20 Most Recent Proscan PS27123 TV - Page 9 Questions & Answers

Please check out the cable connector first, if it is OK, it could be the cable is not connected to the main cable distribution box.

In most of the case, the problem is defective LED back lights strips. You may try a new power supply first.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main digital board.

Sorry but you are on your own on this, we have no way to look it up.

Try resetting the electronics to the set.

If you wish to get some details; visit the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size./

Why are you trying to take the back off? You only need to plug the power cord back in. Just look hard at the tv upside down and you'll see where the wire plugs right back into it. Hopefully it didn't break the connection on the inside. If it did then you're gonna need another power board.

Do a reset to this TV, and then check. 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; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

There are many online stores that have replacement screens. It is a rather complicated job since every part of the TV has to be removed to get at the screws that hold it in the bezel. Do a search for TV screen replacements and you'll have many to choose from.

Look for a reset button on set or check with the manufacturer for location of one., if any.