On Jan 31, 2021, at 7:25 PM, John <ve3kkqve3kkq@...> wrote:

?

Perhaps we 8X7 owners should order a new chip, we may just exhaust the world's supply!!

John

VE7KKQ

On Sun, Jan 31, 2021 at 2:55 PM Theo Marinos <marinos.theo@...> wrote:

This is very hand to know. Thanks for telling us.?

Regards

Theo

VK5IR

On Mon, 1 Feb. 2021, 9:22 am rifkum via , <rifkum=[email protected]> wrote:

Hey group,
Thought I'd share my experience fixing my 857. (Probably 15 years old, always used inside)
In the past year or so whenever I turned on the 857 it would not come back to the way I powered it down.
Typically I would have it in Memory mode (not VFO) and scanning VHF/UHF programmed channels.
When I power it on it would almost always come up to a VFO random frequency and be scanning up or down the freq.
About every 10-20 times on power up it would come up with the display contrast dark, with big digits and when I switched to Memory mode and tried to transmit I would get a TX ERROR.
In this mode I always had to reflash the program from Chirp.

I watched a few youtube videos and found that likely it was the EEPROM memory chip had gone bad.
So I ordered one off digikey. The part is Q1066 on the schematic and it is a 24LC128T-I/SN
Pay attention to the package size I/SN NOT I/SM
It was an easy swap if you are ok with SMT

Reloaded the program from Chirp and it has not failed since.

cheers
Dwight