Hi there I have a 42la620v lg tv we was watching it and it just went off it was dead so I open it up and the fuse was blown on the power supply so I ordered one on ebay it came I put it in and now all I get is a red light keeps flashing will not turn on is this a faulty power supply thanks

SOURCE: no power,red power lights keeps flashing.

Just my coment THis tv has a complex system that include a digital signal porcessing in a high levle technology to show a good performance, i myself work on the development of that model, we was thinking we are best, for improve that many eng. dedicates almost all life to have that technology in our rooms, I offer my apologize for that but many eng dedicates all year 18 hours a day to fix that, thanks

SOURCE: Plasma TV

did you hear the sounds? or maybe you have defective power source in hot side..

Sonny Berry

• 8617 Answers
• Posted on May 23, 2009

SOURCE: 5 red flashs on power/standby light on kdsr60xbr1 screen blank,

Thats the error for lamp driver error. Which means the Ballast is most likely defective. You can get the replacement ballast for your model at the following link which comes with installation instructions.
http://servicemanuals.vstore.ca/product_info.php/pName/kdfe42a10-ballast-assembly/cName/sony-parts

SOURCE: tv won't turn on - power SUPPLY OK

bad main pcb

SOURCE: LG 42 Plasma try's to turn on but just goes back into "stanby" ?

Check to see if you get Va and Vs voltages from the power supply. There should be some wires running to the y-sus. A couple of those wires will be labeled va and vs. Are they present? There will be a sticker stuck to the panel somewhere telling you what they should be.