Dan Rae wrote: > I have one of the "Chinese" E1938 modules I bought about a month ago. > I just tried it out on the bench, and have not had much luck with it. > The 5 Volt supply never goes above 50 mA or so, none of the heaters > seem to be powered looking at the "hockey puck" D-sub connector pins. > The four leds up by the PIC (?) seem to flash once on switch on and > then pulse about once a second. The other led which seems to be on > the 5 V supply is on. It does oscillate, but very low since it never > warms up. > > Is there any point in my trying to go any further with this? It seems > pretty dead to me, the PIC maybe? :^( > > Nice museum piece perhaps, but a bit expensive for only that... > > Dan > > ac6ao > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > Have you checked that the outputs of all the regulators on the board are OK. In particular the -5V rail used by the heater PMOSFET driver opamps?
Bruce _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.