Re: Brother MFC dead after power cycle?

Glenn Gundlach wrote:
On Feb 16, 3:21 pm, Joerg <notthisjoerg...@xxxxxxxxxxxxxxxxxxxxx>
wrote:
Hello Folks,

Since this machine is widely used maybe one of you had this happen:
Moved it to the shiny new office, turned it on, nada, zilch. Only a
backlit blank LCD. Power cycling, pressing and holding buttons and such
produces no reaction.

Any ideas how to fix/reset the thang? Or does this mean it's dead? It is
a Brother MFC-7820N but I think they are all similar.

Jim will say I should have bought a HP. But, my HP needs 3-4 power
cycles per week while the Brother only needed one a month. For today's
design standards in consumer gear that's probably "good".

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

Got an ESR meter? If there was no smoke and it's dead, I bet you will
find at least one 'lytic with very poor ESR. What you're describing is
a classic, see it on older Tek scopes all the time.


Or a dead switcher FET somewhere. The strange thing is that the backlight comes on and that's controlled by the uC on there. It usually gets turned off after x seconds of inactivity.

Pretty sad, after less than three years. Anyhow, got to run some more cables in the lab today, then I'll open her up and take a look. Doesn't appear to be too easy to do and, of course, a service manual is not available.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
.