2 hour but then the red will be misaligned and you cannot re-line them up. sometimes if you hit the side of the tv it will line back up for awhile or if you turn off the tv for an hour it will be fine again for a bit. Any suggestion on issue and how to fix. Thanks for your help, David
Televison & Video - Apex Digital - GB55HD09W 55" Rear Projection Television
Answers & Comments
Replace both convergence ICs number STK392-020 you can get replacements at the following link and they provide free instructions woth pictures so you can do the repair yourself.
http://servicemanuals.vstore.ca/