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Author Topic: How do I remove the Varapower control knob?  (Read 2002 times)
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Posts: 122

« on: October 16, 2014, 04:06:31 PM »

Hi Kevin,
I have beat the crap out of my 3D Lambdalights.  Incredible it has been dropped at least 100 times and been in wet and sand conditions yet it still functions like new. grin grin grin

Downside is the 3D Mag case is beat to crap.  Looks aged.  I want to switch the electronics to another case.

I see a set screw on the side of the Mag for the heatsink removal and ground, but cant decipher how to remove the knob.

Thank you,

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Posts: 6

« Reply #1 on: November 02, 2016, 01:29:15 PM »

Yeah, i also have the same question:) I want to replace the LED wires.
Sr. Flashaholic
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Posts: 652

« Reply #2 on: November 02, 2016, 02:21:17 PM »

Hi Pulstar,

The knob is attached to the brass shaft with epoxy.

To remove it, you will need to heat it to around 240F to soften the epoxy.

Use a Bic lighter and heat for about 6 - 10 seconds. Not too hot, just enough to get the epoxy to loosen up, or the control may be damaged.

Best to heat the knob and try to turn it (with gloves or a rag when hot) than to pull on it. Pulling hard on the shaft can cause problems, so try and get it to spin free first.

Once you get the knob off, and remove the heatsink, you will also need to remove the two screws inside the battery tube holding the switch assembly in place. Then push the switch assy out the rear of the battery tube.

The setscrew for the heat sink is 6-32 thread, so you'll need to drill/tap a hole in the new battery tube before assembly.

If you have any more questions, let me know. - I'm kind of slow checking email and this site nowadays. but do check back at least every couple of weeks, so if I don't answer for a while, I'm off visiting friends and family somewhere, but will answer eventually.

Good luck!
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