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MODEL: 26LC55 + many other LG 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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MODEL: 37LC46, 37LC55, 42LC46, 42LC55
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FAULT: Stuck in standby
No power LED
Powers on after many minutes of waiting
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DIAGNOSIS: Locate failed capacitors (2200uF 10V)
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FIX: Replace all four failed 2200uF 10V caps - I used Rubycon YXF
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MODEL: 37LC2D (May work for other -2D models)
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FAULT: No sound. Remote control or side buttons not functional.
Freeview/DVB-T (if available) and HDMI do not work
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DIAGNOSIS: 3.4V converter should be outputting around 3.3 - 3.4V from PSU
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FIX: Replace failed 1000uF 16V cap
If that fails, replace PSU or use external DC-DC to provide 3.3V
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MODEL: 37LC2D (May work for other -2D models)
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FAULT: Remote control does not work
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DIAGNOSIS: Check if side buttons and HDMI/DVB-T work
If these DO NOT work see above fix; otherwise use this fix
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FIX: Clean "REMOTE IN" and "REMOTE OUT" jacks on rear of set
Use 3.5mm jack to add contact cleaner to the contacts of the jacks
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MODEL: 42PC1D
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FAULT: Repeated clicking on/off, flashing/flickering screen
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DIAGNOSIS: Check caps
Check AC detect line is stable 5V
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FIX: Often the 3300uF 10V caps will fail - used Chemicon KZE to replace
In addition to this, if AC detect is not stable, bridge optos
for the AC detect. This will not mute sound on power failure,
but everything else will still work fine.
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MODEL: 42PX5D
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FAULT: Dim/purple tinted screen, slow/blurry/ghosted movement
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DIAGNOSIS: None
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FIX: Clean Y sus and Z sus - fan for Y sus sucks in a lot of dirt and
causes a problem with the Y sus
Check fuse on Z sus, if failed replace fuse and IPM
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MODEL: PDP 42v5/42v6 CHASSIS (used in a lot of TVs)
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FAULT: Dim/purple tinted screen, slow/blurry/ghosted movement
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DIAGNOSIS: None
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FIX: Check Vs fuse on Z sus, if failed replace fuse and IPM
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