Large yellow stain area on wega KDF-60WF655

CHECK OPEN CAPACITOR

hi,
You've got it right, it seems you need to replace the lamp. If the lamp is faulty the unit will not turn on. See the instructions manual for lamp replacement..

If the POWER/STANDBY indicator flashes three times, the lamp cover may not be attached securely. Review the lamp-changing instructions in your owner's manual, and make sure that the lamp cover is securely attached.

If Lamp has never been replace then it will be the Lamp. Mats has them for 99.00 1-800-628-1118

Hi,
Lamp replacement procedure is written in user manual,check page-17
Click Sony Support to download free copy of user manual of KDF-60WF655 if required.
There are two thumb screws at lower corners if you see tv from rear, remove these screws and take out lower front panel, in center of that space, you will see lamp cover, remove it and unscrew old lamp, pull it out and put new lamp then put things back in reveres order.
Required lamp of KDF-60WF655 is available in Sony Accessories Store for $200 under part number XL-2200
Hope these info will help you.
Thanks.

It costs around $84.

See the below link http://www.nextag.com/Sony-Grand-Wega-KDF-615335763/prices-html

Light engine is bad. Contact Sony they have been replacing them due to a class action law suit.

Weak lamp can cause that symptoms, replace lamp in TV to fix this problem.
Lamp replacement in Sony KDF-60WF655 is easy and procedure is mentioned in user manual.
Thanks.

Contact Sony. The light engine or Optical Block as Sony calls it needs replaced. Due to class action Sony is replacing these on many models.

This TV is known for issues with the optical block(light engine) The discoloration is coming from the LCD panels in the light engine that have been damaged by the intense heat produced by the lamp. There is a class action lawsuit settlement between Sony and the New York state attorney general's office. Sony agreed to cover these problems going back 4 model years. if you had to pay for the repairs on this TV, you could expect to pay more than $1000 to replace the light engine. Call Sony customer relations at 1-800-222-SONY
and tell them you want this covered per the agreement I mentioned.