Philips TV showing horizontal lines model 27pt6441/37

T-Con board is bad. You can replace it yourself. Parts can be had here: TV Parts Universal TV Stands DLP Chips ShopJimmy

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

if it is a plasma then it is probably leaking

you will have to find fault in vertical deflection try condencer replacement in that stage

If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts

Check for the cracked solder joints on the IC or dried capacitors on the vertical side

Vertical hold circuit is failing.

Check capicitor in vertical hold circuit. You should have solid knowledge of electronics repair before attemping repair. TV's can emmit harmful radiation, and produce voltages up to or in excess of 30kV.

No Worries...try me again sometime....T.

From the looks of the pics you had I see a scan problem if it's a plasma tv. I hope you have warranty coverage. It will be expensive if you don't.

C-Dog

Sounds like you have a power supply filtering problem. Perhaps a filter capacitor is going bad. If your set has a switching power supply oscillations from it are getting into the video. You need to have a tech to check it out for you. You should get an estimate first before having it repaired. Stargazer