View Full Version : Is Keystoning and Convergence Adjustment possible on a Sony KDF-E50A10?


JaySound
07-04-06, 04:32 AM
In March I purchased a Sony KDF-E50A10 LCD RP Set. I am generally very happy with it but still plan, eventually, to get an ISF calibration altho' it isn't bad out of the box. What does bother me tho' is that the picture has fairly significant keystoning. Vertical lines are noticeably wider at the bottom of the screen than at the top. This is even more apparent (and annoying) when watching an un-stretched SD picture on the 16:9 screen. Also, static convergence could be slightly better...there is a red edge along the left side of images and a green edge along the right side.

I had an "official" factory authorized Sony service tech come out to the house shortly after I bought the set and he said "they are all like that. They all have keystoning and convergence issues that can not be adjusted out. He then left without doing anything and said that I should enjoy the "great" picture that I have.

I've a got a Sony WS510 downstairs that I had ISF calibrated and it looks fantastic. Perfect geometry and convergence (altho' I have to touch it up now and then).

I purchased a service manual for the new 50A10 and altho it describes how to get into the service menu, it doesn't define any of the codes. I have seen a number of postings for codes for the CRT Sony sets, but none for the LCD RP sets like I've got. Also, its possible that the keystoning issue can be resolved with a mechanical adjustment to the LCD engine, but I can't get a straight answer from Sony.

Please Help!

Thanks,
JAY

ghostlyshark
03-06-07, 12:35 AM
Hey, I had the same exact problem and still have not had anything fixed. I don't even have the service manual though. Have you found an answer? Do you think you could help me out please? Thanks -gs

ltd76gold
03-08-07, 12:59 AM
Vertical lines are noticeably wider at the bottom of the screen than at the top. This is even more apparent (and annoying) when watching an un-stretched SD picture on the 16:9 screen.

Due to the close proximity and narrow angle from the LE to the mirror/screen, it is not uncommon for some keystone to be viewed...especially with 4:3 images.

The Sony techs "they are all that way" is basically true. Physical manipulation of the LE may help some, but only marginally.

Also, static convergence could be slightly better...there is a red edge along the left side of images and a green edge along the right side.

If memory serves, in service there is a R/B pixel shifting control that should eliminate up to a 3 pixel shift. May not be on your particular display although. I suggest you research the forum thread for your TV.

Good viewing,

Doug k