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RCA R52WH74 no sound    
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Joined: 18 Jul 2011
Posts: 1
Location: houston tx USA

PostPosted: Mon Jul 18, 2011 1:02 pm    Post subject: RCA R52WH74 no sound Reply with quote

Hi, first post.
I have a RCA R52WH74 52" flatscreen rear projector TV with no sound. I probed all the inputs on the TEA6422 matrix switch and there is only one input (intermittent; I got a signal once there but never again) and I think there should be at least 2; I have a wii plugged into the front inputs. despite what inputs I get to the matrix switch, there is never an output. There is no sound on the inputs to the MSP4440G C12 sound processor on pins 50 or 52 (ANA_IN1+ & ANA_IN2+) and no ouptus on pins 20 & 21 (DACM_L & DACM_R). Is there an IC somewhere downstream of these 2 ICs that could be blocking the signal?

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