I've fixed a few of these
The flash memory chip that stores the saved settings is corrupt and at end of life.
Every read returns corrupt data.
The chip is an 8p DIL chip, can be got from Jaycar for about $5 or so.
24LC16 SERIAL EEPROM 8 PIN DIP
16K
I2C
Electrically Erasable PROM
Single supply voltage down to 1.8V
Low power CMOS technology
I2C compatible
Schmitt trigger inputs
Jaycar price NZD 4.90
It's the only memory chip on the whole board, so easy to locate.
To repair:
Remove old chip, read out contents with EEPROM programmer.
Program new chip with same contents (the fixed memory area containing config and serial number etc is not corrupt)
Solder new chip into board
Problem fixed.
დამეხმარეთ ამის თარგმნაში......ვერ გავიგე სადაა ეს ჩიპი....
The chip is extremely easy to locate on the board - take the cover off and look, and you see it straight away. There is only 1 memory chip on the main board!
რომელ ბოარდზეა საუბარი