Question about Toshiba 36HFX72 36" TV
First make sure the set is off, and unplug it. open the back and pull out the main board (you may have to disconnect some connectors, make sure you remember where they go, perhaps mark them with color markers) Look for bad solder joints in the power supply (where power comes into the set). There is a group of 4 diodes some cap's and resistors and a small box (the relay) it not necessary but a good idea to unsolder with some solderwick then resolder all those leades. If there is bad solder there most likely it's in other sections as well so look all around and "touch up" areas such as both horizontal and vertical. I suggest using a 25 to 35 watt soldering iron with a "medium" flat tip. I do not like soldering "guns" they get too hot. Also there is a larg transformer with a wire going to the CRT (picture tube) Do not attempt to disconnect it, this is the high voltage anode, disconnecting should be left only to a pro, the CRT can hold up to a 30K HV charge even when the set is not plugged in. Hope this helps!
Posted on Aug 14, 2007
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