Picture After the TV is running about 15 min. the picture goes black or pixillated. the bulb is still burning though. Samsung Model HLM437W.

Repair the playback

I have samsung TV 40 inches flat screen comes on the picture ok but within 10 minutes the picture goes black and white

Bad flyback transformer. It has a short in the winding making the Horizontal output transistor heat up so when its too hot the set goes into protection.

sounds like swollen capacitors to me see what i mean here


Samsung LCD TV Failed Power On Clicking Repair

my advice is that if the project is getting expensive kindly invest in a new tv. i am nt familiar with that set but you are having a micro processor problem replace it and your tv will work fine as it was before good luck.

GO TO MENU, THEN SETUP, SCROLL DOWN TO TIMER AND MAKE SURE IT IS ON 0 (ZERO) MIN. SOUNDS LIKE ITS PROGRAMMED TO GO SLEEPAFTER A CERTAIN TIME. THIS TV ALSO CUTS OFF AUTOMATICALLY IN 15 MIN. IF ITS TUNED TO A VACANT CHANNEL( NO PICTURE).

I had a similar problem where my 61" Samsung DLP was turning itself off very frequently I had resolved to try replacing the bulb. I called a local TV repair place to see if they had my buld in stock. The guy I spoke to actually told me how to fix my problem! There is a little blue switch behind the bulb access door. The inside of the door has a little piece that presses the switch down. The switch is supposed to work correctly weather the switch is in the up or down position but samsung forgot to take expansion from heat into account. If the switch is held in the upper position by the door and the plastic expands to a certain point, it triggers the set to shut off. This does not occur of the switch is held in the lower position. What you need to do is take the access door off and put it back on by sliding it into position from above. That will hold the switch in the down position, eliminating the problem. My set has not **** itself off ever since.

try to resolder your vertical output IC thats a commen problem when the tv does that

Not your bulb, prob with the display unit. Could be a driver or decoder IC...accordianman