Question about Sony KP-51HW40 51" Rear Projection Television

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5 flashing light code,unplug CR board,now 8 flashing light code

Sony KP-51hw40 - Has 5 flashing light code and tv shuts down after blue and green tubes light up and red doesn't. Was told by Ladywinn to unplug red tube CRT board and see if the tv stays on. I hope that is the CR board at the bottom of the yoke and V-board assembly. I unplugged the CR board ,the tv shuts off and get 8 flashing light code now,which is audio I think.

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If you put the "CR" board back on, the error code will once again be 5 blinks. Your problem is likely the TV's IK blanking circuit. The Kine driver ICs on the CRT sockets boards CR, CB, and CG need replacement along with a few components in the 200 volt supply to the circuit.

Posted on Feb 13, 2009

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