I have a samsung hlp5085w with a light bulb symbol, my question is what else i have to change, i already replace the light bulb which was blown, i replace a color wheel too and still got the light bul

SOURCE: Samsung HLP 4663W DLP TV 3 lights blinking

Color wheel is the biggest failure part in Samsung DLP...
A little technical to replace...............T.

SOURCE: Samsung HLP 4663W DLP TV

If you have already replaced the lamp and ballast, to no avail, then it is time to take it in to a certified repair center.  Most will charge a nominal diagnostic fee.  My 61" did the same thing and it turned out to be the Light Engine (of which the DMD Board is a part).
If the problem were the color wheel, the lamp would come on for a bit until the color wheel sync couldn't be achieved and then it would turn off.  The all-3-flashing-lights problem is the lamp.  Here is a page from the service manual on the 3 blinking lights problem.  
The Light Engine controls the ballast via a separate signal than the 320 Volts.  The voltage reading means that the Power Board is working properly.

SOURCE: hlp5063w 50'' projected samsung lamp won't come back on ?

It could be the lamp but don't overlook the lamp door interlock switch. If the lamp door is not aligned properly, you may have intermittent shutdown or no start conditions. You can temporarily cross the interlock switch to confirm that this is the cause.

michtech

SOURCE: Samsung HLP4663w. After replacing the Ballast,

if the picture is blue green there is a jumper to be removed on the dmd board on connector cn810--the index delay should be between 40 and 50 for optimum color --or adjusted for best flesh tone also in the options the cw setting should be set for cw2

Testimonial: "So far I am satisfied with the quickness of the response! Its great to have prompt a reply"

SOURCE: Check Fan No. 2 Error Message

The DMD board you installed is bad. It senses the detection line from the fan and generates the error code. Try installing the old DMD board.