Question about Televison & Video
Hi William, I've had this great TV for 6 years now and its been excellent. Its just started to have problems with the video input side of the TV and sometimes there will be no picture, sometimes the picture is scrolling from left to right whilst rolling as well. If I let it cool down for 10 mins and switch it on then it works fine for a period of time (Which is random) then something starts to break down again. I've ordered a 60" LG plasma to replace it but if possible I would like to repair it and donate it to my local primary school for their useage. I've contacted you as you look to be the right guy for sorting these out, but maybe a little to far away for a site visit.
Tony Powell, Wales in the UK
I have a toshiba 50wt29b rear projection tv,one day it just lost the picture when i was watching it the sound is fine but no picture or any type of light coming out of the bulbs,any one got any ideas?
Posted on May 22, 2011
From what you're describing it sounds like ring-cracked solder joints or maybe a couple of failed caps. What's the model number???
Ring cracks happen because a component on the board gets hot and cools many thousands of times over the life of the Tv and the extreme heat causes the solder to crystal and break leaving the smallest of rings around where the coponent would otherwise firmly be soldered, breaking contact with the board. The other possibility is one or more electrolytic capacitors measure high equivilent series resistance and take more time (thus heat) to reach an operating temp sufficient to dissipate voltage at a correct rate.
Drop me a post and let me know what the model number is and I can look it up for common problems in the schematics and service manual.
BTW: Uk is a bit beyond my normal servicing route... :)
William Rayburn, CET
PO Box 442
Long Beach, WA. 98631
Posted on Nov 10, 2008
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Posted on Jan 02, 2017
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