This problem stems from defective surface mount capacitors on the "hyper module" (which is no longer available as a part). The capacitors can be replaced by a technican with good soldering skills however and is accompolished by using 105 degree type PC style or 10 uF/16 volt SMD caps. All 11 of them must be changed for a lasting repair. They are at locations: CX 178,221,230,241,250,261,270,514,541,670 and C5030.
Sound like bad tuner,or tuner circuitry.Instead of spending money,why don't you bypass the problem??
Use a / v outputs from source box to a /v inputs on tv
let me know by rating if you need more help....T.
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