OT: FSP NB Plus, user settable voltage, ps

[N_Cook]

Nothing wrong with it and no reason to go inside, owner bought it to replace
the standard "wall-wart" for some kit, it is stylish, slim and glossy black
, so more elegant.

As very slim , presuumably switch mode. You set the voltage between 15V and
21V. 1amp rating, by use of a matchstick into recessed holes for set plus
adjust , voltage shown on an illuminated watch size LCD display , display is
on all the time. Presumably voltage stored in an EEprom or similar. Just
curious, is there any likelihood/known history of mains-bourne glitches
corrupting such an eeprom in close proximity to mains wiring, ie set for 15V
and unknowingly jumping to 21V ?

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

 

[JB]

"N_Cook" <diverse@tcp.co.uk> wrote in message
news:h6bcc5$u48$1@news.eternal-september.org...

Nothing wrong with it and no reason to go inside, owner bought it to
replace
the standard "wall-wart" for some kit, it is stylish, slim and glossy
black
, so more elegant.

As very slim , presuumably switch mode. You set the voltage between 15V
and
21V. 1amp rating, by use of a matchstick into recessed holes for set plus
adjust , voltage shown on an illuminated watch size LCD display , display
is
on all the time. Presumably voltage stored in an EEprom or similar. Just
curious, is there any likelihood/known history of mains-bourne glitches
corrupting such an eeprom in close proximity to mains wiring, ie set for
15V
and unknowingly jumping to 21V ?

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

More likely flaky switch or foreign matter. It may also be a problem with

the metering rather than the voltage.

Sounds like a replacement laptop supply.