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Easy way to Diagnose is get a known good CCFL from a laptop or LCD TV
and start plugging it in to the existing Cathode's Ports one at a time.
Generally its a bad CCFL on these multiple units.. (2,4,6) Bulbs..
Moniserv.com for replacements.
I have not been able to find the 3mm x 711mm backlight(ccfl's) anywhere on the net. That is the size of the ccfl's in the backlight assembly. There are 16 individual bulbs and I suppose if one goes out they all will not come on. IMO, I will never buy a Sanyo again. The tv was less than two years old with minimal hours on it.
Easy way to Diagnose is get a known good CCFL from a laptop or LCD TV and start plugging it in to the existing Cathode's Ports one at a time. Generally its a bad CCFL on these multiple units.. (2,4,6) Bulbs.. Moniserv.com for replacements.
I have this tv as well with the same problem. From the research I've done, one of the 16 ccfl's(backlight bulbs) goes bad and they all will not come on then. I have not been able to find a replacement ccfl for this particular tv. The ccfl size if 3mm x 711mm. I have a feeling the scope of this problem is very large with this particular tv and this forum represents the tip of the iceberg. Sanyo unfortunately makes a piece of junk and we have that piece of junk sitting in our homes with no good solution other than to say, dont waste your money on another Sanyo tv.