© 2009 Toshiba America Consumer Products, LLC. Page 1

No: LCD2009-04 1 Page Product: LCD TV Date: 4/27/2009 Models: 22AV500U, 26AV502U, 26AV52U, 32AV502U, 37AV502U, 37AV52U, 40RV525U, 40RV52U and 46RV525U

Product Safety Precautions: Product Safety Precautions are described in the Toshiba service manual(s) for models covered in this bulletin. All safety precautions and checks shall be complied with before returning the equipment to the customer. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damages and may expose themselves and others to possible injury.

Application: The information contained in this bulletin applies only if you encounter the

symptom(s) listed below. Symptom: Random loss or lock up of the TV Video and Audio. This lock up may be

observed while viewing the TV and by a variety of picture symptoms. The primary symptoms are no video with a backlit screen and any variety of colored backgrounds. Often a line or lines are present on the screen. There will be no audio with the possibly of a slight popping sound heard from the speakers. The picture and sound will return to normal after turning power off and returning to the on condition.

Cause: Video / Audio processing randomly locks up. Solution: Replace “Main PCB Assembly” using the part number as indicated in the

service documentation for the model being serviced.

Toshiba America Consumer Products LLC.

1420-B Toshiba Dr. Lebanon, TN 37087

www.tacpservice.toshiba.com/tacp

TECHNICAL BULLETIN