|
when tv is "cold"make the samsung startup noise, then screen screwy
EDIT: media added. Didn't catch the sound glitch, but caught several variations of the video glitches and restarts.
ANSWERS:
@paintufast start off by removing the back and take a good look at the boards. Since you've already replaced caps on this one, you know what to look for. Also, check the IC's and heatsinks for any obvious damage. Since it is sounds and screen that is screwy on startup, you want to check the Main board closely. Also, check the voltages from your power board to the Main board. Post some good pictures of your boards with your question so we can see what you see. Use this guide Adding images to an existing question for that.
Because you cannot turn it off during a period of time, I would focus on the main board. You can check some of the 3.2 volt regulators on the main board during its "warming up" period and see if they are low and unstable. Another thing to try is get a can of freeze spray and while having the back off and the set "warmed up" and running normally, chill down various regulators and areas on the the main board to see if you can make it go back to its failing condition without letting everything cool down.
I had the same problem. Opened it up, found a 10V, 470 uF cap leaking. I changed it and now the problem is worse. Now it only works if I hook up the antenna to the tuner. If I connect it through the HDMI input the signal is all greenish static noise. I'm going to try the freeze spray when I get a hold of a can of spray.
I had this problem with a samsung plasma tv. Samsung Main Board Repair fixed the motherboard for $45. Removal and reinstallation was easy. Problem totally fixed. Contact Info@samsungmainboardrepair.
| 