Why sound but no picture on 2611- txlb tv? - Polaroid 2611-TLXB TV

Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. 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 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.

check the Sounds with Local TV channels.Is it still low?If it is still low sound circuit has to be repaired.if it is ok,sound switching circuit has to be repaired(TV to Video)

Your timing control TCON board was going out and it finally went out, replace that and you will be back in business, they aren't a very expensive board most the time..under 20 bucks...Good luck

Sounds like your fiddling may have shorted out the main board of the TV.

Not to say that this wouldn't have happened eventually, there's a good possibility it was defective from the start.

If you have warranty, try to go through that, you should be covered. Otherwise, for a 26 inch, most likely not worth repairing, good luck!

Polaroid 2611-TLXB remote code for Comcast universal remote is 11687

You need to do some voltages checking, it needds to have at least the standby 5vdc working.
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

Try 11687

check main components in the power supply. You will need to measure output voltages to see where it has dropped off sounds like a regulator has failed,

Yes... It shows on the back of the display how many amps it needs to run, the power supply should meet or exceed that number. it may say something like 4.16A