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Check all high voltage caps with Mfs less than 10 . For example a 160 volt 2.2 cap or 200 volt 1 Mf or 250 volt at 4.7Mf etc. Always substittute with a higher dgree cap. Like an 85 degree cap to a 105 cap! And be sure you always have good solid grounds on anything with heat sinks, transistors. mosfets,vertical,powerline regs etc. Thanks for asking!
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Did you replace cap 2465, 100volt 10Mf to cure the vertical problem? and You may still have a bad cap at location 2415, 160 or 200volt 2.2 at 85 degrees. Check this out! When the tv tries to come on does it make a very good effort with the picture tube cracklin on and then shuts down? If this is true you may need a mosfet, located at 7404. Part# 934054713215. Good Luck! This is a smd!
It sounds like your tuner mode has been changed. To change this back to cable hit menu arrow down to install, then arrow down to tuner mode and change that to cable. That should take care of your problem, if not email me at [email protected]
Usually, the L01-1 chassis most common problem = weak
capacitors, such as C2455.Could be C2425......47mf/25v...
Check all caps around horiz drive xformer = an ESR meter
helps on this one + a skilled, experienced technician......T.