[Noisebridge-discuss] how does one debug an lcd screen?

[Brian Morris]

Zach is the monitor wizard who fixed a bunch of them recently.
I think he is away on vacation, but you could ask him for help.

Brian


On Sat, Apr 30, 2011 at 2:49 PM, Mike Schachter <mike at mindmech.com> wrote:

> I'm working under the assumption that the power supply
> is busted, so I took the thing apart and pulled out the
> board where the power plug goes. This is what it looks
> like:
>
> http://imgur.com/a/pbpea#2spwh
>
> I'm not quite sure how to proceed. There's a bunch of
> capacitors everywhere. To my inexperienced eye, nothing
> looks all that exploded... Should I just take a voltmeter
> and measure the resistance of each end of the capacitors?
>
> If one of the capacitors was messed up, would the resistance
> be infinite? I'm kind of at a loss because none of this involves
> probability distributions, calculus or computing derivatives. The
> board doesn't have any equations on it!?! Maybe I could bring
> it into circuit hacking Monday?
>
>  mike
>
>
> On Fri, Apr 29, 2011 at 8:53 PM, Mike Schachter <mike at mindmech.com> wrote:
> > Hi there,
> >
> > So, I'm not the most knowledgeable person on earth when
> > it comes to electronics... I took an electronics class once,
> > and passed it...
> >
> > I have an LCD screen, a Westinghouse. Kind of like a TV
> > or something. From years ago. It failed on me - it sorta
> > powers on, but nothing shows up on the monitor.
> >
> > Sometimes the ON light just flashes, gradually fading softly
> > into the quiet night. It makes me kind of sad. Sometimes I
> > wonder if I can bury it in an LCD screen cemetery; would it
> > come back to life, only to eviscerate it's hapless owner? My
> > final screams should rightfully go unanswered, having toyed
> > with things that unknowing humans should not. I'd like to
> > avoid that. At least for now.
> >
> > So... does anyone know how to debug problems with LCD screens?
> >
> >  mike
> >
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