Phillips 40PFL3505D 42 inch tv stuck in channel search mode , continuous cycle

SOURCE: phillips 42 inch tv

The stand base part number is 310430814621 and is available for $71.58 from tritronicsinc.com

Dan

SOURCE: Phillips 42 inch Plasma tv

there is internal failure inside..

Steve Allison

• 5569 Answers
• Posted on Dec 16, 2008

SOURCE: Phillips Plasma 42" TV

It is most likely a power supply failure and if there had been no signs of problems in the video display, it is probably the main power supply rather than one dedicated to the plasma display itself.
You might leave it unplugged overnight to give any stored charge inside the unit a chance to bleed off, the remove the back panel.
The primary supply is normally on a separate board and is characterized by having mostly larger components, including one or more transformers with black ferrite cores. The main supply will be associated closer to the AC input while the high voltage supply which may or may not be separate is not.
If you can locate the board with some confidence, check it visually for any signs of heat such as discoloration of board or components. If it seems OK it may be a candidate for exchange or repair by Philips.
I wouldn't advise removing and sending it before you talk to Philips to see if this is a familiar problem to them. 

SOURCE: 42'plasma phillips tv

I had the same problem and fixed with a great online tutorial. Just replace 3 capacitors available at Radioshack onthe the board. 2662, 2663, 2664 1 is a 1000uf the others are 100uf. Max Volts need to be over 25. It worked great, check http://dynamicorange.com/2008/06/25/fixing-a-plasma-tv/
for more detail.

SOURCE: Our 52 inch Phillips Plasma tv is not working

open the back of the set and inspect the power supply board -- there should be two fuses on the board- they cost around 2 dollars at radio shack -- check all connections for wear or damage -- there are two boards in most televisions -- a power supply board and a audio / digital board -- one is probably board