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MODEL: TH-42PZ70BA
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FAULT: 6 or 7 blinks from LED
Does not proceed - no picture or sound
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DIAGNOSIS: Test with Y sustain (SC board) unplugged; control and power
If this passes, check MOSFETs on the Y sustain for short, the SMD
ones most commonly fail.
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FIX: Replace the FET
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MODEL: TH-46PZ80B (also most of: TH-42PZ8*, TH-50PZ8*)
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FAULT: Picture is present but half of image intermittently disappears or
image is unstable on one or both halves. Colours may also be wrong.
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DIAGNOSIS: Fiddle with LVDS cable. This runs from the main board (A board)
to the control board (D board.)
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FIX: Secure the cable with tape on both ends.
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MODEL: TH-42PZ8B (also TH-42PZ81B, many others)
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FAULT: 2 or 10 blinks from LED
Does not proceed - no picture or sound
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DIAGNOSIS: Freeze-spray SMD ceramic capacitors on MC301 and MC302 on P board.
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FIX: Replace such capacitors near the TEA-chip as they commonly fail.
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MODEL: TX-26LXD80 + many other Panasonic using 26" Chi-Mei panel
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FAULT: No picture or distorted image on power up
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DIAGNOSIS: Twist TV frame slightly and gently. If picture comes back, suspect
the tab bonds.
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FIX: Apply additional pressure to tab bonds using shim material.
Many videos on YouTube describing the process...
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