When i turn it on the power light flashes alternatly green then amber 11 times it then pauses on green for 1-2 seconds and then repeats

The defect is likely a sensitive component to over voltage (lightning) on the main power supply. But you should not exclude other boards too, since ohter board also have local power supplies and sensitive CMOS integrated circuits. Check all MOSFET transistors on the the main power supply, since they are the most sensitives. Also the regulator IC to control the PWM sent to the MOSFET is made of CMOS (sensitive). Then check all the diodes even if they are more robust to lightning. There is a MOV that absorb the lightning that could be shorted but in your case it seems to have survived.

3 flashes of the led light at the front panel is means that the unit is in booting process. The symptoms you've mentioned is caused by faulty electrolytic capacitor in the power supply section.
Look for faulty capacitor with bulged, dome at the top and then replaced it with same ratings. If you have a capacitor checker, it will make you more easy to identify the faulty capacitor without a physical indication of fault.
http://www.youtube.com/watch?v=oDGjWOabJ2E&feature=related

http://www.youtube.com/watch?v=YCSNWi3UHf4&NR=1&feature=fvwp

when i turn the printer on the light flashes amber several times, then green then repeats flashing amber, and back to green etc. turning it off and back on made no difference. last time it worked normally after being off for a couple of days, but now it is doing that again.

Amber light flashes 7 times, then green for a couple of seconds, then amber 7 times etc.

Try this and let me know what you find:


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} MOST OF THESE SETS HAVE A SELF DIAGNOSTIC:

UNPLUG TV AND THEN PLUG BACK IN---TURN ON---GREEN POWER LIGHT COMES ON FOR A MOMENT AND GOES OFF.

PRESS AND HOLD “device” and “menu” buttons on front of tv for at least 5 seconds and then release both together.


Watch for power light to blink in a sequence:

1 blink-then 2 blinks-------no error

2 blink-then 1 blink-------X-ray protection

2 blink-then 2 blink-------SHORT PROTECTION*******

2 blink-then 3 blink---------deflection circuit problem

2 blink-then 4 blink---------vertical circuit problem


******2, then 2 is most common---usually means one of the fuses that protect the Convergence IC or IC’s is blown---set will detect no voltage to convergence IC and shut down.


SET WILL REPEAT BLINK ERROR CODE UP TO 5 TIMES AND THEN TO GET IT TO REPEAT MORE YOU HAVE TO UNPLUG SET AND TRY TO TURN ON AGAIN.


IF IT IS 2 AND THEN 2---USUALLY
CONVERGENCE CIRCUIT PROBLEM

let me know what you find--hope that you find 2 blinks, a pause and two blinks--this is the most common and easiest to fix.

if this has helped you rate this solution as I do this here for free.

SD TECH

4 blinks of the amber light says that the ink is empty, at least 1 cartridge is empty.

You first need to make sure your memory is secure.

or a new lamp. you could first replace the lamp.
the screen might work fine for a couple of seconds, but then it fades away or deteriorates. This means the lamp is going bad.