Kdl 40w600b No picture but sound and back-lit

Here’s what I found. I hope it helps

The Most likely Problem part: BAX-L

It seems to be a very common problem with these models.

Specs:

https://www.sony.com/electronics/support...

https://www.displayspecifications.com/en...

Part sources - Sony BRAVIA KDL-40W600B

https://sony.encompass.com/model/SONKDL4...

https://www.electropartsonline.com/sony-...

https://www.shopjimmy.com/sony-kdl-40w60... (great prices, but out of stock)

There's always eBay too.

Good Video:

SUPER EASY WAY TO FIX MOST SONY LCD TV KDL- PICTURE SCREENS !!!

https://youtu.be/ZvuSkRSx6u8

If you want to go deeper in a video:

How to repair Sony Bravia LCD TV ll Turns On Turns Off automatically blinking led 6 times?

https://www.youtube.com/watch?v=bDWem3g1...

Service Manuals | Sony| TV |

https://servicemanuals.us/sony/category....

Higher level manual for:

KDL-40W580B, KDL-40W590B, KDL-40W600B, KDL-40W605B, KDL-40W607B, KDL-40W608B, KDL-48W580B, KDL-48W585B, KDL-48W590B, KDL-48W600B, KDL-48W605B, KDL-48W607B, KDL-48W608B, KDL-48WM15B, KDL-60W600B, KDL-60W605B, KDL-60W607B, KDL-60W608B

https://servicemanuals.us/sony/tv/kdl-40...

Level 3 Service Manual (detailed):

https://servicemanuals.us/sony/tv/kdl-40...

No Picture Troubleshooting Point - P.63

https://servicemanuals.us/sony/tv/kdl-40...

No Picture Blue Screen Troubleshooting Point - P. 73

https://servicemanuals.us/sony/tv/kdl-40...