Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: HELP PLEASE - Lightforce lamp electrics

  1. #1

    HELP PLEASE - Lightforce lamp electrics

    Any electricians on here please?

    My lightforce bulb died so I replaced it with a new one - but now the lamp will not work on the suction arm.

    If I put the two wires across a 12v battery the lamp comes on. I have also put a voltmeter at the business end of the handle and I have 12.96v - but the light will not come on when connected to the same wires??

    I have tried various combinations and different connectors - all to no avail.

    Any ideas please as to what I am doing wrong?

    Thanks in advance.

    Iain
    Handle every stressful situation like a dog. If you can't eat it, hump it or learn from it then piss on it and walk away.

    "HOSPITALITY" - the art of making guests feel at home (when you wish they were).



  2. #2
    Try changing the seating of the bulb, if i remember right some need to be seated right down while others need to be lifted slightly off the seating so there is a gap between the bottom of the bulb and the housing.

  3. #3
    If you have used crimps that you have crimped the copper cores and not the rubber sheath. You could also check the continuity of both wires to make sure the cores are not broken .

    Provider

  4. #4
    Quote Originally Posted by wirehair View Post
    Try changing the seating of the bulb, if i remember right some need to be seated right down while others need to be lifted slightly off the seating so there is a gap between the bottom of the bulb and the housing.
    Quote Originally Posted by provider View Post
    If you have used crimps that you have crimped the copper cores and not the rubber sheath. You could also check the continuity of both wires to make sure the cores are not broken .

    Provider
    Many thanks for the replies and I will check out both of these tomorrow (& report back) - but why would I get a lamp that works connected straight to the battery and doesn't work when connected to wires showing 12v+ on the meter.

    Slowly going mad........
    Handle every stressful situation like a dog. If you can't eat it, hump it or learn from it then piss on it and walk away.

    "HOSPITALITY" - the art of making guests feel at home (when you wish they were).



  5. #5
    Ive had to re-wire them once or twice when used with roof mount

  6. #6
    Test the NEW bulb, just because its new doesn't always mean its a good one. You could also try bypassing the switch as these sometimes fail.
    ATB Gaz

  7. #7
    Quote Originally Posted by Eyefor View Post
    If I put the two wires across a 12v battery the lamp comes on. I have also put a voltmeter at the business end of the handle and I have 12.96v - but the light will not come on when connected to the same wires??
    This isn't clear to me, but I've never seen a lightforce lamp before so...

    Which two wires do you put across the battery? Are these two bare copper wires that connect directly to the lamp and you are just holding them across the battery?

    "The busness end" where is this and how is it related to the two wires mentioned above? For example do they plug into it?

  8. #8
    Quote Originally Posted by caorach View Post
    This isn't clear to me, but I've never seen a lightforce lamp before so...

    Which two wires do you put across the battery? Are these two bare copper wires that connect directly to the lamp and you are just holding them across the battery?

    "The busness end" where is this and how is it related to the two wires mentioned above? For example do they plug into it?
    The two wires I put across the battery are connected direct to the lamp and are (something like) 2 core x 1mm plastic coated. Doesn't matter which way round I touch the wires to the battery - the lamp comes on.

    The "business end" is the top end of the suction arm where the lamp sits and the driver can use the swivel mount to direct / rotate the lamp as required when lamping. The sequence of the wiring is (for various reasons) crocodile clips to battery / bottom multiblock / switch (in base of handle) / top multiblock / lamp. At the top multiblock with switch on I have 12v+ on a meter but the lamp (when connected) will not illuminate.

    Aaaaaargh.

    Daytime shooting is so much easier!
    Handle every stressful situation like a dog. If you can't eat it, hump it or learn from it then piss on it and walk away.

    "HOSPITALITY" - the art of making guests feel at home (when you wish they were).



  9. #9
    Welcome to the world of Lightforce wiring and switches.

    Sounds to me like there is possibly a breakin one of the wires which is causing the continuity issue.

    Also did you check the old bulb is actually blown?

    Is the new bulb OK, flick it with your finger nail just to see if the filament is Ok.

    Is it a vertical or horizontal filament bulb?

    Had numerous issues with this problem, you may need to resort to testing every section of the wiring, and wiggling it you may then pick up the wire which is broken. Helps to have crodile clips to attach to ends of wires.

    Also look very closely at the switch, classic place for fracture/soldering to go.

    I susupect like most lightforce users you will end up rewiring the whole lot.

    Light bulbs direct is good source for bulbs.

    D

  10. #10
    Quote Originally Posted by Cyres View Post
    Welcome to the world of Lightforce wiring and switches.

    Sounds to me like there is possibly a breakin one of the wires which is causing the continuity issue.

    Also did you check the old bulb is actually blown?

    Is the new bulb OK, flick it with your finger nail just to see if the filament is Ok.

    Is it a vertical or horizontal filament bulb?

    Had numerous issues with this problem, you may need to resort to testing every section of the wiring, and wiggling it you may then pick up the wire which is broken. Helps to have crodile clips to attach to ends of wires.

    Also look very closely at the switch, classic place for fracture/soldering to go.

    I susupect like most lightforce users you will end up rewiring the whole lot.

    Light bulbs direct is good source for bulbs.

    D
    Hi.

    Many thanks for the input.

    I have switched bulbs (horizontal filament Osrams from t'interweb at 2 each) between working ones and still the same result. Daft thing is if I wire direct to a battery it works but via the handle it doesn't - although I have 12v+ at the wire ends?

    If I put the meter in to the lamp holder I still get 12v but when I insert the bulb - nothing.

    I also suspect I will end up rewiring the whole lot - but how to get the lampholder out of the handle? It is pop rivetted in?

    UPDATE

    The problem is definitely in the T handle 'cos I have now wired the lamp to a battery using the old Lightforce flexi cable (& not the 2 core household style cable that came with the - secondhand - T bar) and the lamp works.

    Rewire of T Handle I think!

    Thanks for all input.
    Last edited by Eyefor; 06-12-2011 at 17:13.
    Handle every stressful situation like a dog. If you can't eat it, hump it or learn from it then piss on it and walk away.

    "HOSPITALITY" - the art of making guests feel at home (when you wish they were).



Similar Threads

  1. Wanted Lightforce Roof Mounted Lamp
    By TotalNovice in forum Deer Stalking Equipment
    Replies: 0
    Last Post: 12-11-2011, 19:12
  2. For Sale Lightforce Rifle Scope Mounted RMSM140 Lance Lamp
    By borden in forum Deer Stalking Equipment
    Replies: 0
    Last Post: 25-09-2011, 13:50
  3. Wanted Wanted: Lightforce Blitz 240 Lamp Housing
    By Mutley in forum Deer Stalking Equipment
    Replies: 6
    Last Post: 04-05-2011, 18:35
  4. Lightforce lamp
    By finnbear270 in forum Equipment & Accessories
    Replies: 2
    Last Post: 22-09-2009, 15:29
  5. Dodgy wire in Lightforce lamp
    By Remington 700 in forum Deer Stalking General
    Replies: 4
    Last Post: 31-08-2009, 21:35

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •