Recently I turned on my camera and the screen shows black background with glittery sports on the screen. What needs to be done to repair?

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

Please change the T-CON board, if it did not fix the problem, you may have a defective LCD Panel.

Repairs usually average about $200. Actually, most of the time these are not repairs but replacements with factory-refurbished cameras that gave someone else problems. There's no guarantee these problems won't crop up again. Your decision.

The Sony has had some problems with the LCD screen since models made about 2004, so if your camera was made since that time.

If the Live View shows areas of total black, the LCD is probably faulty and needs to be taken to a Canon Dealer for repair/replacement. I believe the pictures are still okay on the computer in this case?

reset system if that does not work turn in system for repair.

the iris is stuck shut. try banging with the palm of your hand a few times to jar it lose. if its making crunching noise the gears are broken on lens housing. not econimcal to repair

Hi,
Your DSC-T1 has problem with CCD Imager and Sony will repair it free of cost. Please click Sony website and confirm camera symptoms and get details to proceed further.
Regards,

You should have this checked out by a qualified repair person at a Sprint Nextel service & repair center. Many full service centers can repair the i880 on site or order an advanced exchange to replace the unit.

This sounds like it might be a defective CCD imager. If so, Canon should fix this for you for free, including free shipping both ways. This is regardless of your camera's warranty status. Please check the following two links for more info:

http://camerarepair.blogspot.com/2007/11/canon-digital-cameras-showing-black.html

http://www.usa.canon.com/consumer/controller?act=PgComSmModDisplayAct&fcategoryid=225&modelid=13390&keycode=2112&id=29819

Applicable cameras include:
A40, A60, A70, A75, A80, A85, A95, A300, A310, S1 IS, S60, S200, S230, S330, S400, S410, S500, SD100, SD110, IXUS V2/300/400/430/500, IXY Digital 200a/300a/400/450/500