I have purchased and successfully installed more than a dozen of the RCA Mod DTA800B converter boxes. All have been in operation for several months or more and running fine. After the digital switch, I rescanned some of the units and some channels were moved some channels were added, all worked fine. Yesterday, one of my users reported a problem of no response with a unit. I had them turn power off, restore the power, reset to factory default, and start the rescan for channels. The rescan found 4 channels before hanging up at 20% complete. I lef it at 20% for more than an hour. My scand are normally complete in just a few minutes. I brought a replacement unit to the site and all worked fine with 24 channels available. I did a rescan and the same exact problem occurred at the same 20% completion point.

I took another unit to another location to eliminate antenna or other problems. The unit displayed many of the 28 availible channels but after initiating a rescan, it also hung up at the 20% point with only 4 channels. I have not discovered a way to return the units to the prior state. Reset to factory default does not correct the problem.

I still have two units that have been successfully rescanned since the digital switch and they display all channels correctly. I do believe rescanning them now would again duplicate my problem. This looks like a bug in the box to me.

Any suggestions?