Question about InFocus LP70+ Multimedia Projector

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Lens adjust is sticking. With the lense out you

Lens adjust is sticking. With the lense out you can adjust it but it takes a bit of force to do. with the lens in it will not adjust, it just unthreads from the projector. I did lubricate the lens with some light oil on a q-tip and exercise it, this didn't help. any suggestions?

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Since you have then lens out, get a wide blade flathead and insert it in the smallest part if **** that it will fit into behind the focus ring and turn the blade like you are trying to widen the **** all the way around until it pops out into it's normal position. Getting the entire lens back in properly is a bit tricky since the threads are easily stripped. First screw it all the way back on and then check the focus on the screen. You want to see a crisp image in 3 if not 4 of the outer corners of the screen. It is best to use something with text that fills the whole screen so you can see the 4 corners as you adjust the focus. If the focus is good in the corners, leave it alone. If not,hold the back of the projector in one hand and forcefully push the lens into where you screwed it on and see if it pops into place. It really is trial and error. Once you have a clear picture it is a good idea to remove the top cover and glue all around the base of the tube where it screws on so it doesn't come loose again.

Posted on Jul 30, 2010

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Hi have a panasonic gx7been given 2 sigma lenses can i fit to my camera 1 x sigma 1:4.5 F=100 - 200mlti coated zoom lens 1 x sigma mini wide 1:2.8 f=28mm multi coated lens thank you


It depends totally on whether your camera takes interchangeable lenses, and if so, do these lenses have the same fitting ? Your camera manual should tell you if you can fit other lenses to the body - if so, follow the steps to remove the lens which is currently attached, and compare the fitments with this lens and the two others you have been given. If you are still not sure, then take it all to your local friendly camera dealer, who will be able to advise you. Do NOT try to force the new lenses onto the body - this is a sure way to render them inoperable.

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Welcome to the club of lens droppers entry only requires that you drop and break lenses its an expensive club to join
I found my entry fee to be to high for continued membership once was enough
cheaper to buy another lens due to internal damage repair costs
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Now send me a diagram on what lens you have and I will see if I can reassembly in the correct manner. stewbison

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I have a new garage door opener that has the black and purple buttons to adjust the force and travel of the door ...... eveything is working well except when the door closes it goes a little to far, the...


I have a feeling the down force adjustment is set much to high. If the door is hitting the floor hard enough to bend the rail the safety should be reversing the door to the open position. Maybe this will help.

The force adjustments control the pressure used to open and close the door. A new garage door opener from the factory is set to the lowest possible force adjustment. If you have a properly balanced door, the forces required to open and close the door should be minimal.



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I have a new Sears 315mhz garage door opener and the door fails to reverse when an object is placed under the door


It sounds like the force adjustment may be set too high. Check this:

The force adjustments control the pressure used to open and close the door. A new garage door opener from the factory is set to the lowest possible force adjustment. If you have a properly balanced door, the forces required to open and close the door should be minimal.


The force adjustments are usually located on the rear of the garage door opener and/or under one of the light lenses, If your opener has two lights. If you have lights on the side of your opener, the force adjustment will be located under the right light lens. The force adjustments are labeled with an arrow indicating open or close and numbered 1 to 9, with one being the lowest force and nine the highest. The force adjustments can only turn 260 degrees, or ¾ of a complete turn. Changes to the forces should be done in 10-degree increments. Please remember that too much force will interfere with the proper operation of the safety reversal system. Do not increase the force beyond the minimum required to close the door. Do not use the force adjustments to compensate for a sticking, binding, or unbalanced door.



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1 Answer

Hi my sigma 18 200 has stuck at full zoom how difficult is this to repair ?any advice would be welcome.


Some Sigma lenses feature a "zoom lock" to protect the lens when not in use, so just make absolutely sure that this hasn't accidentally been left engaged nor that the switch is being obstructed from unlocking somehow, such as by dirt/debris. It's also worth giving the lens a few sharp taps down onto a table in case it's just a bit of sand or other debris.

Otherwise, it's not a DIY fix due to the complexity of modern autofocus zoom lenses. If you try to force the lens or attempt an incompetent repair you'll ruin a £300 lens.

The best option is to send it to Sigma for a repair estimate, if you're in the UK then there's a fixed fee of £93.99 (tariff no.6). The link I've provided is for the UK but if you're elsewhere different fees and procedures probably apply. If it helps, my experiences of getting similar repairs done in the north America is that they're usually a bit cheaper and in Aus/NZ they're a bit more expensive.

If your lens has failed under warranty then the repair is free if the lens has not been misused, there is no evidence of any unauthorised repair attempt, and you have proof of purchase.

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1 Answer

Side out of image


I'm assuming in what follows that you've tried other lenses and only get the problem with this one lens. If you haven't, then it's essential to do this first unless the lens is obviously the problem. If it happens with other lenses then you have a damaged image sensor mounting within the camera body which will need professional attention.

This is a common problem on this particular lens. Normally it's due to the front element of the lens being slightly skewed on the lens barrel and most commonly occurs after the lens has been dropped.

Turn your lens to manual focus and focus to the shortest distance. Set the lens upright on a table and carefully view all around, if the problem is the front element it will lean slightly to one side like a miniature leaning tower of Pisa. If it doesn't, then check again with greater precision using a ruler to measure the distance s between the lens barrel and the focussing ring and a number of opposite points around the circumference. If they're anything but identical then the lens is skewed. If they are identical then the skewed element is buried deep inside the lens and will need professional repair as it's most likely a fault with the moving element used for image stabilisation.

If the tests confirm that the front element is skewed then if you're really careful and lucky you can often jiggle the front element using a firm twisting action back into place. It does take a bit of judiciously applied brute force and if unsuccessful you can make the problem worse, but either way if you don't try then the lens needs professional repair and new internal parts.

I've had this problem on about one of these lenses every month or so for the last year. The brute force repair works in about half the lenses I try it on and normally lasts. On the others a strip down repair usually shows the same range of broken/worn parts as I find on those lenses which clearly are too far gone to attempt the brute force method.

The difference is cost: the brute force repair costs nothing. The proper repair is often economically unviable as it often costs 50% to 70% of the cost of a brand new lens with a warranty.

Sep 05, 2009 | Canon 28-135mm f/3.5-5.6 EF IS USM AF Lens

1 Answer

System error


This eroor usually comes due to faulty sliding mechanism.Put a bit of force on the focussing lense to push it back into camera casing. That's the reason the sliding mechanism won't work. The lense is stuck and if you force it back in, the sliding mechanism will work again. Not responsible if your camera screws up, so try at your own risk.

Or else try out this method

Pull the lens fully out and then it will work.It will be bit tricky to get the lens out. Use your nail to "grab" between the outer glass and the little plastic cover.

Hope this will work for others too.

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Sony dsc-w55 fell and the lens is stuck


Use bit more force to push or pull the lens as lens has been damaged. If applying bit more force lens goes to working, u saved $$$ otherwise, new lens option is always available at Sony repair shops.

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