Olympus-OM
[Top] [All Lists]

Re: [OM] OT - How I spent my time yesterday.

Subject: Re: [OM] OT - How I spent my time yesterday.
From: John Hermanson <omtech1@xxxxxxxxxxx>
Date: Fri, 14 Nov 2008 12:01:12 -0500
YES!  Another job well done!
___________________________________
John Hermanson  |   CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121  |  www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html


Moose wrote:
> Here's some snaps of yesterday's project. 
> <http://galleries.moosemystic.net/MooseFoto/index.php?gallery=Tech/Mitsubishi>
> 
> I've had a large screen projection TV, 55" Mitsubishi, for something 
> like 10 years.
> 
> Quite a few weeks ago (too many to freely admit to), it started acting 
> up. the picture would turn into something like a sideways hourglass, 
> pinched in at the middle and going off the screen in the corners. And 
> each color would do it differently, giving a nice, psychedelic effect. 
> The amount of the effect would vary.
> 
> At first, it would go away as the TV warmed up. Out of sight, out of 
> mind, right? But it slowly got worse.
> 
> So I got on the web and started nosing around. There's this nice repair 
> pro on a forum who shares his knowledge for us DIYers. turns out this is 
> a common problem with older Mitsubishis. The Convergence ICs start 
> failing. I find out which ICs of which brands are the best replacements 
> and a seller in Canada with reasonable prices.
> 
> In the mean time, I know know where they are and how huge and exposed 
> their heat sink is. So I put a small fan inside, directed at the heat 
> sink. Voila! Turn on the fan and within a few seconds, the picture corrects.
> 
> The ICs and thermal compound arrive, but it looks like some job to 
> replace them - and things are working fine with the fan ...
> 
> Weeks pass, we switch from cable to Dish satellite service; we fall in 
> love with the HD picture and fabulous DVR*. Then the picture starts 
> acting up again. Oh-oh! I've known, but been ignoring, the danger that 
> complete failure of an IC an take some pico fuses, soldered to a board, 
> with it, meaning more work to repair.
> 
> So yesterday, I finally got out my round toit and took the plunge. 
> Actual time to replace the ICs, maybe 45 min., and I could do it again 
> in 30 or less. Total time to work out the details, get the chassis out, 
> take snaps of cable connections so I would get them back right, 
> manhandle the chassis out and in and clean up? Close to five hours. Of 
> course if I were to do it again, it'd be half that or less, but I like 
> to go nice and slow and careful first time around. All I need is to 
> break one of the picture tubes.
> 
> The outcome was worth it! Picture all well again. :-)
> 
> Couch Potato Moose
> 
> * The VIP722 DVR is the reason to choose Dish over DirectTV or cable.
-- 
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/

<Prev in Thread] Current Thread [Next in Thread>
Sponsored by Tako
Impressum | Datenschutz