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.
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.
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My sony 65Ws500 model about 4 months ago it started turning the screen all blue as soon as I turned it on. it stayed blue for about an hour then come back on normal now when I turn it on it will shut down and I get a small red light flashing 8 time then pauses and does it again 8 time then pauses then again and so on. I took back panel off. I turn on tv The blue bulb gets very bright and the green and red projection bulb goes out and now it shuts off. and the blinking starts it a code flashing but don't know the code to find out whats wrong. would someone help if u can been wife and I laid off from work 3 months now cant afford tech prices on our employment. wife and I has 2 little girls to raise. along with the rest of u parent out there and one getting employment cant offord repairs. Thank U. Adams01220@yahoo.com
I hate to be the bearer of bad news, but you have a shorted red picture tube.It is not at all uncommon on sony rear projection. The gun shorts and the set identifies the problem and goes into shutdown. Usually there are diagonal lines in the picture before it shuts down. this is an unfortunate problem because this set delivers a great picture. The dealer cost of the tube is around $200. When the repair is complete your're probably looking at $400-$600.
The only problem is that the green tube and the blue tube also have chance of having the same problem. It'a tough call . But from my experience , I have replaced the green tube and
had the blue tube goe within a year. Scrivitron