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I have a Magnavox 42MF337b tv. When I went to power it on last night the fuse blew. I replaced the fuse today and it blew again. Can someone please tell me how to start troubleshooting the problem?
 

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Thank you, Ron. I saw that post thread/trail, and the first post said that visually, the TO-247 MOSFET Q901 was bad. I visually checked both boards, and did not see anything unusual. Reading the subsequent responses, it seemed like capacitors were checked and okay, but the zener diodes were bad. I did not readily see where there was a process for checking the parts. I have a multimeter, but no other equipment. Would like to troubleshoot myself. Not sure if I can check the parts on the board, but would like that to be the first step. I thought I saw another post that had a process for checking the MOSFETs, but could not find it again.
 
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