Model D55u-D1 TV. Powers on but no picture or sound. 2 LED's on main board, red and blue, turn bright red for a second then go back to red and blue. Already tried power board.

SOURCE: DP23 LED not lit on deflection board no picture on tv

Good Day, Gil;
Your problem is in deflection circuit (115+v) check these: FP05, DP15, Q777, QH01, TH01, T701, etc. BUT suspect C707 1k pfd, 2kv, and check all the pico fuses (brown) 2" to the right of cap. Good Luck, big IRISH.

Posted on Sep 01, 2008

SOURCE: No Picture & No sound. Red LED, Green LED, Red LED.

If the power supply outputs are good! Then I would say the back light inverter is bad! If the screen stays black and does not come on.

Posted on Feb 28, 2009

Shahid Electronics

• 10594 Answers

SOURCE: TV powers off after 10 seconds of powering on....

Thats great, Please rate solution.

Posted on May 19, 2009

Bud Martin

• 11361 Answers

SOURCE: try to turn on the tv The power indicater light

Power supply will be the first thing to check.
If you are going to DIY and have proper tools and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com

Posted on Jun 29, 2010

The Knight

• 76544 Answers

SOURCE: Dynex DX-PDP42-09 Won't power up.

Hello
The main board is faulty. This is the common problem to most of the dynex TVs. As you know there is no repair to this board. Replace it as card basis is the only remedy to this fault.

Replace this board, rather than making surgery to it and wasting your precious time and money. The cost of the board come around $95. OK.

Posted on Sep 24, 2011