Showing posts with label Lens Cleaning. Show all posts
Showing posts with label Lens Cleaning. Show all posts

Thursday, October 22, 2009

Digital Camera Repair Problem #2 - Broken Lens

Digital camera lens repair is as common as LCD repair, but it's #2 on my list because it's harder to repair and there are so many different types of lens problems whereas a broken LCD is a broken LCD no matter how you look at it.

Here are some basic tips to avoid breaking your lens:

- Do not leave the batteries in your camera in the camera bag. The power button can be pressed accidentally causing the lens to extend and get jammed because it cannot open properly inside the bag.
- Try not to drop the camera with the lens extended.
- Don't ever pull or twist on a lens that is not working 100% properly, you will just break it.

I would have to write a book to fully explain lens problems fully (hmm.. maybe a good idea!) so I will try and keep it simple and informative.

The lens is made up of many different parts... Let's start with the several pieces of glass referred to as the lens elements.

The outer lens element is prone to being scratched and scuffed, and usually has a special coating on it that you DO NOT want to clean off with isopropyl alcohol (rubbing alcohol), or Windex or something similar. It's not the end of the world, and don't worry about it if it's missing. Just keep the lens clean (why are there fingerprints on your lens anyway??) and scratch free.

The inner-most lens element is responsible for the fine focus and resides directly in front of the CCD. When you press the shutter button half way down to focus, this part moves forwards and backwards till it's in the correct position and your image is in focus. You won't be messing with this part of the lens... unless you feel like removing the lens from the camera and then tearing down the lens to get at it's 'guts'. It's kinda fun the first time, but uh... I wish you luck getting it back together properly. The tearing apart stuff is fun, the putting it back together is a drag!

The lens has two small motors with their own gears that connect to the two main parts of the lens. The larger motor drives the lens barrel in and out when zooming. The smaller motor drives the fine focus element mentioned above and controls the focus. If you get ONE GRAIN of sand in these gears, they will jam and the lens will "error out" as we like to say. Open it up and clean it out if you like, but it's not easy. Typically the main motor of the lens has 5-6 different gears that must be set and aligned properly to function. But hey, your lens is already jammed, why not see how it works, right?

Then there is the CCD, "charge-coupled device" which translates the light that enters the lens into a digital signal that the camera can record.

There was a very large CCD recall by Sony over the past few years that covers many manufacturers and not just Sony, as Sony provided the CCDs to many others for their cameras. The defective CCD's cause the camera to take solid black photos, or purple/pink "dripping paint" photos, or they have repeating white horizontal or verticle lines on the images. If your camera does this, call the manufacturer and tell them you want a repair under the CCD recall no matter how old your camera is! IF it's on the list, you might get your camera repaired for free.

Got spots on your images that get bigger and smaller as you zoom in and out? Most likely there is a spec of dust on your CCD. You will need to remove the lens and then remove the CCD from the back of the lens and clean it off. Don't lose the gasket that goes around the CCD, don't get any other dirt inside the lens and don't leave any fingerprints! Tall order I know, sorry, I'm demanding. =)

Let's see... what else? Your lens is part way out, stuck at an angle becuase the camera was dropped while turned on. Now please read that carefully; the lens must be stuck part way out or all the way out, and one section of the lens MUST be stuck at an angle. The lens must not move freely at all for this section to apply, and you may follow this advice AT YOUR OWN RISK. The following repair trick works, but I am not repsonsible for your actions or anything you do to your camera.

Ok, it's stuck at an angle. Hold the camera with the angled part of the lens resting against the edge of a table, and the rest of the camera hanging over the side. Do not place the camera facing down with the "Canon Zoom Lens..." chrome ring section flat on the table. The rounded edge of the lens must be what makes contact here. Now... here is the tricky part... press the angled part of the lens back into alignment by pushing down on the lens on the edge of the table. Put your fingers on the LENS below the angled part to support it and press firmly but still gently (how do I do that? I don't know.. you just do it) and the lens will either POP!! back into place and work perfectly or it won't budge and no harm will be done, -OR- one of the "guide pins" that run inside a small track in the lens barrel will break off and you have just destroyed the lens.

I told you it was at your own risk!! Camera repair is fun... right?

Ok, how are we feeling about lenses? I think we have covered most of the basic problems, and I hope this helps you to get your camera repaired more quickly and cheaply!



October 23, 2009
By Thomas Drayton
I own a digital camera repair and parts business in the St. Paul MN area: http://www.darntoothysam.com

Lens Cleaning

Sunday, September 13, 2009

The Must-Know Basics Of Digital Camera Repairing

Possessing a high-end and sophisticated gadget like digital camera can be a pride in itself, but repairing it can be daunting. A digital camera is a 100% electronic device with many delicate circuits inside it. Adequate knowledge about the delicate device is essential for the technician for repairing who must handle the device with extra care. It needs specialized testing equipments to diagnosis the very problem. That is, perhaps, the reason why digital camera repair is expensive.

There are some minor defects in your digital camera that you can fix yourself. Of course, that depends on the type or the model of camera that you are using. Here, another noteworthy thing is you should have precise idea about what exactly is wrong with it.

Things You Can Fix Yourself:

The common problem that can be detected and fixed without much hassle is the digital camera lens. Most of the time it is due to careless handling or improper setting that the lens ceases to function leaving you baffled over the matter. Most of the time, it is due to the improper alignment of the lens. You will encounter system error messages on the LCD. In such circumstances the camera is not able to focus and the result is worse pictures. You can simply realign the lens or reset the zoom barrel guide pins and you will find your digital camera working as usual.

There are some other minor and common problems such as broken battery cover, broken hinges on memory card doors, cracked LCDs, etc. But if you are not sure about the problem, it is wise not to handle it. Rather you can take your digital camera to an authorized repairing center.

However, before visiting any repairing center or technician you must take check certain common things. There may be some minor problems that you can identify yourself such as:

1 - Sometimes, it is very likely that you might have hit the wrong button or have changed the menu for which the device does not work properly.

2 - If the battery of your digital camera is running out of power, it is most likely that the digital cameras will not work. Ensure if thing improves when a fully charged cell is inserted into the digital camera.

3 - Sometimes, it is necessary to reset the camera through the menu or by removing the battery for 24 hours.

4 - The camera may not turn on if the memory card is full.

These common problems can not be really considered as a serious problem for the digital camera. But a novice user of the gadget may find it difficult them troubleshoot.

Selecting Repairing Service Station:

If the small efforts are not enough to fix your camera, visit an authorized service station in stead of asking any ordinary technician. The technician in the service station should have experience of fixing several brands and models of digital camera.

Moreover, both the user and the technician should have the ability to distinguish between marginal repair and quality repair. A little bit of confusion in this regard may cause damage to your precious digital camera.

Each model of digital cameras requires special tools to fix the errors and reliable service centers have these specialized tools and skilled technicians to properly service and safeguard the digital camera. Efficient diagnosis and repairing of digital camera depends largely upon specialized tests, appropriate equipments and expert technician.

The high-end and sophisticated device like digital camera requires a lot of concern and careful handling which is of paramount importance for longevity of the digital camera. However, the repair process of digital camera also needs the same amount of care and attention. You need to have adequate knowledge of handling digital camera to avoid any kind of trouble.

If possible gather information from the Internet about handling and repairing. A digital camera is a valuable possession and worth caring.

(ArticlesBase ID #52347)



September 14, 2009
By
Robert Sedycias
Roberto Sedycias works as IT consultant for www.polomercantil.com.br
Source: http://www.articlesbase.com/electronics-articles/the-mustknow-basics-of-digital-camera-repairing-523473.html