[email protected] I have a sanyo model dp37647, when powered on, the screen flashes and looks like cracks in it, then it goes black.

If you wish to get some details; visit the site linked here. Pull up older posts.
https://electronicshelponline.blogspot.com/

I am of the belief that you may need a new television

Sounds like you just need to change your display mode, look on the remote for a button that says zoom, also in your display menu with your remote, there also should be a setting that allows you to switch from standard widescreen etc. choose full screed or wide screen mode that should get you back to full screen, please keep me posted I would be glad to Trouble shoot this issue until resolved.

You can find the manual at http://www.retrevo.com/support/Sanyo-DP37647-TVs-manual/id/7048bh144/t/2/

Sorry,no not as a whole tv anymore.Cost the same as a new tv,if require a replacement of a new LCD panel.Tv now,only can be salvaged as only for it electronic boards for spare parts,that it.

Tries the broadcasting incomming signal cable,with another tv connected to see,if can get the red color,if no than,the imcomming the broadcasting cable it the problems.If yes,ur tv have a Tuner board problems,it dead.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner signal board for the replacement.

Check the lamps connectors on the backlight inverter board make sure they are not loose. You may be ahving failing inverter board itself.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Please post back what you find.

The board where the a/c power cord go into it.That ur power supply board,that board is dead,replaced this board.U will have ur power back.Tries websites like Shopjimmy.com,Ebay.com to buy a reburbish power supply board for the replcement.

Take the tv to pc world and thay will replace it

When there is neither picture nor sound you're likely in need of a service or replacement of the main board.

Service is usually the way to go as replacement is unable to find or too darn expensive, at least in the past year or so.

The typical indication of this problm is that the front light doesn't just stay green, but actually blinks for a second every 15-20 seconds.

If it does that you're definitely in for service.

See more at
http://blog.coppelltvrepair.com/2012/07/sanyo-dp47460-dp42840-dp46819-and.html


The DP37647 model isn't listed there as we're planning to post about it in a separate article...however it has the same symptoms as some of the others.

If you want to send the board in for repair , shipping instructions can be found at http://www.coppelltvrepair.com .

It really isn't a simple DIY service like a fuse or capacitor replacement.