in our previous van.

    I still have one of the tubes (GE brand) with reference F 9 BX/840/4P on it. If yours is the same then you need a LED which works on 12v, not 230V.

    The conversion procedure is to clip the wires to remove the ballast from the circuit (remembering to clip on the correct side of the switch) and then wire in the LED bulb.
     
  3. TheBig1

    TheBig1 Funster Life Member

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    The light your trying to convert is a 12v I believe from looking at it. The circuit board being a very low wattage inverter basically which supplies 220v to fire the tube up then a lower voltage to keep it lit. Both being at a very low current. Therefore, the circuit board is not powerful enough to power the new LED bulb.

    You either need to fit a suitable inverter board or rewire the light to take 12v LEDs, It may well be cheaper to just replace the light fitting.
     
  4. pappajohn

    pappajohn Funster Life Member

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    extremely unlikely its a 12v LED....the op has connected it directly to 230v and it lit up......if it was 12v it would have exploded.

    chances are the fluorescent inverter will have an inbuilt choke and starter isn't suitable for led lighting and will need a different inverter...for each light.
     
  5. Crwydryn

    Crwydryn Read Only Funster

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    I thought it was mains when i measured 240v at the input to the bulb but i'm confused,i thought that the small circuit board was a small inverter but it seems i'm wrong and it's only a ballast,
    The fitting is one of these.http://tinyurl.com/827mqmb
    This says it's 12v unit and i have 220 led units.

    As you say i need to get 12v Led replacement,or is it possible to put a small 50 watt inverter pc board inside?
    Something like this.
    http://tinyurl.com/7nj5cze

    Thanks
     
  6. pappajohn

    pappajohn Funster Life Member

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    • Like Like x 3
  7. Crwydryn

    Crwydryn Read Only Funster

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    :thumb: That explains why i was measuring 240v brill.
    So as you say it's best to get an extra inverter or re wire to 12v.

    I can use the 220 led in the house :BigGrin:
    Thanks for your help.:thumb:
     
  8. Crwydryn

    Crwydryn Read Only Funster

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  9. pappajohn

    pappajohn Funster Life Member

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    I removed 9 of the twin 11w fluorescent tubes, snipped the inverter 12v feed wires and connected just one strip in each light unit.
    each one gives 24w of light but I bought the cool white (too 'blue')...warm white would be better.
    eventually i will replace all the other 'missing' strips, effectively making all 9 lights 48w each.

    with all the lights (11 in total) turned on a had a 26amp battery drain......I can now run all 9 lights for less battery drain than one of the old 11w x 2 fluorescent lights
     
  10. Crwydryn

    Crwydryn Read Only Funster

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    :Eeek: My god 11 twin lights,what do you have a double decker bus.:Laughing:
    Warm white sounds good.:thumb:
     
  11. pappajohn

    pappajohn Funster Life Member

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    it doesnt end there......

    along with the roof fluorescents there are....

    2 x overhead lights,
    one above the dinette (4 x 21w indicator bulbs)
    one above the couch (2 x 21w indicator bulbs)...

    2 of twin 21w indicator bulb wall lights in the lounge area

    2 of twin 21w indicator bulb wall lights in the bedroom

    ??w over cooker strip light built into the bottom of the microwave.

    21w wardrobe light.


    i have a 440ah battery bank but it wont last long with that lot burning. :cry:

    thats one problem with american RV's....too power hungry, around 450watts in total, or 37.5amps, as they were before the LED strips :Eeek:
     
  12. Crwydryn

    Crwydryn Read Only Funster

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    That's a lot of juice :Eek!:
    This guy seems to have solved it :BigGrin:
    [​IMG]

    http://www.andybaird.com/travels/life05/catching-up.htm
     
  13. pappajohn

    pappajohn Funster Life Member

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  14. GJH

    GJH Funster Life Member

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    When I did it I bought back pin G4s plus holders from Aten Lighting. You pays your money and makes your choice. Either way cheaper than replacing the whole fitting.
     
  15. Crwydryn

    Crwydryn Read Only Funster

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    Light sorted :thumb:
    Fitted one of these-
    LM2577 DC-DC Boost Step up Adjustable Power Module


    [​IMG]
    The Led requires 30v DC to light up,connected this up from the 12v supply and light works ok.
    [​IMG]
    Also fitted this to replace the T5 Fluorescent.
    [​IMG]
     
  16. hdvrod

    hdvrod Read Only Funster

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    Can you give me a link to the bottom tube? thanks:Smile:
     
  17. Crwydryn

    Crwydryn Read Only Funster

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  18. hdvrod

    hdvrod Read Only Funster

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    Bump!
     
  19. Techno

    Techno Funster Life Member

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    Cut the innards out of mine long ago
    [​IMG]
    [​IMG]
    [​IMG]
     
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