David Looser wrote in message
...
"N_Cook" wrote in message
...

Repaired a Technics SU C2000 control amplifier, which is just a preamp.
An
LED displays that it is in this VBO mode.
The SU C1000 has a battery back for this, but no battery pack in the
C2000
unless it is somehow hidden in the faux (poids for your bucks) heavy
metal
sub frame. No monster caps either , so what is this all about ?


Just as a guess, flash memory?

David.



From the C1000 repair and user manual you press a button to opt for battery
operation for no mains hum/ fridge spikes etc presumably (if/after the
battery is charged off
the mains) or opt for mains power to the preamp. So I assumed the same with
the C2000 but no battery or battery switch or anywhere obvious a missing
battery could be/have been connected/located.
If it was not for Technics make and going by the heavy lump of metal, for no
functional purpose, I would have said it was a con.


--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/