All left and right refers to looking from rear of TV (or looking from front with TV upside down)

• TV came with vertical bars and no image. Found faulty TVS on left buffer board. Also replaced T-Con (may have damaged the original while hot air removing components, board has slight warp) and have full image but few horizontal lines on the screen. Some of the lines appears to be 2 pixel tall while others are 1 pixel tall.
• Disconnecting left and right buffer board potentially reveals problems on both sides with different signals (unless this T-Con require jumper like Samsung FB_TRDY1&3) Fault

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Failure Symptom



No picture, just red vertical stripes. Google search shows quite common problem for these recent Vizio M series although red vertical stripe pattern may differ. Some call it "Netflix" boot screen haha.

Where is the short?

Panel has 4x buffer boards. Quickly found the 1/4 panel buffer board with the problem by selectively disconnecting buffer board flex cables.



Having recently fixed another Vizio with similar symptoms that was a shorted ESD diode array ( link ) Probed the ESD diode array but...

I have a Sony 75x940e that I just fixed with the help of the forum (bad emmc). For the last couple of months I was noticing some burn in of the android home icons on dark backgrounds (photo is attached). I always thought VA panels were immune to burn ins. Is there anything I can do to fix it? Could it be because of a failing component other than the panel itself?...

• Prior owner tried a replacement main board. No difference.
• Samsung 2x red blinking standby LED = panel fault
• Jumpered FB_TRDY_1 (pin 1 CN1300 left. main tcon->left side buffer boards) and FB_TRDY_3 (pin 95 CN1301 right. main tcon->right side buffer boards) This allows testing individual T-Con (on main board) connection to panel on this Samsung. Found fault on left side (viewing from rear of TV)
• Each side has 2 buffer boards, disconnected left side flex between 2 buffer boards. Fault is on the left most board.
• Tape masking eventually isolated to CN1300 pin 15 (CKV4_GOA) Display

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I will just preface all this by saying that I have a fairly technical background but have never attempted SMD electronics diagnostics and repair before, I really like the idea and want to learn.

I have a MacBook Pro late 2016 that died maybe four years ago. Over the course of 30 seconds, it got slower and stuttered, until it froze for a second and died. No click from the trackpad anymore, nothing. I started getting interested in electronics repair and decided to give it a shot, so I opened it, removed the battery (one cell was puffy), took out the motherboard and experimented with...