Re: Sony shut down



Golf wrote:

Thanks for reply Jamie. The flyback does tick during start up, but I'm
not sure if this is normal or not. I haven't tried ringing the
windings or anything yet.

also, many units derive low voltage from the flyback when it's
fired up. I have found in some cases where this voltage gets
rectified, the filter caps are bad.. and other times, devices
connected to this source are shorted..
the main PS unit also may monitor this source to know when to
shut down the unit if voltage is gone or never gets there after
a couple of sec's


--
"I'm never wrong, once i thought i was, but was mistaken"
Real Programmers Do things like this.
http://webpages.charter.net/jamie_5

.



Relevant Pages

  • Re: Repearing a telephone
    ... Ringing voltage is ... With those you may get anything from 18 volts to dry cells inside the phones ... When ringing is applied at the telephone building, to call the phone it is ... telephone system; ...
    (sci.electronics.repair)
  • Re: Need 66-block help. 1 POTS line, 8 jacks
    ... You're just not supposed to be touching the wires. ... too much sweat and a couple of lines suddenly ringing... ... When they "zap" the number (disconnect it via computer), the voltage drops to 48 VDC and there's no dial tone. ...
    (comp.home.automation)
  • Re: Phone scam...
    ... voltage drops on the line and the phone company knows to start billing you. ... company would think your phone was just ringing and ringing and never start ... from payphone for free just by playing a few tones. ...
    (rec.games.pinball)
  • Re: Phone scam...
    ... voltage drops on the line and the phone company knows to start billing you. ... company would think your phone was just ringing and ringing and never start ... from payphone for free just by playing a few tones. ...
    (rec.games.pinball)
  • Re: Edge response, dynamics, and really ugly time constants
    ... milliseconds for the slow ringing.. ... You need to look at the analog control voltage, ... Not the switching transients- all the class D stuff is out of question, ...
    (sci.electronics.design)