Code 34 replaced lamp with 2 new osram lamps may run for 5 min or 5 hrs shuts down solid red light code 34

SOURCE: Lamp failure indicator

I had the same issue when replacing my lamp for the first time. I replace just the bulb with the Phillips replacement bulb. After installing the power down issue started and it would take up to 7 attempts before the TV would stay on with a picture.

Since I never had this problem until i replaced the bulb i decided to send the new bulb back and replace it with a difference one. In my opinion replacement parts are never made to the same standard as original OEM parts. This TV is definitely very temperamental in regard to the bulbs.

When the second replacement bulb arrived I decided to not only replace the bulb I also cleaned the connector plug in the cartridge with a QTip and alcohol. I did the same for the plug receptor in the TV.

When I replaced the bulb i insured the the top of bulb lettering was facing the handle of the cartridge so when you put the cartridge back in the TV the top of the bulb would be facing you.

I also cleaned the entire inside of the TV where the cartridge is inserted including the screws.

Once I did all this the TV turned on the first time and has been working fine for three days now.

I do believe the replacement bulb position is very important as to how it heats up and determines when it needs to cool.

I hope this helps others with the same success i had because I really do not want to replace this TV and start replacing all the parts others have done with little to no success for this issue.

SOURCE: can't get to lamp light

Remove backcover, at the left side of the set you find a black cover with some warning signs.If you need a repair manual just mail me.
My emailadres is my profile name @hotmail.com.

Grtz William

SOURCE: I have a 52 inch

The lamps are powered by the ballast board which in your case is faulty and it will have to be replaced - a very common fault in this type of tv's. The rest of the tv functions as it should.
You didn't posted in your question the exact model of your tv so i can't point you to a replacement board.

SOURCE: Mitsubishi DLP - WD-60737 -

Hi,
This tv has self diagnostic feature that will show last error through front light blinks, there is procedure to activate and read out error code to diagnose problem section of tv to solve its issue so to get tv back in business.
Let me know to proceed.
Thanks.

SOURCE: mistubishi tv humming and clicking sound, blinking picture and shuts down

It may be the Ballast or something else---have you tried (what is model) the self check most of these sets have?

Another less likely but possible cause is :

http://www.fixya.com/support/t12296849-turns_off_shortly_after_turn?mt_f=viewFull162