My Christmas gift (OK, I opened it early) says "Info 090" when powered up. According to the manual this is "EEPROM Test #1 failed".
At power up, relays click for a short period, and the display says INFO 090. The front panel buttons make the display change to many wonderful and cryptic things that I'll figure out later, the tuning knob makes things change, so I think the display board is working On the control board the regulated +5V is in good shape. The 4 MHz clock on U6 makes 5v Peak to Peak on pin 14 and is easily adjustable above and below 4 MHz. Pins 1, 2, and 3 of U7 (EEPROM) have short bursts of 5V P-P data at power up and then rest at +5V, supply and ground pins on U7 all have expected voltages. The D to A converter, U8 seems to be working, it generates a 5V P-P tone signal on pin 4 shortly after power up. Pin 1 rises to +5 volts shortly after power up. I think the controller, U6 is working, and the EEPROM is bad. Is my analysis way off here? I'd hate to do something rash, like rip out a good part to prove I'm an idiot, or make things worse fixing things that aren't broke. Thanks and 73 Greg WB7RSG _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
