When you push the main power button on and the standby button it turns green for 2 seconds then turns right back to red what's going on???

Sounds as if the software is corrupt. Try a forced software update...

1) Switch the digibox off at the mains power, so no lights are displayed on the unit
2) Press and hold the BACK UP button on the digibox (not the remote control)
3) Whilst holding, switch the digibox back on at the mains power so the red standby light is displayed
4) Wait approximate. 10-20 seconds for the remaining 3 lights to display, at which point you can release the BACK UP button
5) Allow the digibox to download the latest software, which can take 10 minutes before returning to standby
6) Leave 60 seconds then power up as usual

A software update/refresh will leave your recordings intact. You won't lose anything.

If this doesn't solve your problem, then the next step is more drastic. It's a Full System Reset and Planner Rebuild. Be advised though: Your recordings are at risk!

1) Switch your digibox on
2) In sequence, press on your remote 'SERVICES > 4 > 0 > 1 > SELECT' (this will access the hidden menu)
3) Select the relevant option (usually the bottom two) and follow the on-screen prompts (note that it's likely your digibox will reboot between processes)
Applies to Sky+HD Digiboxes only, running latest EPG
1) Press Services on your remote control. 'Options' in the Top Menu will be highlighted in orange.
2) Press the Right arrow once to highlight 'Settings' in the Top Menu.
3) Now press the Down arrow once to highlight the 'settings' tab in the Middle Menu.
4) Press 0, 0,1, Select on your remote in quick succession. The 'Setup' tab will then be highlighted within a hidden menu.
5) Select the relevant option and follow the on-screen prompts (note that its likely your digibox will reboot between processes)
Sky Digibox Planner Rebuild / Full System Reset (if stuck in standby)
Applies to Sky+ and Sky+HD Digiboxes only

Same as above, but applies if your digibox is stuck in standby and you cannot get to the hidden menu:

1) Switch the digibox off at the mains power, so no lights are displayed on the unit
2) Press and hold the 'right and left arrow' buttons on the digibox (not the remote control)
3) Whilst holding, switch the digibox back on at the mains power so the red standby light is displayed
4) Wait approximate. 30 seconds for the blue Sky+ ring of lights to display, at which point you can release the 'right and left arrow' buttons
5) Press 'SELECT' on the digibox (not the remote control)
6) Now the system will format the hard drive, the blue Sky+ ring of lights should spin backwards
7) Allow the system to format, which can take 10 minutes before returning to standby
8) Try to power up!

The set will need to be properly diagnosed. It could be a defective main board or power supply.

the red light of death flashes red mine just goes back into standby

It could be the power or main board that is giving issues...if your able pull the back off and look for a pin on connector marked PSON or PON...that is line that tells the power board to come out of sleeping and go to work, you should see a change in the voltage when the on button is pushed, if you do then the main is doing its work and its the main if you don't see a voltage change then chances are its the power board

is you already change the power board,is possible
your y board is out...is a big board on the left side of the tv

Hey guys this one is a no brainer when you push power button AND STANDBY LIGHT COMES ON NEXT PUSH THE BUTTON ON THE LEFT NEXT TO POWER BUTTON AND WALLA IT TURNS ON

Is this for a ps2 or ps3?

Try pulling the power adaptor out of the back of the ps2 ,then make sure no dust or debree is in the part that plugs into the ps2 then plug it back in and make sure its attached firmly. The ps2 should turn on now

Check C258 video assy.