Hi guys,
It seems I am going with a DLT-280 combined tube from Yongli which has just two separate glass tubes and a combiner enclosed in a metal case. It should replace my two GSI tubes. One of which is dead and the other giving me 125W instead of 140W.
I do not expect anyone here to have a laser with a DLT-280 tube and share their opinion on this exact model but I hope some of you may have just a single DC glass tube made by Yongli and can share their opinion about their tube.
There are no much reviews about Yongli on the Internet. I have seen one member here saying they switched to Yongli because RECI started to supply bad tubes but this is just about all I could find.