Fred, Shorted tantalums most likely. I had several on mine that went bad as quickly as I replaced them. I would start with the inguard supply board.
I think the 4708 manual is available for download at KO4BB or xDevs. If not, I can dig up something. I have a set of the manuals. Todd On Thu, Jul 20, 2017 at 10:01 Fred <[email protected]> wrote: > Today a friend gave me a Datron 4700. It looks like new. It is stored > (working) for many years in the cal lab he works. He was allowed to > take it home (for me, in return I will repair his SA), He plugged it in, > Fail 1 on the display followed by a sound and a smell. > I opened it but nothing looks burned. > > I can not find a service manual, does someone has one ? > > On the back the label shows no options but if he remembers it well it > should have all or at least most options. All slots are filled with > pcb's. The "box" in the left upper corner is full and there is a very > small pcb next to it. There is not much room left. Just enough to store > a small multimeter between the huge transformer and that box. > > Fred > www.pa4tim.nl > > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
