Hey thanks again to everyone who helped me<br>out on Monday. I replaced 3 bust-ass capacitors<br>with some scavenged from a motherboard, and<br>everything works now!<br><br>I even have a few screws left over from taking<br>
apart the monitor! Definitely alot easier than I thought<br>it would be.<br><br> mike<br><br><br><br><div class="gmail_quote">On Sun, May 1, 2011 at 11:14 AM, Mike Schachter <span dir="ltr"><<a href="mailto:mike@mindmech.com">mike@mindmech.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Thanks everyone! I'll bring it in Monday then, any help<br>towards figuring out what's wrong would be great!<br>
<font color="#888888"><br> mike</font><div><div></div><div class="h5"><br><br><br><br><div class="gmail_quote">On Sun, May 1, 2011 at 1:34 AM, Robert Belknap <span dir="ltr"><<a href="mailto:rbelknap@gmail.com" target="_blank">rbelknap@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Oooh, count me in on that vacation thing!<div><br></div><div>Having recently done a monitor repair myself, (though I'm even less of an expert than Zach...) what you're describing sounds like 1 or more bad capacitors. Looking at the third picture, I'd say that the cap on the top right looks damaged. It's had to tell from the angle, but the bottom 2 on the right in that same photo might need to go as well. (They won't necessarily look all exploded if they've failed. If you see any kind of bulging, that's a sign that the capacitor needs to be replaced.)</div>
<div><br></div><div>Oh yeah, and the CapXOn brand is the same as what I had to replace in my ViewSonic. If you want to make sure, (and want the soldering practice ;-) (parenthetical smilies look weird) ) you could go ahead and replace them all. I sourced replacements for all but the big 400v one on my board from mouser, and they ran me less than $10, iirc. (The big cap was expensive, and mine looked okay - so I left it.)</div>
<div><br></div><div>Looks like the board has lots of room to work on, and your parts don't look as covered in foam as mine were. :-)</div><div><br clear="all"><font color="#888888">-Robert</font><div><div></div><div>
<br>
<br><br><div class="gmail_quote">On Sat, Apr 30, 2011 at 19:33, Zach . <span dir="ltr"><<a href="mailto:organic_unity@yahoo.com" target="_blank">organic_unity@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<table border="0" cellpadding="0" cellspacing="0"><tbody><tr><td style="font: inherit;" valign="top">vaction? where? I wanna go :)<br>
<br>
thanks for the introduction brian. Ive fixed a few LCDs at NB and
while Im definitely not an expert at it I feel like I do have the hang
of it and could probably point you in the right direction. For
starters, the cap in the far bottom left looks bad. <br>
<br>
Bring it by on Monday and I can probably take a look at it. I might even be
over there tonight. I don't offer free repairs but I like to teach and
impart what I've learned. So if you want to learn how to fix I'd be
glad to help.<br>
best,<br>
zach<br><br>--- On <b>Sun, 5/1/11, Brian Morris <i><<a href="mailto:cymraegish@gmail.com" target="_blank">cymraegish@gmail.com</a>></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;">
<br>From: Brian Morris <<a href="mailto:cymraegish@gmail.com" target="_blank">cymraegish@gmail.com</a>><br>Subject: Re: [Noisebridge-discuss] how does one debug an lcd screen?<br>To: <a href="mailto:noisebridge-discuss@lists.noisebridge.net" target="_blank">noisebridge-discuss@lists.noisebridge.net</a><br>
Date: Sunday, May 1, 2011, 1:11 AM<div><div></div><div><br><br><div>Zach is the monitor wizard who fixed a bunch of them recently.<br>I think he is away on vacation, but you could ask him for help.<br><br>Brian<br>
<br><br><div>On Sat, Apr 30, 2011 at 2:49 PM, Mike Schachter <span dir="ltr"><<a rel="nofollow" href="http://mc/compose?to=mike@mindmech.com" target="_blank">mike@mindmech.com</a>></span> wrote:<br>
<blockquote style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">I'm working under the assumption that the power supply<br>
is busted, so I took the thing apart and pulled out the<br>
board where the power plug goes. This is what it looks<br>
like:<br>
<br>
<a rel="nofollow" href="http://imgur.com/a/pbpea#2spwh" target="_blank">http://imgur.com/a/pbpea#2spwh</a><br>
<br>
I'm not quite sure how to proceed. There's a bunch of<br>
capacitors everywhere. To my inexperienced eye, nothing<br>
looks all that exploded... Should I just take a voltmeter<br>
and measure the resistance of each end of the capacitors?<br>
<br>
If one of the capacitors was messed up, would the resistance<br>
be infinite? I'm kind of at a loss because none of this involves<br>
probability distributions, calculus or computing derivatives. The<br>
board doesn't have any equations on it!?! Maybe I could bring<br>
it into circuit hacking Monday?<br>
<font color="#888888"><br>
mike<br>
</font><div><div></div><div><br>
<br>
On Fri, Apr 29, 2011 at 8:53 PM, Mike Schachter <<a rel="nofollow" href="http://mc/compose?to=mike@mindmech.com" target="_blank">mike@mindmech.com</a>> wrote:<br>
> Hi there,<br>
><br>
> So, I'm not the most knowledgeable person on earth when<br>
> it comes to electronics... I took an electronics class once,<br>
> and passed it...<br>
><br>
> I have an LCD screen, a Westinghouse. Kind of like a TV<br>
> or something. From years ago. It failed on me - it sorta<br>
> powers on, but nothing shows up on the monitor.<br>
><br>
> Sometimes the ON light just flashes, gradually fading softly<br>
> into the quiet night. It makes me kind of sad. Sometimes I<br>
> wonder if I can bury it in an LCD screen cemetery; would it<br>
> come back to life, only to eviscerate it's hapless owner? My<br>
> final screams should rightfully go unanswered, having toyed<br>
> with things that unknowing humans should not. I'd like to<br>
> avoid that. At least for now.<br>
><br>
> So... does anyone know how to debug problems with LCD screens?<br>
><br>
> mike<br>
><br>
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