Dicas Reparação
Modelo - Chassis KV36FS12
Pesquisa: KV36FS12 Enviar Dica Resolvida
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV36FS12 AA-2 | NoiseY video | This television had sever noise resembling black & white random lines of varying lengths. No discernable picture. Noise is in the tuner and video and modes. | Checking the video at the input of the comb filter IC3504(2) on the rear I/O circuit board. The video is perfect. However the Luminance out IC3504(9)is broken into pseudo square waves that are random in size and shapes. This indicated the Combfilter was not working. Further checking discovered the FSC IC3504(37), which is a 3.58mhz carrier was reduced to a 60hx pulses. At CN271(15) we found the FSC signal normal. Problem was an open trace between the connector CN274(15) and C3578 located inside the combfilter shield located at coordinates C2 on the UY board. | Muller |