Sony rear projection tv will no longer focus. tried flash focus & manual focus

The convergence amp ICs are bad.

Adjust focus block, then adjust each of 3 lenses. loosen w/ thumbscrew, then turn cylinder to focus onto screen. Focus each by covering the others w/ typing paper, then tighten.

lgray1010,

Try using the Flash Focus to/or manually try to dial in the convergence. If you are unable to focus the TV using its convergence adjustment it's time to call the TV repair guy. Figure on between $250.00 and $400.00 USD.

-Chris

with this type of tv, you can be almost certain that something has gone wrong with the lamp or the cooling system for the lamp. the cost associated with these kinds of fixes are usually more than the unit is worth. The life span on rear projection TV's is not all that good,5-10 years. some last longer. but for most this is a good estimate. this tv has an auto focus feature that might help. also if this TV has a SD slot for upgrades, give it a try as well.

take off the back of the tv and clean the lenses and the foggy picture will go away

This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually charge between $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

you have convergence circuit failure
there are a couple ics and a pico fuse or two that will need to be replaced

if you have the tools and some know how and can solder
the parts are available at tv repairworld

hello do these checks first Adjust the Picture setting in the Video menu (see page 49).
❏ Adjust the Brightness setting in the Video menu (see page 49).
❏ Check antenna/cable connections.
❏ Adjust the convergence again using FLASH FOCUS (see “Adjusting the
Convergence Automatically – FLASH FOCUS™ –” on page 33). if this don't work get back to me and we'll try somethink else thanks

shaun

Its a Common Problem with Projection Tv's ~ If your flash focus is not correcting the problem, And It can Not be Adjusted in your service menu: under Manual Convergence, your IC chips and maybe a few resistoirs may have failed and need to be replaced!... onegeo

if that doesn't work it will need new convergence IC's put in as well as a resistor or two

electech