Mr. nfandres. i have tv pricision model#ptv1444,tv has standby light red on when press on and could hear da da noise from power supply tranformer,horizontal transistor & vertical transistor ok. d880 &d882 both 5v transistor ok,please tell me how to solve this problem. thanks.
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Contact the authorized service center for Samsung. It sounds that, you're not sound in repairing this TV. Do not proceed. If you wish to get some details; check the sites linked here. https://elektrotricks.blogspot.com/ https://electronicshelponline.blogspot.com/
Faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault. Search the site by type in the Brand Name of your set, in its search bar at the right side column, and press enter. See it in by Webview with mobile or by desktop. Mobile View has no search box. Screen-shots to defective LCD panels are given. You can see and compare to that to your TVs', and can make sure about the fault to an extent.
tda9380ps /n3/3/1664 using in
sharp tv power supply ok ,but no EHT ,the power LED are glowing red
light press program key to change green light to return in few miniutes
to standby in red light
If the standby light is on and it does not respond, it is most likely to be a problem with the power supply . First try this, unplug and leave the set like that for a few hours. Then plug it back in to see if the tv attempts to turn on when you try to power it up. See if you hear a "click" even if it goes back to standby. Let me know what you found so that I can help you test the power supply board to confirm, if necessary.
there are issues relating to the older models, until the power supply board ahs been replaced and the unit tested, it is hard to say, b and w are fixing units because of the known problems, so check with their service desk.
Plasma tvs do not have "back lights" LCDs do. you probably have a bad driver board along with the upper or lower buffer board or maybe both, best to have a tv shop look at it.
There are two identical IC's I think they are 18 pin more or less about half way up the board on the left side in the power supply. You will know them when you see them. They may be bad. It is a common problem on that model. If this helps let me know.
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