Polaroid TDX-02610B, Tv was working fine, turned it off, now when I turn it on it flashes polaroid then goes black.

You'll need to replace the main board. That is the one with the tuner and all the input connections on it. You can do this yourself . Get the part from:
TV Parts Universal TV Stands DLP Chips ShopJimmy

how do I get my dvd to work it says loading and the after 30 second it reads no disc?

Hi,

Problem is in either power supply or the Y-Sustain board.

The Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.

Take care in handling the set.....

that could be that the back light is on it's way out but if you turn it on from cold and the screen takes a bit to come on then don't worry as it could take a while longer before needs replacing

Take out the piggy back signal should solved this problems,not than ur Tuner Signal board have some kind of intermitten short in the board.Must replaced the bard.

Change or move yellow one, of the cables, or component. if not then something you need from expert..

There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc.
http://en.wikipedia.org/wiki/Capacitor_plague
Please post back what you find.

Ur LCD inverter board is dying.Must change to have stable video.

Try, ShopJimmy.com