TV won't turn on.

turn off the timer by cycling through the settings under timer

Here's is what you need to look for when describing a problem for troubleshooting purposes:

0) What model is the TV (you've covered that)

1) Does the TV respond to command to turn on?
(yes - continue; no - 70% bad power, 30% bad main board)

2) Once it responds (clicks), does a front LED or other indication show that it turns on? It's OK if there's no display.

(that can be model specific and is not certain indication for anything until known what is specific for the model)

3) If such an indication comes up does it remain on until you act or does it go off by itself?
(Stays on - power supply likely good; turns off - power supply *may* be good, but not certain)

4) If the power indication stays on by itself can you make it go off by pressing the power button or do you have to disconnect from AC power?
(responds to power off - 90% power supply likely OK and 90% OK main board; does not respond to power off - 90% bad main board)

Here is a link for test/repair of the power supply of your TV, hope it would help:

http://www.coppelltvrepair.com/p/895/samsung-pn58a550s1fxza-power-supply-repair-service-for-dead-or-clicking-on-and-off-problem

a new lamp is possible or even the ribbon cable from the wheel to the engine may be in backwards.

The lamp timer on the Hitachi projector must be reset whenever the lamp has been replaced. The "Lamp" indicator on the display will light red or the "Change the Lamp" message will display when the lamp timer needs to be reset. Hitachi recommends that the lamp timer never be reset without replacing the lamp and to always reset the timer when the lamp is replaced. The message functions of the projector will not function properly if the lamp timer is not correctly reset.

Turn the power on. Press the "Reset" button for three seconds until the "Lamp xxxx hr" message appears on the lamp timer on the bottom of the screen.

2

Press the "Menu" button on the remote control while the lamp timer is displayed.

3

Press the left arrow button. Select "0" and wait until the timer display clears.

If this was helpful a vote on the thumbs up for the free advoce would be greatly appreciated. Thanks

The tv "LAMP"LED light indication flashes or stay lit?The tv projection lamp been in this tv like 1/2 or 2 years?Tv been on and used like 4 or 5 hours a day?Yes,than the tv projection lamp life are over.Require a new tv projection lamp.

You have a power supply fault. Look for short circuit diodes.

The lamp in the tv been in use about 1 1/2 or 2 years,the tv on about 4 or 5 hours a day?The lamp life span is over.Replaced the lamp.

change lamp change fans
and replace color wheel.
make shure to remove jumper when replacing samsung color weel.
the jumper is black on the back panel of dmv modual.
jumper needs to be removed due to the new air cor motors thay are yousing, i had this same situation at one time.

Usually when there is no lamp lit, there is an indication on the front with the timer/standby lights blinking or on. Are there any indications at all?

Thanks,
Dan

I have the same problem have you figured out what the problem is