Question about Mitsubishi WS-55807 TV

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1993 Mitsubishi 35" Tube - no color on any input > only on menu

Our 1993 35" Mits tube worked very well for several years then was stored for about 5 years; after storage the picture was very good and it worked for several more years. Eventually it developed a daughter board - circuit board solder connection failure on surface mounted caps. The tech that came out was moonlighting (oh how I wish I could find another moonlighter now) and told us the colors were starting to run a little but for the age it was a nice picture. To us, since we use this in the den about 6 hours a week, the picture was still great.

About a year later or 5 years ago (yes we've been watching things in black / white for several years - it helps keep the wife & kids busy elsewhere) we lost the color on the set on all inputs including Coax, S-Video and RCA. The colors show up when in the menu mode and seem to be there in terms of capablity because when the tint / colors are adjusted you can see red/green/blue outlines or color noise in the background of the images.

We're looking for a tech who can fix this set and another one (afterhours for cash - in the Lansing, Michigan area) or someone nice enough to help locate the area of the TV I can look for circuit board solder issues and/or failed components. I have a few years electronic / TV repair experience from my college era, granted it was several years ago, I'm still good with a solder iron and fluke meter. Please help me determine know where to look and what to look for! Would this be failed cap(s) or an IC chip issue or diodes or solder connections? Does the set need any mods?

And I want to thank you for your contribution to corporate decline, over inflated everything. Welcome to the era of DIY - not because we want to, because we have to in order to survive!

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  • Master
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Good Day, lhcsmi; That year model of your TV it will be the PIP MODULE; PULL PIP PCB FROM SET, JUMP OUT 'VP' CONNECTOR WITH 1UF CAP FROM PIN 7 TO PIN 9 AND 1UF CAP FROM PIN 11 TO PIN 5.CHECK ALL ELECTROLYTIC CAPS AND TRACES CONNECTING TO THESE CAPS FOR CONTINUITY. The board is about 3x5, it's in the towards the back of TV's chassis in the middle of chassis. The caps are best to install on the bottom of the main "mother board", the board is numbered. Do not re-install board. You will correct problem but will loose the PIP function. I can't help with side tech from here in TX, but there is many good tech's in the Capitol, of MI, moved 25 yrs ago from that area. I hope this was helpful. Good Luck, big IRISH.

Posted on Jul 29, 2008

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  • Mitsubishi Master
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Here is a list of qualified tv repair in your area:
Lansing Televisions Service & Repair in Lansing MI

Posted on Jul 29, 2008

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this model is famous for fluid leaks. each projector True True (``````````` (``````````` 0 95250 95250 tube has a reservoir on the front of it with a fluid in it. this keeps the face of the tube cool.
this depends on how bad the damage is in the tv. in most cases we can reseal the tube and clean up the fluid 400-600.
Once you
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We remove the CRT, clean it all up, add a very small amount of RTV sealer to
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Mits says replace the CRT...too costly.

You msut check the yokes carefully as well. If any coolant gets into them
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other wise this is common problem too.

Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://www.hdtvoice.com/voice/showthread.php?t=28929
Or send to ptscorp.com
http://www.hdtvoice.com/voice/index.php?s=

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