Blue Light comes on but no picture

power supply issue

Tries unplug,replug about 1 hour later,if doesn't work,than Ur main video backlight board it dead,must replaced.

Replace digital board. Common for this set.

probably needs new scan drive board along with upper and lower buffer boards. it wont be cheap and its best to have a tv shop do it.

Each pixel of a plasma television contains a red, blue and green phosper. These immite a flourescent light individually to produce a nice bright picture. The odds of all of these pixels dying at the same time is so slight, it is likely to never happen before the return of Christ. So your black screen is another problem. There is an ultroviolet light emitting photo that causes these other photons to give off light. My diagnosis without actually inspecting your unit, is that your ultraviolet photon generator needs replacement. These usually last in an excess of ten years so while it may be a costly repair, if you otherwise are happy with your unit, you may want to repair it. Your only other option is to replace it.

I think you have problems with the digital main PWB.

If the power PWB failed, turn off and change the pilot ligth to red.

Hi...I am sorry to say that I had this exact problem. It ended up being the upper and lower panel drives. I contacted Hitachi and even though my unit was out of warranty, they agree to pay for parts. I paid for labor myself, and it cost me $199.95.

Good luck with it...let me know how it turns out for you.

vertical red line on screen - I have a Hitachi plasma 42HDs69

how do i fix p50h401 blue light no picture and sound

Ok,Sounds Like the tranformer was not set up Properly,Contact me in Tech support online my Screen name is ttech