Loosing all 21 ota's on 211 and 222's

[crrscott]

Local ota channels 21-1,2,3,4 are dissapearing on 211's and 222's. Not the 622's or 722's. On the 222 we are getting title bar with signal level from 70-90's but black screen with no audio. Other ota's are fine. 211's will lock up if you tune to one of the 21- stations and have to re-boot to get off the channel. Has happened on 3 211's now and 4 222's. I swapped out a couple of the receivers for customers and it happened again on the new units. OTA hooked up directly to the TV's works fine....??????
Anybody have a clue?

[wreck]

Local ota channels 21-1,2,3,4 are dissapearing on 211's and 222's. Not the 622's or 722's. On the 222 we are getting title bar with signal level from 70-90's but black screen with no audio. Other ota's are fine. 211's will lock up if you tune to one of the 21- stations and have to re-boot to get off the channel. Has happened on 3 211's now and 4 222's. I swapped out a couple of the receivers for customers and it happened again on the new units. OTA hooked up directly to the TV's works fine....??????
Anybody have a clue?

I just purchased a Phillips indoor antenna and am still trying to "tweak" it. I'm experiencing the same "lock up" issue with my 222. I'm only getting about a 70 max reception in the North Dallas area. I'm going to try to see what a signal amplifier will do with it this evening. I read that this might help if I use an amplifier and then use an attenuator. (I realize this sounds nutty -- but someone was "swearing" by this!)