condensation in sealed units

[lesbirch]

My 12yr old windows consist of hardwood frames with sealed double glazed units. Frames are ok but many sealed units now have condensation between the glass sheets

Does anyone know of a method of correcting this other than replacing all the units concerned.

 

[breezer]

the seal has "gone" so unless g'tee is still valid..... so dont think there is much you can do