It sounds like the set is going into shut down mode as soon as its powered up...measure the power supply voltages and see what they look like for starters..on most sets there is a legend to tell what voltage should be at what pin...good luck
Change the electrolytic caps on the power supply board use 105 degree and higher voltage working caps if you can fit them on the board its a common problem the power supply is the overworked part of most tv,s etc
SOURCE: Hitachi 32LD8700 - TV won't turn on although has power
The general problem with LCD type TV's is that the power supply
fails. They are very sophisticated designs that are difficult to
troubleshoot and generally best to just replace the module, but
sometimes there is visible damage in some of the electrolytic
capacitors (visibly bulged) and high voltage rated parts can be
substituted.
Hope Ya Fix It
SOURCE: TV Won't Come On...
My Hitachi Model 50V500 led's ligths temperature and lamp blink when power is turn on.Have no picture or sound, followed the reconmended procedure disconnected power
for 30 seconds and reconnected.
SOURCE: will not turn on
This might help you. Try starting on page 27 of this:
http://www.scribd.com/doc/6528782/Philips-42pf7320
SOURCE: my power light on hitachi lcd is flashing red and
Sadly to the end I can now explain the "problem" of my question by myself ...
Because I'm was not sure if I can handle the "problem" by myself I gave the Screen to a technican at our City with all the Information I found until this point (By the way my suspicion was the defect of something at the power supply unit). Two days later he gave me a call with the information about the error: An error at the power supply unit - spare parts => 50€, Work => 200€).
Unhappily im not yet got at soldering on screens, but for 250€ i would have made a good course for this (and if I can establish i will learn it).
So now again a bit more objectively:
Error / Problem:
TV - Step 1: Power Off
TV - Step 2: Stand-By
TV - Step 3: Power-On
TV - Step 4: Short flashing picture
TV - Step 5: Reverse to Step 1
Solution:
1. Find the defect Fuse/Safe/...
2. Buy the Spare part at eshop2.euras.com
3. Change the parts -> et voilá
Hopefully I could have been a little help for someone.
With kind regards,
NatureOneFreak
SOURCE: LG 50 IN. PLASMA TV MODEL # 50PC1DR . POWER
Power supply board is dead,replaced the power supply board will get power.
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