Is EIA code 1101 Sylvania? Zenith AVI set with potential crt problem.

[JohnAdams]

I am working on a 1993 Zenith AVI series, SL2784BT, with a intermittent CRT or a CRT driver module, mounted to the crt socket. ( 1298-03). I have seen a number of negative comments about Zenith CRT's of this time frame, but this CRT has an EIA code of 1101 on it. My memory from the old days,60's, was that 274 = RCA, 343 = Zenith and 1101 = Sylvania. That is why I wanted someone to verify that this set doesn't have a Zenith picture tube. I hate to pay LG $88 for a new driver module and find out that the crt is the problem. You can lightly tap the driver module or the tube neck and the blue quits leaving a green screen. Over the years I have seen mention of the "green" screen and most responses were to replace the module. Seems like it is always the blue that is lost and not the red or green. I have the 32 inch version of this set and never had a problem so if I scrap the 27" set, I will save the modules since most will interchange, except for the crt module.
If some one has a scrap 1298-03, I would be glad to buy it. It seems like that made 3 versions of the 1298 based upon which size picture tube was used, 27", 32" or 36". That keeps me from swapping the modules between the 2 sets I have to see if the module is really the problem.