Samsung LN-T3253h won't turn on; blue amb & standby lights on

There is something short circuit, within the TV circuit bards.

It sounds like your LCD panel or your T-con board is bad . Panels are expensive so I would replace the T-con board first. You have to open the TV and get the part number from the actual board in order to find the correct one. You can find parts at www.interliquidparts.com

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here.

either the lcd backlight is blew or a buffer board

most likely is the power supply board.

Bad power relay get it fixed before you have more issues the psu cost around $25 bucks on ebay good luck!

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

Call 1-800-Samsung and ask them if there is a Firm Ware Upgrade for your model.. If there is none then you have a bad Main bd and need to be replaced.

If this is for a universal remote, the different manufactures assign their own user code to set up their universal remote. They internaly convert to the proper protocol for the TV based on an internal software table.

Jerry G.

Samsungs will not switch to an input that has no signal going into it. Try putting the cables into the TV, then hit play, then switch to the correct camcorder input.