We can hear a click noise and the LCD light blinks but the picture never comes on. The next day it might work and then stop working again. Sometimes the picture pops on but then there is no sound. We have unplugged and replugged all the cords. What is wrong ???? We've only had it about 2 1/2 years.
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Re: samsung HPS4253 won't turn on all the time
I would suspect the main board "if" the display lights...., look for a dull glow when you turn it on.turn it off and back on ..look again. do you get a menu when you hit the menu button on the samsung remote ? if you see any sign of light and do not see a menu replace the main board.
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These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electro-medical.blogspot.com/
Blinking codes details of many popular brand TVs are given.
May 8, 2014 - Uploaded by ShopJimmy.com
TV Repair Help for a TV With a Black No Image on the Screen ...I Have A Sanyo TV I Can Hear But Black Screen Im 14 And Dont Know What To Do ! .... power button the power light goes from red to green, the screen flashes on then goes black ....Troubleshooting LCD Backlight Failure Samsung LNT-4066 ...
3 blinks indicates lamp door is not on or has not been reinstalled properly. This also could mean the lamp door switch has failed itself. Try removing the lamp door and putting back on, if that doesnt correct the problem then I recommend having the switch replaced.
Plasma and LCD TV sets are prone to having capacitors in the power supply section fail. This is the most likely cause for the probem you describe. When capacitors fail your will commonly see one or more of the following symptoms.
Problem: Samsung LTM1755B with only a blinking yellow LED when you try to turn it
Solution: I just had one of these come in. I opened it up, and found
the U501 capacitor a little suspicious looking, in that it had a
deformed top. It was a 470uF 16V electrolytic 105degC 10mm x 12mm. I
replaced it with a very good quality 1000uF 16V electrolytic 105degC
10mm x 16mm Nichicon UHN1C102MPD. After that repair, when I tried to
turn it on, the LED was yellow for a second, then green, then I got a
picture, and it appeared to work great. I then asked the owner a week
later how it was working, and they said it was working just like new!