My panasonic cinemavision hdtv 1080i will not give me a picture. When I hit the power button it just flashes 3 times in a row.

If you are using the remote, try changing the channels manually from the set. If you are using a Hi Def box, use component cables and connect to a Input.

The power light keeps flashing and the tv won't turn on. If you unplug for a minute and hit the power button it sound like it is coming on then it shuts off and the red power light flashes slowly. The TV is a Panisonic 1080i HDTV, about 6-7 years old.

IC4511 isnt comunicating. Replace the DG board

Hi,
All that mess in picture is due to failure of convergence output chips in this tv.
Replace convergence output ICs (two ICs) to solve picture problem. Required ICs are available in Part Store, click the link to have price info.
Thanks.

Check the power light for blink code--usually if this model shuts down the power light will blink in a sequence--3 blinks a pause and 3 blinks is short protection--usually means a convergence circuit problem.

Let me know what you find--I am here to help.

if this helped you rate this solution as I do this here for free.

SD TECH

Did you check the 2.2 ohm 2watt resistors? As often one or two will blow when the old ICs fail. The 3 blink error is indicating a problem with the convergence circuit still.

go to this link for the manual.

http://www.retrevo.com/search/v2/jsp/downloadPage.jsp?doc=d17d8491251fb501911086409da7f697&modelid=275504&q=Panasonic+PT-47WX49

Thats the error for the convergence. The following repair kit will usually repair that. The kit contains the parts and instructions with pictures on how to do the repair. Heres a link to the kit for your model. http://servicemanuals.vstore.ca/product_info.php/pName/panasonic-projection-tv-convergence-repair-kit-2/cName/convergence-repair-kits

thats the error for the convergence ICs You will need two STK392-110 Convergence ICs you can get replacements at the following link.
http://servicemanuals.vstore.ca/

Most likely a power supply failure although the flashing of the LED a fixed number of times may point to something else such as a lamp failure. If you can find a forum for this series, you may find a Panasonic tech who can give you a better read on this.