Question about Sony KP-61HS10 61" Rear Projection Television
I have the Same 5 blinks with sound but without picture. I was hoping one of the other posters with the same problem could tell me about their experience,,,,, What finally happened ? What was wrong? How much was the fix? How long did it take to get your set back? I hope all is well and that you check back for a follow up reply. Thanks so much.
· 5 times, Diagnosis: White balance failure (Not balanced) Possible causes: Video out (IC7101, 7201, 7301) is faulty (CR, CG, CB board), CRT drive (IC309) is faulty (A board), G2 is improperly adjusted. Symptoms of the problem: No raster is generated, CRT cathode current detection reference pulse output is small.
AKB is a color balance circuit. It stands for Automatic Kathode Balance
and is used in the video circuitry to keep the white balance in the
proper level when dosed with color signals that tend to saturate the
video level.
It is part of the "jungle IC" in Sony sets and is very important to the overall function of the color processing system.
The repair probably requires some surgery on the jungle chip if not its
replacement. Cost of repair could be anywhere from a few dollars to
$200 for the new chip.
It will require a service tech with good experience to know about this
function, which is quite esoteric in tv engineering principles.
The only suggestion I have before you call in a tech is to do the hard
reset (unplug for at least 4 hours) and the vibration check for loose
connections or cold solder joints (by whacking the set with your hand
or fist with enough force to vibrate the connections inside for
bringing them back to life).
Posted on Dec 20, 2007
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very much appreciated !
First Sony tech tried and failed ...he was out 3 times.
I saw him try a power converter...but that wasn't it.
maybe this information will help the next not so savvy technician.
Very much appreciated!
I've had a SONY tech out 3 times and he still didn't fix it...
but still charged me ..go figure.
Nearly 300. for nothing. Well I did see him try a power something or other may a converter or conditioner.
Maybe this info will help the next not so savvy technitian.
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