Lost Grid Data in Los Angeles

Hi Ray... I'm your neighbor (Santa Monica) and have 2 DHG-HDD250's... One rebooted itself a week ago, and while I have a an accurate clock, there are only about 3-4 lines of grid remaining. It does seem to be recording shows that I had previously set up. I'm wondering
what the next step might be? I have not been into the 9181 service menu, as of yet. Might this require a "reset or default TVGOS" command, or some such thing? Any ideas out there?

I am OTA only v. 1.2.21 firmware-- BTW My other machine is fine w/ a full grid

I have been experiencing loss of grid info for at least a week, maybe more. I have two machines, a 500 and a 250. The problem I'm having is that both machines are simultaneously resetting at least once every hour, and several times a day twice an hour, at around 3 or 4 minutes past the hour and half hour, I have most of my grid but Ch 11 & 13 seem to have a lot of "no listing". This is very perplexing and I was wondering if anyone else is seeing the same issues?

Could either or both of you check the "error re-set page" in the 753 menu to see if you are experiencing a similar reset? This could be the cause of your loss of grid info.

Just to add to my issues I had a 10 minute power outage yesterday (breaker tripped) and now my 500 has lost it's grid completely due to loss of zipcode & timezone data. This morning the zipcode was set but the timezone offset was completely wrong, so I might have grid back when I get home later.

Greg.