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Topic: EIKI convergence problems
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Joined: Feb 10, 2010
Posts: 8
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Has anyone found a way to repair convergence problems on an older EIKI projector? As they age and suffer from lack of maintenance the LCD panels appear to be shifting out of alignment causing a "shadow" effect. I understand some models have adjustable panels and some don't. We're trying to avoid replacing viable equipment but also understand that some repairs are more exorbitant that the cost to replace.

Any ideas/recommendations are welcome...thanks in advance!

Daniel Baham
Richardson ISD
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Joined: Jun 11, 2007
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If the panels are permantly affixed to the prism assembly, as most lower cost units are, then the answer is no. Those are aligned at the factory and permanently attached, there is no adjustment. At least not mechanically. Some units, not many, had the ability to to alignment electronically in a hidden service menu. As I said, not many had this, especially with relatively inexpensive models.

Assuming you have neither of these options, then the cost of the new optical engine would make it time to replace the projectors.

If you have a tech person, have them open the unit and see if there are any adjustment screws on the LCD panels. Have them find a service manual to see if there is an electronic adjustment.


Quote (dpbaham on Feb 18, 2010 2:26:45 PM):
Has anyone found a way to repair convergence problems on an older EIKI projector? As they age and suffer from lack of maintenance the LCD panels appear to be shifting out of alignment causing a "shadow" effect. I understand some models have adjustable panels and some don't. We're trying to avoid replacing viable equipment but also understand that some repairs are more exorbitant that the cost to replace.

Any ideas/recommendations are welcome...thanks in advance!

Daniel Baham
Richardson ISD

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I am getting ready to open up a salvaged EIKI projector that went bad a while back and will look for those adjustments. Your advice was great thank you! I am starting to believe that poor filter maintenance may be leading to the distortion/damage of the LCD panels. Every projector I've inspected with a convergence problem has had a filter that contained years of dust. Would heat be a significant factor in LCD panel damage?
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I wouldn't think alignment would be affected, that should not happen in a fixed assembly. But your units seem to make a case for that possibility.

Trapped heat can acccelerate the degradation (burning discoloration) of the polarizers. It might also affect the LCD panels themselves and cause them to degrade as well.

Typically however, too much trapped heat and the projector is supposed to shut down.

Quote (dpbaham on Feb 19, 2010 6:07:59 AM):
I am getting ready to open up a salvaged EIKI projector that went bad a while back and will look for those adjustments. Your advice was great thank you! I am starting to believe that poor filter maintenance may be leading to the distortion/damage of the LCD panels. Every projector I've inspected with a convergence problem has had a filter that contained years of dust. Would heat be a significant factor in LCD panel damage?

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