Replaced lamp in my HD 61Z575, but when I turn on my TV, nothing happens (no fan noise). After ~10 seconds, the Light LED starts blinking rapidly. Could it possibly be the brand new lamp? Ballast?

If you only have 300 hours on it it should still be under warranty. Before doing something to void that I would check with Optoma techs.

Hi; this could help you.

Check ur tv fan,if ur cooling fan are runnig,before all these LED lights are flashing.If not that ur tv problems.All these LED lights are flashing the tv making alots of clinking noises too like it trying turn itself on?Yes,than the tv board that called the Ballast board it is dead too,must be replace also.This tv Ballast board only job are to help to ignite the tv projection lamp only and keeping it on and running.

Ballast Board? it is what Powers Lamp, or CK Lamp Fan if it stops running and is not Keeping Lamp Cool
set is designed to shut off to Protect lamp from being burted up, you could have either Bad Ballast Board or Defective Lamp Fan,there is a few test you can do to see which Part is Bad.

It normally means the lamp is in need of being replaced, and its all depending on the use of the TV as well as how long the lamp life is. You should be able to access the lamp via a small section near the rear or the back of the TV unit, if the lamp is blown or faulty it will look the same as a blown light globe.
To obtain a new lamp contact the brands authorised repair agent as they will be able to get trade prices and in turn, give you the best price,
Also make sure that whoever replaces the lamp resets the lamp use time as the TV will still not start if you don't reset the lamp use time as it will still think it has a faulty lamp. I hope this helps, good luck.

Hi,
Symptom shows Lamp is weak in result and causing restart of TV again and again. Your TV requires new lamp as per following part number...
A1085447A* LAMP BLOCK ASSY XL-2200U
It is available in Sony Accessories Store for $200 and replacement procedure is written in instruction manual of TV.

Always buy Sony original lamp for TV and avoid aftermarket / cheap lamp for TV safety.

I have a 61" JVC that just stoped working. I turn it on and nothing bu the blue light stays on and the red light blinks 8 times and then the blue light joins in.

Its the lamp

From the manual...

The POWER LED
and LAMP LED are
blinking
alternately.
• It may be a malfunction that the fan is locked or the temperature has increased.
The POWER LED
and LAMP LED are
blinking rapidly
simultaneously.
• The lamp may not have been installed correctly, or it may be due to a malfunction.
• The lamp door may not be closed correctly.

The LAMP LED
continues blinking
• It may be a malfunction of the internal electrical circuits

Gentlemen, I have seen people with this problem and it requires the replacement of the light engine, search AVS Forum, for more information. Understand it is not cheap, hope you have ext warn.