I recently picked up a Toshiba TN50V71 & am not sure where to start in troubleshooting it. There is no picture, & the led power light is steadily red.

first place to look is the lamp this set uses, does it come on at all?

Not sure right off bat, however unplug it from the wall for three or four minutes plug it back in it might reset it?

Hello
The main board of your TV should be troubleshooted. It is a very skilled work, and you must have sufficiant knoledge in electronics and expereince to work with digital printed circuit boards. In most cases, the repair to this board will be immpossible, and may replace it as card basis.
This is the picture of the main board to your tV.

hi it sounds like the stk ic need to be replased

hi, sounds like a convergence issue. try this...

Look through your manual. Your manual will always give you the most specific directions for your particular model. Look for an "adjusting convergence" or "set manual convergence" section.

Enter the menu on your TV. Use the remote control and bring up the menu.

Choose "Convergence." This may be under "Picture Settings," "Function" or "Advanced Options."

Select a color. You will have red, green and blue to choose from. Do each one, starting with red.

Press "Enter." A crosshair pattern will appear on your screen.

Adjust vertically. If there is a horizontal red line visible, press the up or down arrow keys (or channel up or down) to adjust the convergence until the line is superimposed on the horizontal-center line of the white crosshair.

Adjust horizontally. If there is a vertical red line visible, press left or right (or volume up or down) to adjust horizontally. Do this until the line is superimposed on the vertical line of the white crosshair.

Save settings. It is important to save your settings when you are done, instead of simply exiting the menu.

Repeat these steps for all colors.
good luck!

wnt *** on

Those 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.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Hello adambardelme,

You did not say if you have tried any specific troubleshooting to isolate the problem. This site has some very good troubleshooting information.

For your amp, there are some very basic things you can check without detailed troubleshooting information. The amp has 3 40 amp on-board fuses. Check them all. Make sure that the "gain" isn't turned completely down. Check the position of the "input source" switch and make sure it matches your inputs.

Hope this helps.

Shorted horz. output transistor

http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html