Toshiba 42hl196 went pop and the sound and pic went out. Has red blinking lite. 3 times

Hi Karen, The link below is a YouTube video showing how to fix a Toshiba television NO picture GOOD sound, Also there's videos down the right side of the link that may help as well........CHEERS..
https://www.youtube.com/watch?v=WtRuUBS9doE
Toshiba 55HT1U repair No Picture

I just had this problem with my TV (same model) and stumbled upon this while searching around:
http://forums.toshiba.com/t5/Televisions/red-light-flashing-on-a-42HL196/td-p/167786

HTH mate!

How many times do this standby light blinks at one time switch ON? Count it. These blinks are fault indications, and are called blinking codes. From the number of these blinks, you can get an idea about the faulty circuit section inside the TV. If you're sound in electronics, check this link. Pull up older posts there by its left side bar, or view it in 'Timeslide' option. Blinking codes to Toshiba TVs are given in detail.

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://electro-medical.blogspot.com/
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.
If the fault is detected with SMPS [Power supply board],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.

toshiba 42hl196 lcd the power led red light flashers totally 3 time on tv on pictuce

It sounds like the timer is set ON in the setup menu.
Turn off the timer and the tv should come 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.

Need lamp replaced first.Find out it work or more problems to fix.

I am sorry Sir, it is no other way out.