Philips model 42pf7321d/37 when hit power button blue light flashes one time then nothing.checked power supply and all caps look good.And green light stays on in middle board.

The line output section circuit works as soon as you switch ON the TV, and then come across any short circuit inside the set, and shuts off. That is happening here now. You must check the set, and trace out this shorted or damaged component/s. If you're sound in electronics, download the repair manual to this model set by internet, and carry on. If you're not sound in electronics, contact any service technician. If you wish to get some details about repair work, check the site linked here. http://electronicshelponline.blogspot.com/
Pull up previous posts or type in the brand name and model number to of your set, to its search box, and press 'Enter' or view it in Mosaic / Timeslide option.

Your problem could very well be related to the defective Caps. Have them replaced with quality caps such as Nichicon or Panasonic.

Look in the manual. (Page 4)

Turn the TV on From main supply: Ensure that the main supply is turned on. A blue indicator light on the front of the TV lights up. When the TV is turned on by the main supply, the blue indicator light will blink for 45 seconds. This is the lamp's start-up period. When the light goes off, press the POWER button on the remote control or power switch. Press POWER to turn on the TV.

http://www.retrevo.com/support/Philips-60PL9200D-TVs-manual/id/633ag423/t/2/

Telephone number Philips Customer Care Center: 1-888-PHILIPS (744-5477)

Did these caps look bad?

Hello,

Ur power supply board is dead, u know basic electronics’ and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get ur tv power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.


Hope this helpout........

philips 42 plasma flashing blinking 4 red lights 42PF7321D/37 screen does not come on need help

power supply board going bad

it isnt the Y-SUS board, it is the Power supply, iv fixed this exact problem twice in the last month, try turning the tv on, and when it turns green, unplug it real fast, while light is still green, after 15 seconds plug it back in, then hit the power button, if it dont come on, hit the power button again, this time, as soon as it turns off, hit the power button again to turn back on, sometimes you can trick the tv and it will turn on, at least i was able to do it, and once it comes on, it should work fine, untill you turn it off again.

relay clicking is a power board failure --- part of the board still works to supply power to the flashing lights--- the lights are related to an error code while in protection mode

flashing 4 times in 3 second