Question about Pioneer SD-P50A5-K 50" Rear Projection Television

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SD-P5191 Pioneer control inputs lock after startup

Unit will start and if you immediatly change channel, mute, etc. it will take one input and no more. A string of random characters stay all across the bottom screen where the volume level display should be shown. I would like to locate a schematic or any other help. Thanks

Posted by Anonymous on

  • Anonymous May 06, 2007

    On further examination it turned out only the volume up or down would cause the unit to lock out any further control inputs. I did a temporary fix by jumpering the the speakers with high wattage resistors and using a seperate stereo driven from the audio output jacks. I would still like a proper fix. I suspect a faulty IC but cant find a schematic to trace it.

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Pioneer say Main CPU bad. Replace and install capacitors, diodes and shield plate. See SI Bulletins for more info.(SI-a48032-G)

Posted on Aug 16, 2007

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I can't switch channels

Consult the owner manual (you can GOOGLE to find one with the model number if you do not have it) to see if the set has a feature to lock out channel being changed---this feature is on some sets so if using a box children etc cannot change the channel.

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I'm not sure which screen you need so both are listed below:

part number Description Cost
AMR2835 Lenticular Sheet $306.95
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