Question about LG Televison & Video
Ahoy there...Your case would appear to be the classic dying cold cathode tube(s) . After a long service the tubes will grow a carbon track down the tube and it won't take much length to cause an increase in current from high voltage unit . This current is detected and unit shuts down . They can be sourced and replaced , I have seen them from American sources for approx. $30 for 10 40 inch .
HOWEVER I have also watched an LED conversion on youtube which may be a smarter choice as the rest of the tubes will meet that fate sometime . It is a picky , tedious dangerous(to your screen not you so much) process .
If you are mechanically adept and don't use force on the flat wires(there should be ZIF sockets or a stiffened handle , be careful)
you stand as good chance . You need a good sized work space though .
Posted on Aug 11, 2016
SOURCE: Hitachi 50ux58b
If you have Hitachi model number 50UX58B, 60UX58B, 50UX58K, 60UX58K, 50SBX78B or 60SBX78B and you have the following symptoms you may want to grab a repair kit from www.TvRepairKits.com. They have put together a kit that includes the parts and instructions to fix these models. This is a fairly common problem with the above model numbers. It is typically caused by a blown capacitor and pico fuse. Again, you can get a kit from the above address.
Here are the symptoms...
Primary Symptom: No Audio or Video. Power light will come on briefly then shut off.
Other Possible Symptoms : The green LEDs on the circuit board light up for a few seconds then turn off.
Hope this helps,
Posted on Nov 07, 2008
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