I have a SONY Trinitron (32XBR400). Same problem - blank screen, good sound and able to change channel. Repairman came by to take a look at problem - he "revuvenated" the TV - claiming weak CRT (repairman stated to me he has seen this same [problem on a number of SONY Trinitron's). Bottom line - the picture tube is gone and needs to be replaced ... need to buy a new TV. BTW - I called SONY Customer Service - not worth the phone call - were of no help whatsoever.

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