20 Most Recent Hitachi 42HDT79 42 in. Plasma Television Questions & Answers

If the tv was on when you unhooked it there is a cooling fan that didn't get to cool off the picture box and it has overheated and you will have to replace the box you can order it off of eBay it takes a few moments to replace it if you still have your owners manual it will tell you all about the lights on the front of your tv I've had to change mine out a few times hope this helps Merry Christmas

Try changing the fuse in the plug or making sure the power lead is pushed in the tv maybe a difrent socket. if these are ok then there is some thing wrong with the TVs its self could be a number of things better of taking it to a shop to be looked at !! Hope this helps !!..

Excuse me brother, but if you have the owner's manual and the TV set in front of you, actually you are in a better position to find audio output. I don't have YOUR manual. Anyway, you can download one from the link I'll provide you, maybe it is more explicit then the one you have Look at REAR panel and search for word "AUDIO OUT". If the plugs of your headphon won't fit AUDIO OUT connections take it a photo and go to a computer parts shop with your headphones ans purchase the appropiate converter http://www.hitachiserviceusa.com:8080/55HDX99.pdf

Check the speaker/s first. If found OK; check and replace the damaged component/s at its audio output section circuit board. If needy, 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. Surf the site with patience. http://electronicshelponline.blogspot.com/

Check and replace damaged component/s at it main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. 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.

Hi how can i fix muy tv its on standby

Hola que tal oye porque cuando prendo mi tele Hitachi 42hdt79 se pone en standby se escucha todo pero no se mira nada ni le puedo cambiar de canal ni subir volumen

If you wish to get some details, check the site linked here. http://electronicshelponline.blogspot.com/ Pull up older posts. Check the site in 'Mosaic' view. It will make search easy.

check all electrolytic capacitors (cans) in the power supply (the board the mains connect to for flat tops (if the can has a rounded top it has failed and, must be replaced

Main board is possible but power supply board should first be tested.

this problem is from smps power supply of your tv circuit, may be power capacitor may be short , power transister may be short pls check some spair of power supply

A blown fuse is indicating a short in the power supply. The power board will most likely need replacement. You can get the replacement power supply board from www.tvcircuitboards.com

check at the power supply board.

It of course may be a audio problem in the set (main board) but is a box or anything external being used for sound on the set? Same problem with a DVD etc the only thing connected to the set?