Sanyo DP42746 42 in. Plasma Television - Answered Questions & Fixed issues

Hello,

If you are having sound but no picture on your television, the problem is the t-com board of the television.

Once you have the t-com board replaced, your television will be in good condition once again. have a repairman replace the t-com board of your television and you television will be in good condition once again.

Goodluck and take care

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.

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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 board.

Main system control memory IC fault. Check and replace it. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/

Did you connect an antenna to the TV? It would need an antenna in order to receive channels over the air.

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. Surf the site with patience. 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.

https://www.ifixit.com/Guide/Repairing+Sanyo+dp50747+Plasma+TV+Fuse+-+Power+Board/2229

here is how i fixed mine.......first you want to try to watch your fav show..next, stand up find your car or thuck keys..go to front door be sure to lock the door.....next crank car drive to local hardware store and buy 1 cinder block...pay, get your change return home. next open door place keys on table ....ok this is where it gets tricky.....you will need a clear path to the livingroom, den or media room....pick up cinder block straight over your head ...yell really loud peice of ****!!!!! throw cinder block with great force ,,be sure its released at a 10 degree angle...and ththats how i solved my problem....hope this helps

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/ Error code details to many popular brand TVs are given.

Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

No. Never.

I basically paid $1,000 a year to have this piece of grud. I am having the same problem everyone else is. It shuts off by it's self, then when I try to turn it back on, it shuts it self back off or the picture looks like its having a hard time showing. Very frustrated and feel ripped off.

This is a power board issue. Check that there are blown caps in the power board and replace them with the exact parts.

Check and replace the damaged component/s at its main board. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Sounds like tv is on wrong input. Be sure HDMI wire or cable input is connected to tv. Look at which input it is on. ( like HDMI 1. Or cable etc. take tv remote (with cable box on ) press input / video button and arrow down to different inputs ( slowly ) until the right input is detected or simply go to the right input you noticed the cable was connected to. Different inputs are there for different sources of connections like DVD. Games. Etc. each work like its own tv channel. Good luck.most times this happens when you are watching tv and press the TV. channel button which will take you to a different tv mode

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/

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.Viewing it in "Mosaic" or "Magazine" will make surf easy. http://electronicshelponline.blogspot.com/ Blinking codes details to many popular brand TVs are given.Surf the site with patience.

Sounds like main power regulator board [SMPS] fault. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Contact any service technician. It this case, it will be the best. Gopakumar Gopalan Google