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Black Plastic Led

My LED turn signals have bulbs out?

I bought some yellow LED's made to be used as turn signals and wired them to my mirrors. The LED's were wired together on a ling circuit board and enclosed in a triangular plastic tube. The tube was clear so I painted it with flexible black paint and left a narrow section for the LED's to shine through. Would you believe the painted part is still perfect, vut the UV sun rays deteriorated the clear part. Well I let it go too long and I think some moisture affected the circuit board because a few lights on each aren't working. The lights that aren't working are in the middle of the board with one's working on each side of them. Could I clean the contacts or test to see if the bulbs will work? I'm wondering if I put probes next to the one's that aren't working to see if they'll light? Would I use 12 volts since the whole string is 12 volts or use a different voltage if probing next to one? What volt for just one? Thanks for your insight!!!

An individual LED operates on 2-4V depending on the type; yellow is around 2V. LEDs do not have any significant internal resistance as an incandescent lamp does, so an external resistor is required to limit the current. The external resistor also drops the voltage. A typical circuit for 12V operation is a single resistor in series with several LEDs in parallel. Too much voltage or too much current will destroy the LED. If you tap into the power right at one of the LEDs that is working, and jumper it over to one that is not working, then you would have the right current and voltage.

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Many people are interested in knowing the recovery period for a rhinoplasty procedure. While this recovery period varies depending on the work that was accomplished as well as the type of rhinoplasty that was performed it can be generalized.

For starters after having undergone a rhinoplasty procedure you are most likely going to have to deal with a cast which will be placed over your nose as a means to protect it after the surgery. This cast will most likely stay on for a period of 7 days while at the same time you may also have to deal with bruising and swelling for up to 2 weeks after having undergone the procedure.

Different people will recover from the procedure at different rated but hen generalized the only major obstacles associated with the procedure is the cast, swelling and bruising. When it comes to the swelling and bruising though, they are not localized just to the nose but also to the entire nasal cavity. What this means is that some patients of a nose job have reported black eyes in association with the procedure. This is because the tear ducts share the nasal cavity and therefore the bruising and swelling can spread to the eye sockets as well as the entire upper lip.

Just make sure that you are adequately prepared for the recovery period of your rhinoplasty procedure. This means that unless you are comfortable going out with bruised and swollen eyes along with a cast on your nose then you will have to stay in doors for this time period. Make sure that you have everything you need to last you for 2 weeks if it is possible which also includes ice packs.

During the first couple of days it will be suggested that you use ice packs to help control the swelling associated with the surgery. From then you may also have to deal with some nasal bleeding for at least the first week if not more. This bleeding will not be profuse but is can happen and it will be similar to that of a standard nose bleed except it will usually stop on its own. After about the third day of recovery, you are most likely going to feel ready to return to your daily activities which in most cases are just fine as long as you are comfortable about leaving the house with the cast on.

The bruises around your eyes which will appear like a black eye will usually go away after the first week following the rhinoplasty procedure. You will have to still deal with congestion and swelling of the nasal cavity for up to two weeks following your surgery.

Rhinoplasty

Nose Job

Cosmetic surgery

Dr. Jim Greene would like to invite you to visit the above resources if you are interested in learning more about Rhinoplasty and other surgery procedures.

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JOHN CRISP: Brace yourself for vuvuzelas
Some of the complaints about the vuvuzela - the three-foot-long plastic horn that furnishes the relentless background noise at World Cup matches - have had racial or ethnic overtones.