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Hi , I`m Jack Perhaps I can help you with this problem , please send me a reply when you see this ?I would also require the tv`s model number please ?
I take it that there are no converters or cable boxes in the rooms but the tv`s connected directly to the cable system ?
O.k and did you perform a channel search /auto program on those tv`s ?
o.k and did it find those digital channels during the search ?
what you did was the AUTO TUNING is that correct ?
during the auto tuning , did it find digital channels , analog channels or both ?
so you still have analog channels on that cable system .
Do you want to keep both or digital only ?
o.k then this could take a while but you will need to to back to the channel menu and this time select manual tuning and delete the analog channels it found .
You can also use the option CHANNEL EDIT in that menu to do that but start with MANUAL TUNING
Once the analog channels are gone then just using the channel up/down buttons should do it
Give it a try on one of them and let me know
here is the manual , look on page 39/41 ; http://data.manualslib.com/pdf/10/933/93295-lg/32lh240h.pdf?f5228f3d01a8cc03dff9430b811c8ca4&take=binary
Basically how it goes once you`ve opened manual tuning is that you select analog and delete everything it found in there
Certainly hope you don`t have 200 rooms !
You could be there for a week :)
Here is some added info for you , check this manual for cloning the other tv`s once you have that one tv all set ;