sony projection hd tv screen off on

[Jose Munoz]

model: sony kdf-e55a20
problem: the screen turns off and on every 30 seconds but the power is still on.
Could it be needing a replacement lamp? thats all?

 

[USAFRet]

Comments here would indicate a lamp replacement is in order:
http://www.justanswer.com/tv-repair/2hnml-kdf-e55a20-sony-picture-will-turn-off.html

Or possibly a blower fan is gunked up with dust:
http://www.fixya.com/support/t233624-sony_kdf_e55a20_shuts_off_30_seconds