Iam a technician i have this plasma there are random colors some place on the screen some lights and fuzzy colors do u know wich board is bad?

T-Con Board probably

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. Surf the site with patience. 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.

Sounds like COF [Chip On Film] fault. Contact any service technician. To get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD & Plasma screens are given with illustrations. You can get an idea about the fault to an extent.

No, if ANY of the fuses were bad, the television wouldn't operate at all. I suspect that a technician will have to possibly make adjustments to the Y-sus and Z-sus panels to see if that helps. Possibly the y-sus panel is going bad or the plasma panel is going bad itself. Either way you need to have a technician look at the TV for you. Please take a few moments to rate my answer. Thank you.

The PDP ( plasma display panel) is defect.You can look for badly soldered SMD resistors on the COF panels wich are located at the bottom of the screen.
Beware,the flatcables wich the resistors are located on are verry fragile!

Sounds like noise is causing the issue. Could you provide brand and model number?

How long is a piece of string?

There are 2 boards called sustain boards inside the set. Either one of them or both could be the culprit. Unless you have electronic skill, the right tools and know how to retune the set, I would siuggest this is not a DIY job. Some willsay it is just a matter of unplugging the boards and replacing them, howver that is a short lived fix in a majority of the cases i read on here.

Yes it does work for a while, then other problems arise.. conergence drops out, power fails and a myriad of other things happen that would normally be measured and checked by a good repair technician. It ends up costing 2-3 times more than if it was done professionally. The decision is yours, but i can only advise you NOT to.

Thanks for using FIXYA

coloue spots on screen. how do you fix with screwdriver?

SOUNDS LIKE YOU HAVE A BAD Z-SUS BOARD...LOOKING FROM REAR OF SET WITH BACK COVER OFF..ITS ON RIGHT SIDE..CALL ANDREWS ELECTRONICS IN CALIFORNIA WITH MODEL #..THEY WILL GIVE YOU A PRICE AND PART #...JOE ACE

You don't have any magnet anywhere near the TV do you ?
If not it sounds like something magnetic is interferring with the picture.

If not get the warranty out :D